2007-10-10 19:16:19 +04:00
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/*
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* Kernel-based Virtual Machine driver for Linux
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*
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* derived from drivers/kvm/kvm_main.c
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*
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* Copyright (C) 2006 Qumranet, Inc.
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2008-07-28 20:26:26 +04:00
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* Copyright (C) 2008 Qumranet, Inc.
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* Copyright IBM Corporation, 2008
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2010-05-23 19:37:00 +04:00
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* Copyright 2010 Red Hat, Inc. and/or its affilates.
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2007-10-10 19:16:19 +04:00
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*
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* Authors:
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* Avi Kivity <avi@qumranet.com>
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* Yaniv Kamay <yaniv@qumranet.com>
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2008-07-28 20:26:26 +04:00
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* Amit Shah <amit.shah@qumranet.com>
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* Ben-Ami Yassour <benami@il.ibm.com>
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2007-10-10 19:16:19 +04:00
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See
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* the COPYING file in the top-level directory.
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*
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*/
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2007-12-16 12:02:48 +03:00
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#include <linux/kvm_host.h>
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KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
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#include "irq.h"
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2007-12-14 04:35:10 +03:00
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#include "mmu.h"
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2008-01-28 00:10:22 +03:00
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#include "i8254.h"
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2008-03-25 00:14:53 +03:00
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#include "tss.h"
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2008-06-27 21:58:02 +04:00
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#include "kvm_cache_regs.h"
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2008-07-03 15:59:22 +04:00
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#include "x86.h"
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KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
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2008-02-15 22:52:47 +03:00
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#include <linux/clocksource.h>
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2008-07-28 20:26:26 +04:00
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#include <linux/interrupt.h>
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KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
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#include <linux/kvm.h>
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#include <linux/fs.h>
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#include <linux/vmalloc.h>
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2007-10-29 18:08:51 +03:00
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#include <linux/module.h>
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2007-11-20 11:25:04 +03:00
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#include <linux/mman.h>
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2007-12-12 18:46:12 +03:00
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#include <linux/highmem.h>
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2008-12-03 16:43:34 +03:00
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#include <linux/iommu.h>
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2008-09-14 04:48:28 +04:00
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#include <linux/intel-iommu.h>
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2009-02-04 19:52:04 +03:00
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#include <linux/cpufreq.h>
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2009-09-07 12:12:18 +04:00
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#include <linux/user-return-notifier.h>
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2009-12-23 19:35:23 +03:00
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#include <linux/srcu.h>
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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 11:04:11 +03:00
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#include <linux/slab.h>
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2010-04-19 09:32:45 +04:00
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#include <linux/perf_event.h>
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2010-06-02 13:06:03 +04:00
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#include <linux/uaccess.h>
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2009-07-01 17:01:02 +04:00
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#include <trace/events/kvm.h>
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2010-03-10 14:00:43 +03:00
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2009-06-17 16:22:14 +04:00
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#define CREATE_TRACE_POINTS
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#include "trace.h"
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2007-10-10 19:16:19 +04:00
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2009-09-09 21:22:48 +04:00
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#include <asm/debugreg.h>
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2007-11-14 15:08:51 +03:00
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#include <asm/msr.h>
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2008-02-20 18:57:21 +03:00
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#include <asm/desc.h>
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2008-10-09 12:01:54 +04:00
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#include <asm/mtrr.h>
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2009-05-11 12:48:15 +04:00
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#include <asm/mce.h>
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2010-05-17 13:08:27 +04:00
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#include <asm/i387.h>
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2010-05-17 13:08:28 +04:00
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#include <asm/xcr.h>
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2007-10-10 19:16:19 +04:00
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KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
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#define MAX_IO_MSRS 256
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KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
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#define CR0_RESERVED_BITS \
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(~(unsigned long)(X86_CR0_PE | X86_CR0_MP | X86_CR0_EM | X86_CR0_TS \
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| X86_CR0_ET | X86_CR0_NE | X86_CR0_WP | X86_CR0_AM \
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| X86_CR0_NW | X86_CR0_CD | X86_CR0_PG))
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#define CR4_RESERVED_BITS \
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(~(unsigned long)(X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | X86_CR4_DE\
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| X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \
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| X86_CR4_PGE | X86_CR4_PCE | X86_CR4_OSFXSR \
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2010-06-10 07:27:12 +04:00
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| X86_CR4_OSXSAVE \
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KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
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| X86_CR4_OSXMMEXCPT | X86_CR4_VMXE))
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#define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR)
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2009-05-11 12:48:15 +04:00
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#define KVM_MAX_MCE_BANKS 32
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#define KVM_MCE_CAP_SUPPORTED MCG_CTL_P
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2008-01-31 16:57:38 +03:00
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/* EFER defaults:
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* - enable syscall per default because its emulated by KVM
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* - enable LME and LMA per default on 64 bit KVM
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*/
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#ifdef CONFIG_X86_64
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static u64 __read_mostly efer_reserved_bits = 0xfffffffffffffafeULL;
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#else
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static u64 __read_mostly efer_reserved_bits = 0xfffffffffffffffeULL;
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#endif
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KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
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2007-11-18 17:24:12 +03:00
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#define VM_STAT(x) offsetof(struct kvm, stat.x), KVM_STAT_VM
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#define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU
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2007-11-01 01:24:23 +03:00
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2009-08-09 16:17:40 +04:00
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static void update_cr8_intercept(struct kvm_vcpu *vcpu);
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2008-02-11 19:37:23 +03:00
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static int kvm_dev_ioctl_get_supported_cpuid(struct kvm_cpuid2 *cpuid,
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struct kvm_cpuid_entry2 __user *entries);
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2007-11-14 15:09:30 +03:00
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struct kvm_x86_ops *kvm_x86_ops;
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2008-06-27 21:58:02 +04:00
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EXPORT_SYMBOL_GPL(kvm_x86_ops);
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2007-11-14 15:09:30 +03:00
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2009-06-25 14:36:49 +04:00
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int ignore_msrs = 0;
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module_param_named(ignore_msrs, ignore_msrs, bool, S_IRUGO | S_IWUSR);
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2009-09-07 12:12:18 +04:00
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#define KVM_NR_SHARED_MSRS 16
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struct kvm_shared_msrs_global {
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int nr;
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2009-12-18 11:48:44 +03:00
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u32 msrs[KVM_NR_SHARED_MSRS];
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2009-09-07 12:12:18 +04:00
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};
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struct kvm_shared_msrs {
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struct user_return_notifier urn;
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bool registered;
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2009-12-18 11:48:44 +03:00
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struct kvm_shared_msr_values {
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u64 host;
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u64 curr;
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} values[KVM_NR_SHARED_MSRS];
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2009-09-07 12:12:18 +04:00
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};
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static struct kvm_shared_msrs_global __read_mostly shared_msrs_global;
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static DEFINE_PER_CPU(struct kvm_shared_msrs, shared_msrs);
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2007-11-01 01:24:23 +03:00
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struct kvm_stats_debugfs_item debugfs_entries[] = {
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2007-11-18 17:24:12 +03:00
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{ "pf_fixed", VCPU_STAT(pf_fixed) },
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{ "pf_guest", VCPU_STAT(pf_guest) },
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{ "tlb_flush", VCPU_STAT(tlb_flush) },
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{ "invlpg", VCPU_STAT(invlpg) },
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{ "exits", VCPU_STAT(exits) },
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{ "io_exits", VCPU_STAT(io_exits) },
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{ "mmio_exits", VCPU_STAT(mmio_exits) },
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{ "signal_exits", VCPU_STAT(signal_exits) },
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{ "irq_window", VCPU_STAT(irq_window_exits) },
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2008-05-15 14:23:25 +04:00
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{ "nmi_window", VCPU_STAT(nmi_window_exits) },
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2007-11-18 17:24:12 +03:00
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{ "halt_exits", VCPU_STAT(halt_exits) },
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{ "halt_wakeup", VCPU_STAT(halt_wakeup) },
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2008-02-20 22:30:30 +03:00
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{ "hypercalls", VCPU_STAT(hypercalls) },
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2007-11-18 17:24:12 +03:00
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{ "request_irq", VCPU_STAT(request_irq_exits) },
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{ "irq_exits", VCPU_STAT(irq_exits) },
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{ "host_state_reload", VCPU_STAT(host_state_reload) },
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{ "efer_reload", VCPU_STAT(efer_reload) },
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|
{ "fpu_reload", VCPU_STAT(fpu_reload) },
|
|
|
|
{ "insn_emulation", VCPU_STAT(insn_emulation) },
|
|
|
|
{ "insn_emulation_fail", VCPU_STAT(insn_emulation_fail) },
|
2008-09-01 16:57:51 +04:00
|
|
|
{ "irq_injections", VCPU_STAT(irq_injections) },
|
2008-09-26 11:30:55 +04:00
|
|
|
{ "nmi_injections", VCPU_STAT(nmi_injections) },
|
2007-11-18 17:37:07 +03:00
|
|
|
{ "mmu_shadow_zapped", VM_STAT(mmu_shadow_zapped) },
|
|
|
|
{ "mmu_pte_write", VM_STAT(mmu_pte_write) },
|
|
|
|
{ "mmu_pte_updated", VM_STAT(mmu_pte_updated) },
|
|
|
|
{ "mmu_pde_zapped", VM_STAT(mmu_pde_zapped) },
|
|
|
|
{ "mmu_flooded", VM_STAT(mmu_flooded) },
|
|
|
|
{ "mmu_recycled", VM_STAT(mmu_recycled) },
|
2007-12-18 20:47:18 +03:00
|
|
|
{ "mmu_cache_miss", VM_STAT(mmu_cache_miss) },
|
2008-09-23 20:18:39 +04:00
|
|
|
{ "mmu_unsync", VM_STAT(mmu_unsync) },
|
2007-11-21 00:01:14 +03:00
|
|
|
{ "remote_tlb_flush", VM_STAT(remote_tlb_flush) },
|
2008-02-23 17:44:30 +03:00
|
|
|
{ "largepages", VM_STAT(lpages) },
|
2007-11-01 01:24:23 +03:00
|
|
|
{ NULL }
|
|
|
|
};
|
|
|
|
|
2010-06-10 07:27:12 +04:00
|
|
|
u64 __read_mostly host_xcr0;
|
|
|
|
|
|
|
|
static inline u32 bit(int bitno)
|
|
|
|
{
|
|
|
|
return 1 << (bitno & 31);
|
|
|
|
}
|
|
|
|
|
2009-09-07 12:12:18 +04:00
|
|
|
static void kvm_on_user_return(struct user_return_notifier *urn)
|
|
|
|
{
|
|
|
|
unsigned slot;
|
|
|
|
struct kvm_shared_msrs *locals
|
|
|
|
= container_of(urn, struct kvm_shared_msrs, urn);
|
2009-12-18 11:48:44 +03:00
|
|
|
struct kvm_shared_msr_values *values;
|
2009-09-07 12:12:18 +04:00
|
|
|
|
|
|
|
for (slot = 0; slot < shared_msrs_global.nr; ++slot) {
|
2009-12-18 11:48:44 +03:00
|
|
|
values = &locals->values[slot];
|
|
|
|
if (values->host != values->curr) {
|
|
|
|
wrmsrl(shared_msrs_global.msrs[slot], values->host);
|
|
|
|
values->curr = values->host;
|
2009-09-07 12:12:18 +04:00
|
|
|
}
|
|
|
|
}
|
|
|
|
locals->registered = false;
|
|
|
|
user_return_notifier_unregister(urn);
|
|
|
|
}
|
|
|
|
|
2009-12-18 11:48:44 +03:00
|
|
|
static void shared_msr_update(unsigned slot, u32 msr)
|
2009-09-07 12:12:18 +04:00
|
|
|
{
|
2009-12-18 11:48:44 +03:00
|
|
|
struct kvm_shared_msrs *smsr;
|
2009-09-07 12:12:18 +04:00
|
|
|
u64 value;
|
|
|
|
|
2009-12-18 11:48:44 +03:00
|
|
|
smsr = &__get_cpu_var(shared_msrs);
|
|
|
|
/* only read, and nobody should modify it at this time,
|
|
|
|
* so don't need lock */
|
|
|
|
if (slot >= shared_msrs_global.nr) {
|
|
|
|
printk(KERN_ERR "kvm: invalid MSR slot!");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
rdmsrl_safe(msr, &value);
|
|
|
|
smsr->values[slot].host = value;
|
|
|
|
smsr->values[slot].curr = value;
|
|
|
|
}
|
|
|
|
|
|
|
|
void kvm_define_shared_msr(unsigned slot, u32 msr)
|
|
|
|
{
|
2009-09-07 12:12:18 +04:00
|
|
|
if (slot >= shared_msrs_global.nr)
|
|
|
|
shared_msrs_global.nr = slot + 1;
|
2009-12-18 11:48:44 +03:00
|
|
|
shared_msrs_global.msrs[slot] = msr;
|
|
|
|
/* we need ensured the shared_msr_global have been updated */
|
|
|
|
smp_wmb();
|
2009-09-07 12:12:18 +04:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(kvm_define_shared_msr);
|
|
|
|
|
|
|
|
static void kvm_shared_msr_cpu_online(void)
|
|
|
|
{
|
|
|
|
unsigned i;
|
|
|
|
|
|
|
|
for (i = 0; i < shared_msrs_global.nr; ++i)
|
2009-12-18 11:48:44 +03:00
|
|
|
shared_msr_update(i, shared_msrs_global.msrs[i]);
|
2009-09-07 12:12:18 +04:00
|
|
|
}
|
|
|
|
|
2009-12-02 13:28:47 +03:00
|
|
|
void kvm_set_shared_msr(unsigned slot, u64 value, u64 mask)
|
2009-09-07 12:12:18 +04:00
|
|
|
{
|
|
|
|
struct kvm_shared_msrs *smsr = &__get_cpu_var(shared_msrs);
|
|
|
|
|
2009-12-18 11:48:44 +03:00
|
|
|
if (((value ^ smsr->values[slot].curr) & mask) == 0)
|
2009-09-07 12:12:18 +04:00
|
|
|
return;
|
2009-12-18 11:48:44 +03:00
|
|
|
smsr->values[slot].curr = value;
|
|
|
|
wrmsrl(shared_msrs_global.msrs[slot], value);
|
2009-09-07 12:12:18 +04:00
|
|
|
if (!smsr->registered) {
|
|
|
|
smsr->urn.on_user_return = kvm_on_user_return;
|
|
|
|
user_return_notifier_register(&smsr->urn);
|
|
|
|
smsr->registered = true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(kvm_set_shared_msr);
|
|
|
|
|
2009-11-28 15:18:47 +03:00
|
|
|
static void drop_user_return_notifiers(void *ignore)
|
|
|
|
{
|
|
|
|
struct kvm_shared_msrs *smsr = &__get_cpu_var(shared_msrs);
|
|
|
|
|
|
|
|
if (smsr->registered)
|
|
|
|
kvm_on_user_return(&smsr->urn);
|
|
|
|
}
|
|
|
|
|
2007-10-29 18:09:10 +03:00
|
|
|
u64 kvm_get_apic_base(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
if (irqchip_in_kernel(vcpu->kvm))
|
2007-12-13 18:50:52 +03:00
|
|
|
return vcpu->arch.apic_base;
|
2007-10-29 18:09:10 +03:00
|
|
|
else
|
2007-12-13 18:50:52 +03:00
|
|
|
return vcpu->arch.apic_base;
|
2007-10-29 18:09:10 +03:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(kvm_get_apic_base);
|
|
|
|
|
|
|
|
void kvm_set_apic_base(struct kvm_vcpu *vcpu, u64 data)
|
|
|
|
{
|
|
|
|
/* TODO: reserve bits check */
|
|
|
|
if (irqchip_in_kernel(vcpu->kvm))
|
|
|
|
kvm_lapic_set_base(vcpu, data);
|
|
|
|
else
|
2007-12-13 18:50:52 +03:00
|
|
|
vcpu->arch.apic_base = data;
|
2007-10-29 18:09:10 +03:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(kvm_set_apic_base);
|
|
|
|
|
2009-11-19 18:54:07 +03:00
|
|
|
#define EXCPT_BENIGN 0
|
|
|
|
#define EXCPT_CONTRIBUTORY 1
|
|
|
|
#define EXCPT_PF 2
|
|
|
|
|
|
|
|
static int exception_class(int vector)
|
|
|
|
{
|
|
|
|
switch (vector) {
|
|
|
|
case PF_VECTOR:
|
|
|
|
return EXCPT_PF;
|
|
|
|
case DE_VECTOR:
|
|
|
|
case TS_VECTOR:
|
|
|
|
case NP_VECTOR:
|
|
|
|
case SS_VECTOR:
|
|
|
|
case GP_VECTOR:
|
|
|
|
return EXCPT_CONTRIBUTORY;
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return EXCPT_BENIGN;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void kvm_multiple_exception(struct kvm_vcpu *vcpu,
|
2010-04-22 14:33:13 +04:00
|
|
|
unsigned nr, bool has_error, u32 error_code,
|
|
|
|
bool reinject)
|
2009-11-19 18:54:07 +03:00
|
|
|
{
|
|
|
|
u32 prev_nr;
|
|
|
|
int class1, class2;
|
|
|
|
|
|
|
|
if (!vcpu->arch.exception.pending) {
|
|
|
|
queue:
|
|
|
|
vcpu->arch.exception.pending = true;
|
|
|
|
vcpu->arch.exception.has_error_code = has_error;
|
|
|
|
vcpu->arch.exception.nr = nr;
|
|
|
|
vcpu->arch.exception.error_code = error_code;
|
2010-05-05 18:04:41 +04:00
|
|
|
vcpu->arch.exception.reinject = reinject;
|
2009-11-19 18:54:07 +03:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* to check exception */
|
|
|
|
prev_nr = vcpu->arch.exception.nr;
|
|
|
|
if (prev_nr == DF_VECTOR) {
|
|
|
|
/* triple fault -> shutdown */
|
2010-05-10 13:34:53 +04:00
|
|
|
kvm_make_request(KVM_REQ_TRIPLE_FAULT, vcpu);
|
2009-11-19 18:54:07 +03:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
class1 = exception_class(prev_nr);
|
|
|
|
class2 = exception_class(nr);
|
|
|
|
if ((class1 == EXCPT_CONTRIBUTORY && class2 == EXCPT_CONTRIBUTORY)
|
|
|
|
|| (class1 == EXCPT_PF && class2 != EXCPT_BENIGN)) {
|
|
|
|
/* generate double fault per SDM Table 5-5 */
|
|
|
|
vcpu->arch.exception.pending = true;
|
|
|
|
vcpu->arch.exception.has_error_code = true;
|
|
|
|
vcpu->arch.exception.nr = DF_VECTOR;
|
|
|
|
vcpu->arch.exception.error_code = 0;
|
|
|
|
} else
|
|
|
|
/* replace previous exception with a new one in a hope
|
|
|
|
that instruction re-execution will regenerate lost
|
|
|
|
exception */
|
|
|
|
goto queue;
|
|
|
|
}
|
|
|
|
|
2007-11-25 14:41:11 +03:00
|
|
|
void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr)
|
|
|
|
{
|
2010-04-22 14:33:13 +04:00
|
|
|
kvm_multiple_exception(vcpu, nr, false, 0, false);
|
2007-11-25 14:41:11 +03:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(kvm_queue_exception);
|
|
|
|
|
2010-04-22 14:33:13 +04:00
|
|
|
void kvm_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr)
|
|
|
|
{
|
|
|
|
kvm_multiple_exception(vcpu, nr, false, 0, true);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(kvm_requeue_exception);
|
|
|
|
|
2007-11-25 15:04:58 +03:00
|
|
|
void kvm_inject_page_fault(struct kvm_vcpu *vcpu, unsigned long addr,
|
|
|
|
u32 error_code)
|
|
|
|
{
|
|
|
|
++vcpu->stat.pf_guest;
|
2007-12-13 18:50:52 +03:00
|
|
|
vcpu->arch.cr2 = addr;
|
2007-11-25 15:04:58 +03:00
|
|
|
kvm_queue_exception_e(vcpu, PF_VECTOR, error_code);
|
|
|
|
}
|
|
|
|
|
2008-05-15 05:52:48 +04:00
|
|
|
void kvm_inject_nmi(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
vcpu->arch.nmi_pending = 1;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(kvm_inject_nmi);
|
|
|
|
|
2007-11-25 14:41:11 +03:00
|
|
|
void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code)
|
|
|
|
{
|
2010-04-22 14:33:13 +04:00
|
|
|
kvm_multiple_exception(vcpu, nr, true, error_code, false);
|
2007-11-25 14:41:11 +03:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(kvm_queue_exception_e);
|
|
|
|
|
2010-04-22 14:33:13 +04:00
|
|
|
void kvm_requeue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code)
|
|
|
|
{
|
|
|
|
kvm_multiple_exception(vcpu, nr, true, error_code, true);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(kvm_requeue_exception_e);
|
|
|
|
|
2009-09-01 13:03:25 +04:00
|
|
|
/*
|
|
|
|
* Checks if cpl <= required_cpl; if true, return true. Otherwise queue
|
|
|
|
* a #GP and return false.
|
|
|
|
*/
|
|
|
|
bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl)
|
2007-11-25 14:41:11 +03:00
|
|
|
{
|
2009-09-01 13:03:25 +04:00
|
|
|
if (kvm_x86_ops->get_cpl(vcpu) <= required_cpl)
|
|
|
|
return true;
|
|
|
|
kvm_queue_exception_e(vcpu, GP_VECTOR, 0);
|
|
|
|
return false;
|
2007-11-25 14:41:11 +03:00
|
|
|
}
|
2009-09-01 13:03:25 +04:00
|
|
|
EXPORT_SYMBOL_GPL(kvm_require_cpl);
|
2007-11-25 14:41:11 +03:00
|
|
|
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
/*
|
|
|
|
* Load the pae pdptrs. Return true is they are all valid.
|
|
|
|
*/
|
|
|
|
int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3)
|
|
|
|
{
|
|
|
|
gfn_t pdpt_gfn = cr3 >> PAGE_SHIFT;
|
|
|
|
unsigned offset = ((cr3 & (PAGE_SIZE-1)) >> 5) << 2;
|
|
|
|
int i;
|
|
|
|
int ret;
|
2007-12-13 18:50:52 +03:00
|
|
|
u64 pdpte[ARRAY_SIZE(vcpu->arch.pdptrs)];
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
|
|
|
|
ret = kvm_read_guest_page(vcpu->kvm, pdpt_gfn, pdpte,
|
|
|
|
offset * sizeof(u64), sizeof(pdpte));
|
|
|
|
if (ret < 0) {
|
|
|
|
ret = 0;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(pdpte); ++i) {
|
2009-06-10 15:12:05 +04:00
|
|
|
if (is_present_gpte(pdpte[i]) &&
|
2009-03-31 19:03:45 +04:00
|
|
|
(pdpte[i] & vcpu->arch.mmu.rsvd_bits_mask[0][2])) {
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
ret = 0;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
ret = 1;
|
|
|
|
|
2007-12-13 18:50:52 +03:00
|
|
|
memcpy(vcpu->arch.pdptrs, pdpte, sizeof(vcpu->arch.pdptrs));
|
2009-05-31 23:58:47 +04:00
|
|
|
__set_bit(VCPU_EXREG_PDPTR,
|
|
|
|
(unsigned long *)&vcpu->arch.regs_avail);
|
|
|
|
__set_bit(VCPU_EXREG_PDPTR,
|
|
|
|
(unsigned long *)&vcpu->arch.regs_dirty);
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
out:
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
2008-02-07 15:47:43 +03:00
|
|
|
EXPORT_SYMBOL_GPL(load_pdptrs);
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
|
2007-11-21 03:57:59 +03:00
|
|
|
static bool pdptrs_changed(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
2007-12-13 18:50:52 +03:00
|
|
|
u64 pdpte[ARRAY_SIZE(vcpu->arch.pdptrs)];
|
2007-11-21 03:57:59 +03:00
|
|
|
bool changed = true;
|
|
|
|
int r;
|
|
|
|
|
|
|
|
if (is_long_mode(vcpu) || !is_pae(vcpu))
|
|
|
|
return false;
|
|
|
|
|
2009-05-31 23:58:47 +04:00
|
|
|
if (!test_bit(VCPU_EXREG_PDPTR,
|
|
|
|
(unsigned long *)&vcpu->arch.regs_avail))
|
|
|
|
return true;
|
|
|
|
|
2007-12-13 18:50:52 +03:00
|
|
|
r = kvm_read_guest(vcpu->kvm, vcpu->arch.cr3 & ~31u, pdpte, sizeof(pdpte));
|
2007-11-21 03:57:59 +03:00
|
|
|
if (r < 0)
|
|
|
|
goto out;
|
2007-12-13 18:50:52 +03:00
|
|
|
changed = memcmp(pdpte, vcpu->arch.pdptrs, sizeof(pdpte)) != 0;
|
2007-11-21 03:57:59 +03:00
|
|
|
out:
|
|
|
|
|
|
|
|
return changed;
|
|
|
|
}
|
|
|
|
|
2010-06-10 18:02:14 +04:00
|
|
|
int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0)
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
{
|
2010-05-12 12:40:42 +04:00
|
|
|
unsigned long old_cr0 = kvm_read_cr0(vcpu);
|
|
|
|
unsigned long update_bits = X86_CR0_PG | X86_CR0_WP |
|
|
|
|
X86_CR0_CD | X86_CR0_NW;
|
|
|
|
|
2010-01-06 20:10:22 +03:00
|
|
|
cr0 |= X86_CR0_ET;
|
|
|
|
|
2010-01-21 16:28:46 +03:00
|
|
|
#ifdef CONFIG_X86_64
|
2010-04-28 20:15:31 +04:00
|
|
|
if (cr0 & 0xffffffff00000000UL)
|
|
|
|
return 1;
|
2010-01-21 16:28:46 +03:00
|
|
|
#endif
|
|
|
|
|
|
|
|
cr0 &= ~CR0_RESERVED_BITS;
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
|
2010-04-28 20:15:31 +04:00
|
|
|
if ((cr0 & X86_CR0_NW) && !(cr0 & X86_CR0_CD))
|
|
|
|
return 1;
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
|
2010-04-28 20:15:31 +04:00
|
|
|
if ((cr0 & X86_CR0_PG) && !(cr0 & X86_CR0_PE))
|
|
|
|
return 1;
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
|
|
|
|
if (!is_paging(vcpu) && (cr0 & X86_CR0_PG)) {
|
|
|
|
#ifdef CONFIG_X86_64
|
2010-01-21 16:31:50 +03:00
|
|
|
if ((vcpu->arch.efer & EFER_LME)) {
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
int cs_db, cs_l;
|
|
|
|
|
2010-04-28 20:15:31 +04:00
|
|
|
if (!is_pae(vcpu))
|
|
|
|
return 1;
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
kvm_x86_ops->get_cs_db_l_bits(vcpu, &cs_db, &cs_l);
|
2010-04-28 20:15:31 +04:00
|
|
|
if (cs_l)
|
|
|
|
return 1;
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
} else
|
|
|
|
#endif
|
2010-04-28 20:15:31 +04:00
|
|
|
if (is_pae(vcpu) && !load_pdptrs(vcpu, vcpu->arch.cr3))
|
|
|
|
return 1;
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
kvm_x86_ops->set_cr0(vcpu, cr0);
|
|
|
|
|
2010-05-12 12:40:42 +04:00
|
|
|
if ((cr0 ^ old_cr0) & update_bits)
|
|
|
|
kvm_mmu_reset_context(vcpu);
|
2010-04-28 20:15:31 +04:00
|
|
|
return 0;
|
|
|
|
}
|
2008-02-24 12:20:43 +03:00
|
|
|
EXPORT_SYMBOL_GPL(kvm_set_cr0);
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
|
2008-02-24 12:20:43 +03:00
|
|
|
void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw)
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
{
|
2010-06-10 18:02:14 +04:00
|
|
|
(void)kvm_set_cr0(vcpu, kvm_read_cr0_bits(vcpu, ~0x0eul) | (msw & 0x0f));
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
}
|
2008-02-24 12:20:43 +03:00
|
|
|
EXPORT_SYMBOL_GPL(kvm_lmsw);
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
|
2010-06-10 07:27:12 +04:00
|
|
|
int __kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr)
|
|
|
|
{
|
|
|
|
u64 xcr0;
|
|
|
|
|
|
|
|
/* Only support XCR_XFEATURE_ENABLED_MASK(xcr0) now */
|
|
|
|
if (index != XCR_XFEATURE_ENABLED_MASK)
|
|
|
|
return 1;
|
|
|
|
xcr0 = xcr;
|
|
|
|
if (kvm_x86_ops->get_cpl(vcpu) != 0)
|
|
|
|
return 1;
|
|
|
|
if (!(xcr0 & XSTATE_FP))
|
|
|
|
return 1;
|
|
|
|
if ((xcr0 & XSTATE_YMM) && !(xcr0 & XSTATE_SSE))
|
|
|
|
return 1;
|
|
|
|
if (xcr0 & ~host_xcr0)
|
|
|
|
return 1;
|
|
|
|
vcpu->arch.xcr0 = xcr0;
|
|
|
|
vcpu->guest_xcr0_loaded = 0;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr)
|
|
|
|
{
|
|
|
|
if (__kvm_set_xcr(vcpu, index, xcr)) {
|
|
|
|
kvm_inject_gp(vcpu, 0);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(kvm_set_xcr);
|
|
|
|
|
|
|
|
static bool guest_cpuid_has_xsave(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
struct kvm_cpuid_entry2 *best;
|
|
|
|
|
|
|
|
best = kvm_find_cpuid_entry(vcpu, 1, 0);
|
|
|
|
return best && (best->ecx & bit(X86_FEATURE_XSAVE));
|
|
|
|
}
|
|
|
|
|
|
|
|
static void update_cpuid(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
struct kvm_cpuid_entry2 *best;
|
|
|
|
|
|
|
|
best = kvm_find_cpuid_entry(vcpu, 1, 0);
|
|
|
|
if (!best)
|
|
|
|
return;
|
|
|
|
|
|
|
|
/* Update OSXSAVE bit */
|
|
|
|
if (cpu_has_xsave && best->function == 0x1) {
|
|
|
|
best->ecx &= ~(bit(X86_FEATURE_OSXSAVE));
|
|
|
|
if (kvm_read_cr4_bits(vcpu, X86_CR4_OSXSAVE))
|
|
|
|
best->ecx |= bit(X86_FEATURE_OSXSAVE);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-06-10 18:02:15 +04:00
|
|
|
int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
{
|
2009-12-07 13:16:48 +03:00
|
|
|
unsigned long old_cr4 = kvm_read_cr4(vcpu);
|
2009-05-24 23:19:00 +04:00
|
|
|
unsigned long pdptr_bits = X86_CR4_PGE | X86_CR4_PSE | X86_CR4_PAE;
|
|
|
|
|
2010-04-28 20:15:31 +04:00
|
|
|
if (cr4 & CR4_RESERVED_BITS)
|
|
|
|
return 1;
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
|
2010-06-10 07:27:12 +04:00
|
|
|
if (!guest_cpuid_has_xsave(vcpu) && (cr4 & X86_CR4_OSXSAVE))
|
|
|
|
return 1;
|
|
|
|
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
if (is_long_mode(vcpu)) {
|
2010-04-28 20:15:31 +04:00
|
|
|
if (!(cr4 & X86_CR4_PAE))
|
|
|
|
return 1;
|
2009-05-24 23:19:00 +04:00
|
|
|
} else if (is_paging(vcpu) && (cr4 & X86_CR4_PAE)
|
|
|
|
&& ((cr4 ^ old_cr4) & pdptr_bits)
|
2010-04-28 20:15:31 +04:00
|
|
|
&& !load_pdptrs(vcpu, vcpu->arch.cr3))
|
|
|
|
return 1;
|
|
|
|
|
|
|
|
if (cr4 & X86_CR4_VMXE)
|
|
|
|
return 1;
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
|
|
|
|
kvm_x86_ops->set_cr4(vcpu, cr4);
|
2010-05-12 12:40:41 +04:00
|
|
|
|
2010-05-12 12:40:42 +04:00
|
|
|
if ((cr4 ^ old_cr4) & pdptr_bits)
|
|
|
|
kvm_mmu_reset_context(vcpu);
|
2010-04-28 20:15:31 +04:00
|
|
|
|
2010-06-10 07:27:12 +04:00
|
|
|
if ((cr4 ^ old_cr4) & X86_CR4_OSXSAVE)
|
|
|
|
update_cpuid(vcpu);
|
|
|
|
|
2010-04-28 20:15:31 +04:00
|
|
|
return 0;
|
|
|
|
}
|
2008-02-24 12:20:43 +03:00
|
|
|
EXPORT_SYMBOL_GPL(kvm_set_cr4);
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
|
2010-06-10 18:02:16 +04:00
|
|
|
int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3)
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
{
|
2007-12-13 18:50:52 +03:00
|
|
|
if (cr3 == vcpu->arch.cr3 && !pdptrs_changed(vcpu)) {
|
2008-09-23 20:18:34 +04:00
|
|
|
kvm_mmu_sync_roots(vcpu);
|
2007-11-21 03:57:59 +03:00
|
|
|
kvm_mmu_flush_tlb(vcpu);
|
2010-04-28 20:15:31 +04:00
|
|
|
return 0;
|
2007-11-21 03:57:59 +03:00
|
|
|
}
|
|
|
|
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
if (is_long_mode(vcpu)) {
|
2010-04-28 20:15:31 +04:00
|
|
|
if (cr3 & CR3_L_MODE_RESERVED_BITS)
|
|
|
|
return 1;
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
} else {
|
|
|
|
if (is_pae(vcpu)) {
|
2010-04-28 20:15:31 +04:00
|
|
|
if (cr3 & CR3_PAE_RESERVED_BITS)
|
|
|
|
return 1;
|
|
|
|
if (is_paging(vcpu) && !load_pdptrs(vcpu, cr3))
|
|
|
|
return 1;
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
}
|
|
|
|
/*
|
|
|
|
* We don't check reserved bits in nonpae mode, because
|
|
|
|
* this isn't enforced, and VMware depends on this.
|
|
|
|
*/
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Does the new cr3 value map to physical memory? (Note, we
|
|
|
|
* catch an invalid cr3 even in real-mode, because it would
|
|
|
|
* cause trouble later on when we turn on paging anyway.)
|
|
|
|
*
|
|
|
|
* A real CPU would silently accept an invalid cr3 and would
|
|
|
|
* attempt to use it - with largely undefined (and often hard
|
|
|
|
* to debug) behavior on the guest side.
|
|
|
|
*/
|
|
|
|
if (unlikely(!gfn_to_memslot(vcpu->kvm, cr3 >> PAGE_SHIFT)))
|
2010-04-28 20:15:31 +04:00
|
|
|
return 1;
|
|
|
|
vcpu->arch.cr3 = cr3;
|
|
|
|
vcpu->arch.mmu.new_cr3(vcpu);
|
|
|
|
return 0;
|
|
|
|
}
|
2008-02-24 12:20:43 +03:00
|
|
|
EXPORT_SYMBOL_GPL(kvm_set_cr3);
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
|
2010-04-28 20:15:31 +04:00
|
|
|
int __kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8)
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
{
|
2010-04-28 20:15:31 +04:00
|
|
|
if (cr8 & CR8_RESERVED_BITS)
|
|
|
|
return 1;
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
if (irqchip_in_kernel(vcpu->kvm))
|
|
|
|
kvm_lapic_set_tpr(vcpu, cr8);
|
|
|
|
else
|
2007-12-13 18:50:52 +03:00
|
|
|
vcpu->arch.cr8 = cr8;
|
2010-04-28 20:15:31 +04:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
void kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8)
|
|
|
|
{
|
|
|
|
if (__kvm_set_cr8(vcpu, cr8))
|
|
|
|
kvm_inject_gp(vcpu, 0);
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
}
|
2008-02-24 12:20:43 +03:00
|
|
|
EXPORT_SYMBOL_GPL(kvm_set_cr8);
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
|
2008-02-24 12:20:43 +03:00
|
|
|
unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu)
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
{
|
|
|
|
if (irqchip_in_kernel(vcpu->kvm))
|
|
|
|
return kvm_lapic_get_cr8(vcpu);
|
|
|
|
else
|
2007-12-13 18:50:52 +03:00
|
|
|
return vcpu->arch.cr8;
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
}
|
2008-02-24 12:20:43 +03:00
|
|
|
EXPORT_SYMBOL_GPL(kvm_get_cr8);
|
KVM: Portability: Move control register helper functions to x86.c
This patch moves the definitions of CR0_RESERVED_BITS,
CR4_RESERVED_BITS, and CR8_RESERVED_BITS along with the following
functions from kvm_main.c to x86.c:
set_cr0(), set_cr3(), set_cr4(), set_cr8(), get_cr8(), lmsw(),
load_pdptrs()
The static function wrapper inject_gp is duplicated in kvm_main.c and
x86.c for now, the version in kvm_main.c should disappear once the last
user of it is gone too.
The function load_pdptrs is no longer static, and now defined in x86.h
for the time being, until the last user of it is gone from kvm_main.c.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-29 18:09:35 +03:00
|
|
|
|
2010-04-28 20:15:32 +04:00
|
|
|
static int __kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val)
|
2010-04-13 11:05:23 +04:00
|
|
|
{
|
|
|
|
switch (dr) {
|
|
|
|
case 0 ... 3:
|
|
|
|
vcpu->arch.db[dr] = val;
|
|
|
|
if (!(vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP))
|
|
|
|
vcpu->arch.eff_db[dr] = val;
|
|
|
|
break;
|
|
|
|
case 4:
|
2010-04-28 20:15:32 +04:00
|
|
|
if (kvm_read_cr4_bits(vcpu, X86_CR4_DE))
|
|
|
|
return 1; /* #UD */
|
2010-04-13 11:05:23 +04:00
|
|
|
/* fall through */
|
|
|
|
case 6:
|
2010-04-28 20:15:32 +04:00
|
|
|
if (val & 0xffffffff00000000ULL)
|
|
|
|
return -1; /* #GP */
|
2010-04-13 11:05:23 +04:00
|
|
|
vcpu->arch.dr6 = (val & DR6_VOLATILE) | DR6_FIXED_1;
|
|
|
|
break;
|
|
|
|
case 5:
|
2010-04-28 20:15:32 +04:00
|
|
|
if (kvm_read_cr4_bits(vcpu, X86_CR4_DE))
|
|
|
|
return 1; /* #UD */
|
2010-04-13 11:05:23 +04:00
|
|
|
/* fall through */
|
|
|
|
default: /* 7 */
|
2010-04-28 20:15:32 +04:00
|
|
|
if (val & 0xffffffff00000000ULL)
|
|
|
|
return -1; /* #GP */
|
2010-04-13 11:05:23 +04:00
|
|
|
vcpu->arch.dr7 = (val & DR7_VOLATILE) | DR7_FIXED_1;
|
|
|
|
if (!(vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP)) {
|
|
|
|
kvm_x86_ops->set_dr7(vcpu, vcpu->arch.dr7);
|
|
|
|
vcpu->arch.switch_db_regs = (val & DR7_BP_EN_MASK);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
2010-04-28 20:15:32 +04:00
|
|
|
|
|
|
|
int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val)
|
|
|
|
{
|
|
|
|
int res;
|
|
|
|
|
|
|
|
res = __kvm_set_dr(vcpu, dr, val);
|
|
|
|
if (res > 0)
|
|
|
|
kvm_queue_exception(vcpu, UD_VECTOR);
|
|
|
|
else if (res < 0)
|
|
|
|
kvm_inject_gp(vcpu, 0);
|
|
|
|
|
|
|
|
return res;
|
|
|
|
}
|
2010-04-13 11:05:23 +04:00
|
|
|
EXPORT_SYMBOL_GPL(kvm_set_dr);
|
|
|
|
|
2010-04-28 20:15:32 +04:00
|
|
|
static int _kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val)
|
2010-04-13 11:05:23 +04:00
|
|
|
{
|
|
|
|
switch (dr) {
|
|
|
|
case 0 ... 3:
|
|
|
|
*val = vcpu->arch.db[dr];
|
|
|
|
break;
|
|
|
|
case 4:
|
2010-04-28 20:15:32 +04:00
|
|
|
if (kvm_read_cr4_bits(vcpu, X86_CR4_DE))
|
2010-04-13 11:05:23 +04:00
|
|
|
return 1;
|
|
|
|
/* fall through */
|
|
|
|
case 6:
|
|
|
|
*val = vcpu->arch.dr6;
|
|
|
|
break;
|
|
|
|
case 5:
|
2010-04-28 20:15:32 +04:00
|
|
|
if (kvm_read_cr4_bits(vcpu, X86_CR4_DE))
|
2010-04-13 11:05:23 +04:00
|
|
|
return 1;
|
|
|
|
/* fall through */
|
|
|
|
default: /* 7 */
|
|
|
|
*val = vcpu->arch.dr7;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
2010-04-28 20:15:32 +04:00
|
|
|
|
|
|
|
int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val)
|
|
|
|
{
|
|
|
|
if (_kvm_get_dr(vcpu, dr, val)) {
|
|
|
|
kvm_queue_exception(vcpu, UD_VECTOR);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
2010-04-13 11:05:23 +04:00
|
|
|
EXPORT_SYMBOL_GPL(kvm_get_dr);
|
|
|
|
|
2007-10-10 19:16:19 +04:00
|
|
|
/*
|
|
|
|
* List of msr numbers which we expose to userspace through KVM_GET_MSRS
|
|
|
|
* and KVM_SET_MSRS, and KVM_GET_MSR_INDEX_LIST.
|
|
|
|
*
|
|
|
|
* This list is modified at module load time to reflect the
|
2009-10-06 21:24:50 +04:00
|
|
|
* capabilities of the host cpu. This capabilities test skips MSRs that are
|
|
|
|
* kvm-specific. Those are put in the beginning of the list.
|
2007-10-10 19:16:19 +04:00
|
|
|
*/
|
2009-10-06 21:24:50 +04:00
|
|
|
|
2010-05-11 20:17:41 +04:00
|
|
|
#define KVM_SAVE_MSRS_BEGIN 7
|
2007-10-10 19:16:19 +04:00
|
|
|
static u32 msrs_to_save[] = {
|
2009-10-06 21:24:50 +04:00
|
|
|
MSR_KVM_SYSTEM_TIME, MSR_KVM_WALL_CLOCK,
|
2010-05-11 20:17:41 +04:00
|
|
|
MSR_KVM_SYSTEM_TIME_NEW, MSR_KVM_WALL_CLOCK_NEW,
|
2010-01-17 16:51:22 +03:00
|
|
|
HV_X64_MSR_GUEST_OS_ID, HV_X64_MSR_HYPERCALL,
|
2010-01-17 16:51:23 +03:00
|
|
|
HV_X64_MSR_APIC_ASSIST_PAGE,
|
2007-10-10 19:16:19 +04:00
|
|
|
MSR_IA32_SYSENTER_CS, MSR_IA32_SYSENTER_ESP, MSR_IA32_SYSENTER_EIP,
|
|
|
|
MSR_K6_STAR,
|
|
|
|
#ifdef CONFIG_X86_64
|
|
|
|
MSR_CSTAR, MSR_KERNEL_GS_BASE, MSR_SYSCALL_MASK, MSR_LSTAR,
|
|
|
|
#endif
|
2009-10-06 21:24:50 +04:00
|
|
|
MSR_IA32_TSC, MSR_IA32_PERF_STATUS, MSR_IA32_CR_PAT, MSR_VM_HSAVE_PA
|
2007-10-10 19:16:19 +04:00
|
|
|
};
|
|
|
|
|
|
|
|
static unsigned num_msrs_to_save;
|
|
|
|
|
|
|
|
static u32 emulated_msrs[] = {
|
|
|
|
MSR_IA32_MISC_ENABLE,
|
|
|
|
};
|
|
|
|
|
2010-05-06 13:38:43 +04:00
|
|
|
static int set_efer(struct kvm_vcpu *vcpu, u64 efer)
|
2007-10-30 20:44:17 +03:00
|
|
|
{
|
2010-05-12 12:40:42 +04:00
|
|
|
u64 old_efer = vcpu->arch.efer;
|
|
|
|
|
2010-05-06 13:38:43 +04:00
|
|
|
if (efer & efer_reserved_bits)
|
|
|
|
return 1;
|
2007-10-30 20:44:17 +03:00
|
|
|
|
|
|
|
if (is_paging(vcpu)
|
2010-05-06 13:38:43 +04:00
|
|
|
&& (vcpu->arch.efer & EFER_LME) != (efer & EFER_LME))
|
|
|
|
return 1;
|
2007-10-30 20:44:17 +03:00
|
|
|
|
2009-02-02 18:23:51 +03:00
|
|
|
if (efer & EFER_FFXSR) {
|
|
|
|
struct kvm_cpuid_entry2 *feat;
|
|
|
|
|
|
|
|
feat = kvm_find_cpuid_entry(vcpu, 0x80000001, 0);
|
2010-05-06 13:38:43 +04:00
|
|
|
if (!feat || !(feat->edx & bit(X86_FEATURE_FXSR_OPT)))
|
|
|
|
return 1;
|
2009-02-02 18:23:51 +03:00
|
|
|
}
|
|
|
|
|
2008-11-25 22:17:11 +03:00
|
|
|
if (efer & EFER_SVME) {
|
|
|
|
struct kvm_cpuid_entry2 *feat;
|
|
|
|
|
|
|
|
feat = kvm_find_cpuid_entry(vcpu, 0x80000001, 0);
|
2010-05-06 13:38:43 +04:00
|
|
|
if (!feat || !(feat->ecx & bit(X86_FEATURE_SVM)))
|
|
|
|
return 1;
|
2008-11-25 22:17:11 +03:00
|
|
|
}
|
|
|
|
|
2007-10-30 20:44:17 +03:00
|
|
|
efer &= ~EFER_LMA;
|
2010-01-21 16:31:50 +03:00
|
|
|
efer |= vcpu->arch.efer & EFER_LMA;
|
2007-10-30 20:44:17 +03:00
|
|
|
|
2010-05-12 12:40:40 +04:00
|
|
|
kvm_x86_ops->set_efer(vcpu, efer);
|
|
|
|
|
2009-03-31 12:31:54 +04:00
|
|
|
vcpu->arch.mmu.base_role.nxe = (efer & EFER_NX) && !tdp_enabled;
|
|
|
|
kvm_mmu_reset_context(vcpu);
|
2010-05-06 13:38:43 +04:00
|
|
|
|
2010-05-12 12:40:42 +04:00
|
|
|
/* Update reserved bits */
|
|
|
|
if ((efer ^ old_efer) & EFER_NX)
|
|
|
|
kvm_mmu_reset_context(vcpu);
|
|
|
|
|
2010-05-06 13:38:43 +04:00
|
|
|
return 0;
|
2007-10-30 20:44:17 +03:00
|
|
|
}
|
|
|
|
|
2008-01-31 16:57:37 +03:00
|
|
|
void kvm_enable_efer_bits(u64 mask)
|
|
|
|
{
|
|
|
|
efer_reserved_bits &= ~mask;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(kvm_enable_efer_bits);
|
|
|
|
|
|
|
|
|
2007-10-30 20:44:17 +03:00
|
|
|
/*
|
|
|
|
* Writes msr value into into the appropriate "register".
|
|
|
|
* Returns 0 on success, non-0 otherwise.
|
|
|
|
* Assumes vcpu_load() was already called.
|
|
|
|
*/
|
|
|
|
int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data)
|
|
|
|
{
|
|
|
|
return kvm_x86_ops->set_msr(vcpu, msr_index, data);
|
|
|
|
}
|
|
|
|
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
/*
|
|
|
|
* Adapt set_msr() to msr_io()'s calling convention
|
|
|
|
*/
|
|
|
|
static int do_set_msr(struct kvm_vcpu *vcpu, unsigned index, u64 *data)
|
|
|
|
{
|
|
|
|
return kvm_set_msr(vcpu, index, *data);
|
|
|
|
}
|
|
|
|
|
2008-02-15 22:52:47 +03:00
|
|
|
static void kvm_write_wall_clock(struct kvm *kvm, gpa_t wall_clock)
|
|
|
|
{
|
2010-05-04 16:00:37 +04:00
|
|
|
int version;
|
|
|
|
int r;
|
2008-06-03 18:17:31 +04:00
|
|
|
struct pvclock_wall_clock wc;
|
2010-01-27 14:13:49 +03:00
|
|
|
struct timespec boot;
|
2008-02-15 22:52:47 +03:00
|
|
|
|
|
|
|
if (!wall_clock)
|
|
|
|
return;
|
|
|
|
|
2010-05-04 16:00:37 +04:00
|
|
|
r = kvm_read_guest(kvm, wall_clock, &version, sizeof(version));
|
|
|
|
if (r)
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (version & 1)
|
|
|
|
++version; /* first time write, random junk */
|
|
|
|
|
|
|
|
++version;
|
2008-02-15 22:52:47 +03:00
|
|
|
|
|
|
|
kvm_write_guest(kvm, wall_clock, &version, sizeof(version));
|
|
|
|
|
2008-06-03 18:17:31 +04:00
|
|
|
/*
|
|
|
|
* The guest calculates current wall clock time by adding
|
|
|
|
* system time (updated by kvm_write_guest_time below) to the
|
|
|
|
* wall clock specified here. guest system time equals host
|
|
|
|
* system time for us, thus we must fill in host boot time here.
|
|
|
|
*/
|
2010-01-27 14:13:49 +03:00
|
|
|
getboottime(&boot);
|
2008-06-03 18:17:31 +04:00
|
|
|
|
|
|
|
wc.sec = boot.tv_sec;
|
|
|
|
wc.nsec = boot.tv_nsec;
|
|
|
|
wc.version = version;
|
2008-02-15 22:52:47 +03:00
|
|
|
|
|
|
|
kvm_write_guest(kvm, wall_clock, &wc, sizeof(wc));
|
|
|
|
|
|
|
|
version++;
|
|
|
|
kvm_write_guest(kvm, wall_clock, &version, sizeof(version));
|
|
|
|
}
|
|
|
|
|
2008-06-03 18:17:31 +04:00
|
|
|
static uint32_t div_frac(uint32_t dividend, uint32_t divisor)
|
|
|
|
{
|
|
|
|
uint32_t quotient, remainder;
|
|
|
|
|
|
|
|
/* Don't try to replace with do_div(), this one calculates
|
|
|
|
* "(dividend << 32) / divisor" */
|
|
|
|
__asm__ ( "divl %4"
|
|
|
|
: "=a" (quotient), "=d" (remainder)
|
|
|
|
: "0" (0), "1" (dividend), "r" (divisor) );
|
|
|
|
return quotient;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void kvm_set_time_scale(uint32_t tsc_khz, struct pvclock_vcpu_time_info *hv_clock)
|
|
|
|
{
|
|
|
|
uint64_t nsecs = 1000000000LL;
|
|
|
|
int32_t shift = 0;
|
|
|
|
uint64_t tps64;
|
|
|
|
uint32_t tps32;
|
|
|
|
|
|
|
|
tps64 = tsc_khz * 1000LL;
|
|
|
|
while (tps64 > nsecs*2) {
|
|
|
|
tps64 >>= 1;
|
|
|
|
shift--;
|
|
|
|
}
|
|
|
|
|
|
|
|
tps32 = (uint32_t)tps64;
|
|
|
|
while (tps32 <= (uint32_t)nsecs) {
|
|
|
|
tps32 <<= 1;
|
|
|
|
shift++;
|
|
|
|
}
|
|
|
|
|
|
|
|
hv_clock->tsc_shift = shift;
|
|
|
|
hv_clock->tsc_to_system_mul = div_frac(nsecs, tps32);
|
|
|
|
|
|
|
|
pr_debug("%s: tsc_khz %u, tsc_shift %d, tsc_mul %u\n",
|
2008-10-16 09:01:25 +04:00
|
|
|
__func__, tsc_khz, hv_clock->tsc_shift,
|
2008-06-03 18:17:31 +04:00
|
|
|
hv_clock->tsc_to_system_mul);
|
|
|
|
}
|
|
|
|
|
2009-02-04 19:52:04 +03:00
|
|
|
static DEFINE_PER_CPU(unsigned long, cpu_tsc_khz);
|
|
|
|
|
2008-02-15 22:52:47 +03:00
|
|
|
static void kvm_write_guest_time(struct kvm_vcpu *v)
|
|
|
|
{
|
|
|
|
struct timespec ts;
|
|
|
|
unsigned long flags;
|
|
|
|
struct kvm_vcpu_arch *vcpu = &v->arch;
|
|
|
|
void *shared_kaddr;
|
2009-04-12 16:49:07 +04:00
|
|
|
unsigned long this_tsc_khz;
|
2008-02-15 22:52:47 +03:00
|
|
|
|
|
|
|
if ((!vcpu->time_page))
|
|
|
|
return;
|
|
|
|
|
2009-04-12 16:49:07 +04:00
|
|
|
this_tsc_khz = get_cpu_var(cpu_tsc_khz);
|
|
|
|
if (unlikely(vcpu->hv_clock_tsc_khz != this_tsc_khz)) {
|
|
|
|
kvm_set_time_scale(this_tsc_khz, &vcpu->hv_clock);
|
|
|
|
vcpu->hv_clock_tsc_khz = this_tsc_khz;
|
2008-06-03 18:17:31 +04:00
|
|
|
}
|
2009-04-12 16:49:07 +04:00
|
|
|
put_cpu_var(cpu_tsc_khz);
|
2008-06-03 18:17:31 +04:00
|
|
|
|
2008-02-15 22:52:47 +03:00
|
|
|
/* Keep irq disabled to prevent changes to the clock */
|
|
|
|
local_irq_save(flags);
|
2009-05-15 17:12:05 +04:00
|
|
|
kvm_get_msr(v, MSR_IA32_TSC, &vcpu->hv_clock.tsc_timestamp);
|
2008-02-15 22:52:47 +03:00
|
|
|
ktime_get_ts(&ts);
|
2010-01-27 14:13:49 +03:00
|
|
|
monotonic_to_bootbased(&ts);
|
2008-02-15 22:52:47 +03:00
|
|
|
local_irq_restore(flags);
|
|
|
|
|
|
|
|
/* With all the info we got, fill in the values */
|
|
|
|
|
|
|
|
vcpu->hv_clock.system_time = ts.tv_nsec +
|
2009-10-16 23:28:36 +04:00
|
|
|
(NSEC_PER_SEC * (u64)ts.tv_sec) + v->kvm->arch.kvmclock_offset;
|
|
|
|
|
2010-05-11 20:17:46 +04:00
|
|
|
vcpu->hv_clock.flags = 0;
|
|
|
|
|
2008-02-15 22:52:47 +03:00
|
|
|
/*
|
|
|
|
* The interface expects us to write an even number signaling that the
|
|
|
|
* update is finished. Since the guest won't see the intermediate
|
2008-06-03 18:17:31 +04:00
|
|
|
* state, we just increase by 2 at the end.
|
2008-02-15 22:52:47 +03:00
|
|
|
*/
|
2008-06-03 18:17:31 +04:00
|
|
|
vcpu->hv_clock.version += 2;
|
2008-02-15 22:52:47 +03:00
|
|
|
|
|
|
|
shared_kaddr = kmap_atomic(vcpu->time_page, KM_USER0);
|
|
|
|
|
|
|
|
memcpy(shared_kaddr + vcpu->time_offset, &vcpu->hv_clock,
|
2008-06-03 18:17:31 +04:00
|
|
|
sizeof(vcpu->hv_clock));
|
2008-02-15 22:52:47 +03:00
|
|
|
|
|
|
|
kunmap_atomic(shared_kaddr, KM_USER0);
|
|
|
|
|
|
|
|
mark_page_dirty(v->kvm, vcpu->time >> PAGE_SHIFT);
|
|
|
|
}
|
|
|
|
|
2009-02-04 19:52:04 +03:00
|
|
|
static int kvm_request_guest_time_update(struct kvm_vcpu *v)
|
|
|
|
{
|
|
|
|
struct kvm_vcpu_arch *vcpu = &v->arch;
|
|
|
|
|
|
|
|
if (!vcpu->time_page)
|
|
|
|
return 0;
|
2010-05-10 13:34:53 +04:00
|
|
|
kvm_make_request(KVM_REQ_KVMCLOCK_UPDATE, v);
|
2009-02-04 19:52:04 +03:00
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
2008-05-26 21:06:35 +04:00
|
|
|
static bool msr_mtrr_valid(unsigned msr)
|
|
|
|
{
|
|
|
|
switch (msr) {
|
|
|
|
case 0x200 ... 0x200 + 2 * KVM_NR_VAR_MTRR - 1:
|
|
|
|
case MSR_MTRRfix64K_00000:
|
|
|
|
case MSR_MTRRfix16K_80000:
|
|
|
|
case MSR_MTRRfix16K_A0000:
|
|
|
|
case MSR_MTRRfix4K_C0000:
|
|
|
|
case MSR_MTRRfix4K_C8000:
|
|
|
|
case MSR_MTRRfix4K_D0000:
|
|
|
|
case MSR_MTRRfix4K_D8000:
|
|
|
|
case MSR_MTRRfix4K_E0000:
|
|
|
|
case MSR_MTRRfix4K_E8000:
|
|
|
|
case MSR_MTRRfix4K_F0000:
|
|
|
|
case MSR_MTRRfix4K_F8000:
|
|
|
|
case MSR_MTRRdefType:
|
|
|
|
case MSR_IA32_CR_PAT:
|
|
|
|
return true;
|
|
|
|
case 0x2f8:
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2009-06-22 22:27:56 +04:00
|
|
|
static bool valid_pat_type(unsigned t)
|
|
|
|
{
|
|
|
|
return t < 8 && (1 << t) & 0xf3; /* 0, 1, 4, 5, 6, 7 */
|
|
|
|
}
|
|
|
|
|
|
|
|
static bool valid_mtrr_type(unsigned t)
|
|
|
|
{
|
|
|
|
return t < 8 && (1 << t) & 0x73; /* 0, 1, 4, 5, 6 */
|
|
|
|
}
|
|
|
|
|
|
|
|
static bool mtrr_valid(struct kvm_vcpu *vcpu, u32 msr, u64 data)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
if (!msr_mtrr_valid(msr))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
if (msr == MSR_IA32_CR_PAT) {
|
|
|
|
for (i = 0; i < 8; i++)
|
|
|
|
if (!valid_pat_type((data >> (i * 8)) & 0xff))
|
|
|
|
return false;
|
|
|
|
return true;
|
|
|
|
} else if (msr == MSR_MTRRdefType) {
|
|
|
|
if (data & ~0xcff)
|
|
|
|
return false;
|
|
|
|
return valid_mtrr_type(data & 0xff);
|
|
|
|
} else if (msr >= MSR_MTRRfix64K_00000 && msr <= MSR_MTRRfix4K_F8000) {
|
|
|
|
for (i = 0; i < 8 ; i++)
|
|
|
|
if (!valid_mtrr_type((data >> (i * 8)) & 0xff))
|
|
|
|
return false;
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* variable MTRRs */
|
|
|
|
return valid_mtrr_type(data & 0xff);
|
|
|
|
}
|
|
|
|
|
2008-05-26 21:06:35 +04:00
|
|
|
static int set_msr_mtrr(struct kvm_vcpu *vcpu, u32 msr, u64 data)
|
|
|
|
{
|
2008-10-09 12:01:54 +04:00
|
|
|
u64 *p = (u64 *)&vcpu->arch.mtrr_state.fixed_ranges;
|
|
|
|
|
2009-06-22 22:27:56 +04:00
|
|
|
if (!mtrr_valid(vcpu, msr, data))
|
2008-05-26 21:06:35 +04:00
|
|
|
return 1;
|
|
|
|
|
2008-10-09 12:01:54 +04:00
|
|
|
if (msr == MSR_MTRRdefType) {
|
|
|
|
vcpu->arch.mtrr_state.def_type = data;
|
|
|
|
vcpu->arch.mtrr_state.enabled = (data & 0xc00) >> 10;
|
|
|
|
} else if (msr == MSR_MTRRfix64K_00000)
|
|
|
|
p[0] = data;
|
|
|
|
else if (msr == MSR_MTRRfix16K_80000 || msr == MSR_MTRRfix16K_A0000)
|
|
|
|
p[1 + msr - MSR_MTRRfix16K_80000] = data;
|
|
|
|
else if (msr >= MSR_MTRRfix4K_C0000 && msr <= MSR_MTRRfix4K_F8000)
|
|
|
|
p[3 + msr - MSR_MTRRfix4K_C0000] = data;
|
|
|
|
else if (msr == MSR_IA32_CR_PAT)
|
|
|
|
vcpu->arch.pat = data;
|
|
|
|
else { /* Variable MTRRs */
|
|
|
|
int idx, is_mtrr_mask;
|
|
|
|
u64 *pt;
|
|
|
|
|
|
|
|
idx = (msr - 0x200) / 2;
|
|
|
|
is_mtrr_mask = msr - 0x200 - 2 * idx;
|
|
|
|
if (!is_mtrr_mask)
|
|
|
|
pt =
|
|
|
|
(u64 *)&vcpu->arch.mtrr_state.var_ranges[idx].base_lo;
|
|
|
|
else
|
|
|
|
pt =
|
|
|
|
(u64 *)&vcpu->arch.mtrr_state.var_ranges[idx].mask_lo;
|
|
|
|
*pt = data;
|
|
|
|
}
|
|
|
|
|
|
|
|
kvm_mmu_reset_context(vcpu);
|
2008-05-26 21:06:35 +04:00
|
|
|
return 0;
|
|
|
|
}
|
2007-10-30 20:44:17 +03:00
|
|
|
|
2009-05-11 12:48:15 +04:00
|
|
|
static int set_msr_mce(struct kvm_vcpu *vcpu, u32 msr, u64 data)
|
2007-10-30 20:44:17 +03:00
|
|
|
{
|
2009-05-11 12:48:15 +04:00
|
|
|
u64 mcg_cap = vcpu->arch.mcg_cap;
|
|
|
|
unsigned bank_num = mcg_cap & 0xff;
|
|
|
|
|
2007-10-30 20:44:17 +03:00
|
|
|
switch (msr) {
|
|
|
|
case MSR_IA32_MCG_STATUS:
|
2009-05-11 12:48:15 +04:00
|
|
|
vcpu->arch.mcg_status = data;
|
2007-10-30 20:44:17 +03:00
|
|
|
break;
|
2008-02-11 22:28:27 +03:00
|
|
|
case MSR_IA32_MCG_CTL:
|
2009-05-11 12:48:15 +04:00
|
|
|
if (!(mcg_cap & MCG_CTL_P))
|
|
|
|
return 1;
|
|
|
|
if (data != 0 && data != ~(u64)0)
|
|
|
|
return -1;
|
|
|
|
vcpu->arch.mcg_ctl = data;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
if (msr >= MSR_IA32_MC0_CTL &&
|
|
|
|
msr < MSR_IA32_MC0_CTL + 4 * bank_num) {
|
|
|
|
u32 offset = msr - MSR_IA32_MC0_CTL;
|
2010-03-24 19:46:42 +03:00
|
|
|
/* only 0 or all 1s can be written to IA32_MCi_CTL
|
|
|
|
* some Linux kernels though clear bit 10 in bank 4 to
|
|
|
|
* workaround a BIOS/GART TBL issue on AMD K8s, ignore
|
|
|
|
* this to avoid an uncatched #GP in the guest
|
|
|
|
*/
|
2009-05-11 12:48:15 +04:00
|
|
|
if ((offset & 0x3) == 0 &&
|
2010-03-24 19:46:42 +03:00
|
|
|
data != 0 && (data | (1 << 10)) != ~(u64)0)
|
2009-05-11 12:48:15 +04:00
|
|
|
return -1;
|
|
|
|
vcpu->arch.mce_banks[offset] = data;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-10-16 02:21:43 +04:00
|
|
|
static int xen_hvm_config(struct kvm_vcpu *vcpu, u64 data)
|
|
|
|
{
|
|
|
|
struct kvm *kvm = vcpu->kvm;
|
|
|
|
int lm = is_long_mode(vcpu);
|
|
|
|
u8 *blob_addr = lm ? (u8 *)(long)kvm->arch.xen_hvm_config.blob_addr_64
|
|
|
|
: (u8 *)(long)kvm->arch.xen_hvm_config.blob_addr_32;
|
|
|
|
u8 blob_size = lm ? kvm->arch.xen_hvm_config.blob_size_64
|
|
|
|
: kvm->arch.xen_hvm_config.blob_size_32;
|
|
|
|
u32 page_num = data & ~PAGE_MASK;
|
|
|
|
u64 page_addr = data & PAGE_MASK;
|
|
|
|
u8 *page;
|
|
|
|
int r;
|
|
|
|
|
|
|
|
r = -E2BIG;
|
|
|
|
if (page_num >= blob_size)
|
|
|
|
goto out;
|
|
|
|
r = -ENOMEM;
|
|
|
|
page = kzalloc(PAGE_SIZE, GFP_KERNEL);
|
|
|
|
if (!page)
|
|
|
|
goto out;
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_from_user(page, blob_addr + (page_num * PAGE_SIZE), PAGE_SIZE))
|
|
|
|
goto out_free;
|
|
|
|
if (kvm_write_guest(kvm, page_addr, page, PAGE_SIZE))
|
|
|
|
goto out_free;
|
|
|
|
r = 0;
|
|
|
|
out_free:
|
|
|
|
kfree(page);
|
|
|
|
out:
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2010-01-17 16:51:22 +03:00
|
|
|
static bool kvm_hv_hypercall_enabled(struct kvm *kvm)
|
|
|
|
{
|
|
|
|
return kvm->arch.hv_hypercall & HV_X64_MSR_HYPERCALL_ENABLE;
|
|
|
|
}
|
|
|
|
|
|
|
|
static bool kvm_hv_msr_partition_wide(u32 msr)
|
|
|
|
{
|
|
|
|
bool r = false;
|
|
|
|
switch (msr) {
|
|
|
|
case HV_X64_MSR_GUEST_OS_ID:
|
|
|
|
case HV_X64_MSR_HYPERCALL:
|
|
|
|
r = true;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int set_msr_hyperv_pw(struct kvm_vcpu *vcpu, u32 msr, u64 data)
|
|
|
|
{
|
|
|
|
struct kvm *kvm = vcpu->kvm;
|
|
|
|
|
|
|
|
switch (msr) {
|
|
|
|
case HV_X64_MSR_GUEST_OS_ID:
|
|
|
|
kvm->arch.hv_guest_os_id = data;
|
|
|
|
/* setting guest os id to zero disables hypercall page */
|
|
|
|
if (!kvm->arch.hv_guest_os_id)
|
|
|
|
kvm->arch.hv_hypercall &= ~HV_X64_MSR_HYPERCALL_ENABLE;
|
|
|
|
break;
|
|
|
|
case HV_X64_MSR_HYPERCALL: {
|
|
|
|
u64 gfn;
|
|
|
|
unsigned long addr;
|
|
|
|
u8 instructions[4];
|
|
|
|
|
|
|
|
/* if guest os id is not set hypercall should remain disabled */
|
|
|
|
if (!kvm->arch.hv_guest_os_id)
|
|
|
|
break;
|
|
|
|
if (!(data & HV_X64_MSR_HYPERCALL_ENABLE)) {
|
|
|
|
kvm->arch.hv_hypercall = data;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
gfn = data >> HV_X64_MSR_HYPERCALL_PAGE_ADDRESS_SHIFT;
|
|
|
|
addr = gfn_to_hva(kvm, gfn);
|
|
|
|
if (kvm_is_error_hva(addr))
|
|
|
|
return 1;
|
|
|
|
kvm_x86_ops->patch_hypercall(vcpu, instructions);
|
|
|
|
((unsigned char *)instructions)[3] = 0xc3; /* ret */
|
|
|
|
if (copy_to_user((void __user *)addr, instructions, 4))
|
|
|
|
return 1;
|
|
|
|
kvm->arch.hv_hypercall = data;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
default:
|
|
|
|
pr_unimpl(vcpu, "HYPER-V unimplemented wrmsr: 0x%x "
|
|
|
|
"data 0x%llx\n", msr, data);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int set_msr_hyperv(struct kvm_vcpu *vcpu, u32 msr, u64 data)
|
|
|
|
{
|
2010-01-17 16:51:23 +03:00
|
|
|
switch (msr) {
|
|
|
|
case HV_X64_MSR_APIC_ASSIST_PAGE: {
|
|
|
|
unsigned long addr;
|
2010-01-17 16:51:22 +03:00
|
|
|
|
2010-01-17 16:51:23 +03:00
|
|
|
if (!(data & HV_X64_MSR_APIC_ASSIST_PAGE_ENABLE)) {
|
|
|
|
vcpu->arch.hv_vapic = data;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
addr = gfn_to_hva(vcpu->kvm, data >>
|
|
|
|
HV_X64_MSR_APIC_ASSIST_PAGE_ADDRESS_SHIFT);
|
|
|
|
if (kvm_is_error_hva(addr))
|
|
|
|
return 1;
|
|
|
|
if (clear_user((void __user *)addr, PAGE_SIZE))
|
|
|
|
return 1;
|
|
|
|
vcpu->arch.hv_vapic = data;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case HV_X64_MSR_EOI:
|
|
|
|
return kvm_hv_vapic_msr_write(vcpu, APIC_EOI, data);
|
|
|
|
case HV_X64_MSR_ICR:
|
|
|
|
return kvm_hv_vapic_msr_write(vcpu, APIC_ICR, data);
|
|
|
|
case HV_X64_MSR_TPR:
|
|
|
|
return kvm_hv_vapic_msr_write(vcpu, APIC_TASKPRI, data);
|
|
|
|
default:
|
|
|
|
pr_unimpl(vcpu, "HYPER-V unimplemented wrmsr: 0x%x "
|
|
|
|
"data 0x%llx\n", msr, data);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
2010-01-17 16:51:22 +03:00
|
|
|
}
|
|
|
|
|
2007-10-30 20:44:17 +03:00
|
|
|
int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data)
|
|
|
|
{
|
|
|
|
switch (msr) {
|
|
|
|
case MSR_EFER:
|
2010-05-06 13:38:43 +04:00
|
|
|
return set_efer(vcpu, data);
|
2009-06-24 14:44:33 +04:00
|
|
|
case MSR_K7_HWCR:
|
|
|
|
data &= ~(u64)0x40; /* ignore flush filter disable */
|
2010-02-24 20:59:16 +03:00
|
|
|
data &= ~(u64)0x100; /* ignore ignne emulation enable */
|
2009-06-24 14:44:33 +04:00
|
|
|
if (data != 0) {
|
|
|
|
pr_unimpl(vcpu, "unimplemented HWCR wrmsr: 0x%llx\n",
|
|
|
|
data);
|
|
|
|
return 1;
|
|
|
|
}
|
2007-10-30 20:44:17 +03:00
|
|
|
break;
|
2009-07-02 17:04:14 +04:00
|
|
|
case MSR_FAM10H_MMIO_CONF_BASE:
|
|
|
|
if (data != 0) {
|
|
|
|
pr_unimpl(vcpu, "unimplemented MMIO_CONF_BASE wrmsr: "
|
|
|
|
"0x%llx\n", data);
|
|
|
|
return 1;
|
|
|
|
}
|
2007-10-30 20:44:17 +03:00
|
|
|
break;
|
2009-06-24 17:37:05 +04:00
|
|
|
case MSR_AMD64_NB_CFG:
|
2008-02-11 22:28:27 +03:00
|
|
|
break;
|
2008-07-22 10:00:45 +04:00
|
|
|
case MSR_IA32_DEBUGCTLMSR:
|
|
|
|
if (!data) {
|
|
|
|
/* We support the non-activated case already */
|
|
|
|
break;
|
|
|
|
} else if (data & ~(DEBUGCTLMSR_LBR | DEBUGCTLMSR_BTF)) {
|
|
|
|
/* Values other than LBR and BTF are vendor-specific,
|
|
|
|
thus reserved and should throw a #GP */
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
pr_unimpl(vcpu, "%s: MSR_IA32_DEBUGCTLMSR 0x%llx, nop\n",
|
|
|
|
__func__, data);
|
|
|
|
break;
|
2007-10-30 20:44:17 +03:00
|
|
|
case MSR_IA32_UCODE_REV:
|
|
|
|
case MSR_IA32_UCODE_WRITE:
|
2008-12-29 18:32:28 +03:00
|
|
|
case MSR_VM_HSAVE_PA:
|
2009-07-03 18:00:14 +04:00
|
|
|
case MSR_AMD64_PATCH_LOADER:
|
2007-10-30 20:44:17 +03:00
|
|
|
break;
|
2008-05-26 21:06:35 +04:00
|
|
|
case 0x200 ... 0x2ff:
|
|
|
|
return set_msr_mtrr(vcpu, msr, data);
|
2007-10-30 20:44:17 +03:00
|
|
|
case MSR_IA32_APICBASE:
|
|
|
|
kvm_set_apic_base(vcpu, data);
|
|
|
|
break;
|
2009-07-05 18:39:36 +04:00
|
|
|
case APIC_BASE_MSR ... APIC_BASE_MSR + 0x3ff:
|
|
|
|
return kvm_x2apic_msr_write(vcpu, msr, data);
|
2007-10-30 20:44:17 +03:00
|
|
|
case MSR_IA32_MISC_ENABLE:
|
2007-12-13 18:50:52 +03:00
|
|
|
vcpu->arch.ia32_misc_enable_msr = data;
|
2007-10-30 20:44:17 +03:00
|
|
|
break;
|
2010-05-11 20:17:41 +04:00
|
|
|
case MSR_KVM_WALL_CLOCK_NEW:
|
2008-02-15 22:52:47 +03:00
|
|
|
case MSR_KVM_WALL_CLOCK:
|
|
|
|
vcpu->kvm->arch.wall_clock = data;
|
|
|
|
kvm_write_wall_clock(vcpu->kvm, data);
|
|
|
|
break;
|
2010-05-11 20:17:41 +04:00
|
|
|
case MSR_KVM_SYSTEM_TIME_NEW:
|
2008-02-15 22:52:47 +03:00
|
|
|
case MSR_KVM_SYSTEM_TIME: {
|
|
|
|
if (vcpu->arch.time_page) {
|
|
|
|
kvm_release_page_dirty(vcpu->arch.time_page);
|
|
|
|
vcpu->arch.time_page = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
vcpu->arch.time = data;
|
|
|
|
|
|
|
|
/* we verify if the enable bit is set... */
|
|
|
|
if (!(data & 1))
|
|
|
|
break;
|
|
|
|
|
|
|
|
/* ...but clean it before doing the actual write */
|
|
|
|
vcpu->arch.time_offset = data & ~(PAGE_MASK | 1);
|
|
|
|
|
|
|
|
vcpu->arch.time_page =
|
|
|
|
gfn_to_page(vcpu->kvm, data >> PAGE_SHIFT);
|
|
|
|
|
|
|
|
if (is_error_page(vcpu->arch.time_page)) {
|
|
|
|
kvm_release_page_clean(vcpu->arch.time_page);
|
|
|
|
vcpu->arch.time_page = NULL;
|
|
|
|
}
|
|
|
|
|
2009-02-04 19:52:04 +03:00
|
|
|
kvm_request_guest_time_update(vcpu);
|
2008-02-15 22:52:47 +03:00
|
|
|
break;
|
|
|
|
}
|
2009-05-11 12:48:15 +04:00
|
|
|
case MSR_IA32_MCG_CTL:
|
|
|
|
case MSR_IA32_MCG_STATUS:
|
|
|
|
case MSR_IA32_MC0_CTL ... MSR_IA32_MC0_CTL + 4 * KVM_MAX_MCE_BANKS - 1:
|
|
|
|
return set_msr_mce(vcpu, msr, data);
|
2009-06-13 00:01:29 +04:00
|
|
|
|
|
|
|
/* Performance counters are not protected by a CPUID bit,
|
|
|
|
* so we should check all of them in the generic path for the sake of
|
|
|
|
* cross vendor migration.
|
|
|
|
* Writing a zero into the event select MSRs disables them,
|
|
|
|
* which we perfectly emulate ;-). Any other value should be at least
|
|
|
|
* reported, some guests depend on them.
|
|
|
|
*/
|
|
|
|
case MSR_P6_EVNTSEL0:
|
|
|
|
case MSR_P6_EVNTSEL1:
|
|
|
|
case MSR_K7_EVNTSEL0:
|
|
|
|
case MSR_K7_EVNTSEL1:
|
|
|
|
case MSR_K7_EVNTSEL2:
|
|
|
|
case MSR_K7_EVNTSEL3:
|
|
|
|
if (data != 0)
|
|
|
|
pr_unimpl(vcpu, "unimplemented perfctr wrmsr: "
|
|
|
|
"0x%x data 0x%llx\n", msr, data);
|
|
|
|
break;
|
|
|
|
/* at least RHEL 4 unconditionally writes to the perfctr registers,
|
|
|
|
* so we ignore writes to make it happy.
|
|
|
|
*/
|
|
|
|
case MSR_P6_PERFCTR0:
|
|
|
|
case MSR_P6_PERFCTR1:
|
|
|
|
case MSR_K7_PERFCTR0:
|
|
|
|
case MSR_K7_PERFCTR1:
|
|
|
|
case MSR_K7_PERFCTR2:
|
|
|
|
case MSR_K7_PERFCTR3:
|
|
|
|
pr_unimpl(vcpu, "unimplemented perfctr wrmsr: "
|
|
|
|
"0x%x data 0x%llx\n", msr, data);
|
|
|
|
break;
|
2010-01-17 16:51:22 +03:00
|
|
|
case HV_X64_MSR_GUEST_OS_ID ... HV_X64_MSR_SINT15:
|
|
|
|
if (kvm_hv_msr_partition_wide(msr)) {
|
|
|
|
int r;
|
|
|
|
mutex_lock(&vcpu->kvm->lock);
|
|
|
|
r = set_msr_hyperv_pw(vcpu, msr, data);
|
|
|
|
mutex_unlock(&vcpu->kvm->lock);
|
|
|
|
return r;
|
|
|
|
} else
|
|
|
|
return set_msr_hyperv(vcpu, msr, data);
|
|
|
|
break;
|
2007-10-30 20:44:17 +03:00
|
|
|
default:
|
2009-10-16 02:21:43 +04:00
|
|
|
if (msr && (msr == vcpu->kvm->arch.xen_hvm_config.msr))
|
|
|
|
return xen_hvm_config(vcpu, data);
|
2009-06-25 14:36:49 +04:00
|
|
|
if (!ignore_msrs) {
|
|
|
|
pr_unimpl(vcpu, "unhandled wrmsr: 0x%x data %llx\n",
|
|
|
|
msr, data);
|
|
|
|
return 1;
|
|
|
|
} else {
|
|
|
|
pr_unimpl(vcpu, "ignored wrmsr: 0x%x data %llx\n",
|
|
|
|
msr, data);
|
|
|
|
break;
|
|
|
|
}
|
2007-10-30 20:44:17 +03:00
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(kvm_set_msr_common);
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Reads an msr value (of 'msr_index') into 'pdata'.
|
|
|
|
* Returns 0 on success, non-0 otherwise.
|
|
|
|
* Assumes vcpu_load() was already called.
|
|
|
|
*/
|
|
|
|
int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata)
|
|
|
|
{
|
|
|
|
return kvm_x86_ops->get_msr(vcpu, msr_index, pdata);
|
|
|
|
}
|
|
|
|
|
2008-05-26 21:06:35 +04:00
|
|
|
static int get_msr_mtrr(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
|
|
|
|
{
|
2008-10-09 12:01:54 +04:00
|
|
|
u64 *p = (u64 *)&vcpu->arch.mtrr_state.fixed_ranges;
|
|
|
|
|
2008-05-26 21:06:35 +04:00
|
|
|
if (!msr_mtrr_valid(msr))
|
|
|
|
return 1;
|
|
|
|
|
2008-10-09 12:01:54 +04:00
|
|
|
if (msr == MSR_MTRRdefType)
|
|
|
|
*pdata = vcpu->arch.mtrr_state.def_type +
|
|
|
|
(vcpu->arch.mtrr_state.enabled << 10);
|
|
|
|
else if (msr == MSR_MTRRfix64K_00000)
|
|
|
|
*pdata = p[0];
|
|
|
|
else if (msr == MSR_MTRRfix16K_80000 || msr == MSR_MTRRfix16K_A0000)
|
|
|
|
*pdata = p[1 + msr - MSR_MTRRfix16K_80000];
|
|
|
|
else if (msr >= MSR_MTRRfix4K_C0000 && msr <= MSR_MTRRfix4K_F8000)
|
|
|
|
*pdata = p[3 + msr - MSR_MTRRfix4K_C0000];
|
|
|
|
else if (msr == MSR_IA32_CR_PAT)
|
|
|
|
*pdata = vcpu->arch.pat;
|
|
|
|
else { /* Variable MTRRs */
|
|
|
|
int idx, is_mtrr_mask;
|
|
|
|
u64 *pt;
|
|
|
|
|
|
|
|
idx = (msr - 0x200) / 2;
|
|
|
|
is_mtrr_mask = msr - 0x200 - 2 * idx;
|
|
|
|
if (!is_mtrr_mask)
|
|
|
|
pt =
|
|
|
|
(u64 *)&vcpu->arch.mtrr_state.var_ranges[idx].base_lo;
|
|
|
|
else
|
|
|
|
pt =
|
|
|
|
(u64 *)&vcpu->arch.mtrr_state.var_ranges[idx].mask_lo;
|
|
|
|
*pdata = *pt;
|
|
|
|
}
|
|
|
|
|
2008-05-26 21:06:35 +04:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-05-11 12:48:15 +04:00
|
|
|
static int get_msr_mce(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
|
2007-10-30 20:44:17 +03:00
|
|
|
{
|
|
|
|
u64 data;
|
2009-05-11 12:48:15 +04:00
|
|
|
u64 mcg_cap = vcpu->arch.mcg_cap;
|
|
|
|
unsigned bank_num = mcg_cap & 0xff;
|
2007-10-30 20:44:17 +03:00
|
|
|
|
|
|
|
switch (msr) {
|
|
|
|
case MSR_IA32_P5_MC_ADDR:
|
|
|
|
case MSR_IA32_P5_MC_TYPE:
|
2009-05-11 12:48:15 +04:00
|
|
|
data = 0;
|
|
|
|
break;
|
2007-10-30 20:44:17 +03:00
|
|
|
case MSR_IA32_MCG_CAP:
|
2009-05-11 12:48:15 +04:00
|
|
|
data = vcpu->arch.mcg_cap;
|
|
|
|
break;
|
2008-02-11 22:28:27 +03:00
|
|
|
case MSR_IA32_MCG_CTL:
|
2009-05-11 12:48:15 +04:00
|
|
|
if (!(mcg_cap & MCG_CTL_P))
|
|
|
|
return 1;
|
|
|
|
data = vcpu->arch.mcg_ctl;
|
|
|
|
break;
|
|
|
|
case MSR_IA32_MCG_STATUS:
|
|
|
|
data = vcpu->arch.mcg_status;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
if (msr >= MSR_IA32_MC0_CTL &&
|
|
|
|
msr < MSR_IA32_MC0_CTL + 4 * bank_num) {
|
|
|
|
u32 offset = msr - MSR_IA32_MC0_CTL;
|
|
|
|
data = vcpu->arch.mce_banks[offset];
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
*pdata = data;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2010-01-17 16:51:22 +03:00
|
|
|
static int get_msr_hyperv_pw(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
|
|
|
|
{
|
|
|
|
u64 data = 0;
|
|
|
|
struct kvm *kvm = vcpu->kvm;
|
|
|
|
|
|
|
|
switch (msr) {
|
|
|
|
case HV_X64_MSR_GUEST_OS_ID:
|
|
|
|
data = kvm->arch.hv_guest_os_id;
|
|
|
|
break;
|
|
|
|
case HV_X64_MSR_HYPERCALL:
|
|
|
|
data = kvm->arch.hv_hypercall;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
pr_unimpl(vcpu, "Hyper-V unhandled rdmsr: 0x%x\n", msr);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
*pdata = data;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int get_msr_hyperv(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
|
|
|
|
{
|
|
|
|
u64 data = 0;
|
|
|
|
|
|
|
|
switch (msr) {
|
|
|
|
case HV_X64_MSR_VP_INDEX: {
|
|
|
|
int r;
|
|
|
|
struct kvm_vcpu *v;
|
|
|
|
kvm_for_each_vcpu(r, v, vcpu->kvm)
|
|
|
|
if (v == vcpu)
|
|
|
|
data = r;
|
|
|
|
break;
|
|
|
|
}
|
2010-01-17 16:51:23 +03:00
|
|
|
case HV_X64_MSR_EOI:
|
|
|
|
return kvm_hv_vapic_msr_read(vcpu, APIC_EOI, pdata);
|
|
|
|
case HV_X64_MSR_ICR:
|
|
|
|
return kvm_hv_vapic_msr_read(vcpu, APIC_ICR, pdata);
|
|
|
|
case HV_X64_MSR_TPR:
|
|
|
|
return kvm_hv_vapic_msr_read(vcpu, APIC_TASKPRI, pdata);
|
2010-01-17 16:51:22 +03:00
|
|
|
default:
|
|
|
|
pr_unimpl(vcpu, "Hyper-V unhandled rdmsr: 0x%x\n", msr);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
*pdata = data;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-05-11 12:48:15 +04:00
|
|
|
int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
|
|
|
|
{
|
|
|
|
u64 data;
|
|
|
|
|
|
|
|
switch (msr) {
|
|
|
|
case MSR_IA32_PLATFORM_ID:
|
2007-10-30 20:44:17 +03:00
|
|
|
case MSR_IA32_UCODE_REV:
|
|
|
|
case MSR_IA32_EBL_CR_POWERON:
|
2008-07-22 10:00:45 +04:00
|
|
|
case MSR_IA32_DEBUGCTLMSR:
|
|
|
|
case MSR_IA32_LASTBRANCHFROMIP:
|
|
|
|
case MSR_IA32_LASTBRANCHTOIP:
|
|
|
|
case MSR_IA32_LASTINTFROMIP:
|
|
|
|
case MSR_IA32_LASTINTTOIP:
|
2009-05-14 09:30:10 +04:00
|
|
|
case MSR_K8_SYSCFG:
|
|
|
|
case MSR_K7_HWCR:
|
2008-12-29 18:32:28 +03:00
|
|
|
case MSR_VM_HSAVE_PA:
|
2009-06-30 14:54:28 +04:00
|
|
|
case MSR_P6_PERFCTR0:
|
|
|
|
case MSR_P6_PERFCTR1:
|
2009-03-20 10:09:00 +03:00
|
|
|
case MSR_P6_EVNTSEL0:
|
|
|
|
case MSR_P6_EVNTSEL1:
|
2009-06-15 11:55:34 +04:00
|
|
|
case MSR_K7_EVNTSEL0:
|
2009-06-30 14:54:28 +04:00
|
|
|
case MSR_K7_PERFCTR0:
|
2009-06-24 14:44:34 +04:00
|
|
|
case MSR_K8_INT_PENDING_MSG:
|
2009-06-24 17:37:05 +04:00
|
|
|
case MSR_AMD64_NB_CFG:
|
2009-07-02 17:04:14 +04:00
|
|
|
case MSR_FAM10H_MMIO_CONF_BASE:
|
2007-10-30 20:44:17 +03:00
|
|
|
data = 0;
|
|
|
|
break;
|
2008-05-26 21:06:35 +04:00
|
|
|
case MSR_MTRRcap:
|
|
|
|
data = 0x500 | KVM_NR_VAR_MTRR;
|
|
|
|
break;
|
|
|
|
case 0x200 ... 0x2ff:
|
|
|
|
return get_msr_mtrr(vcpu, msr, pdata);
|
2007-10-30 20:44:17 +03:00
|
|
|
case 0xcd: /* fsb frequency */
|
|
|
|
data = 3;
|
|
|
|
break;
|
|
|
|
case MSR_IA32_APICBASE:
|
|
|
|
data = kvm_get_apic_base(vcpu);
|
|
|
|
break;
|
2009-07-05 18:39:36 +04:00
|
|
|
case APIC_BASE_MSR ... APIC_BASE_MSR + 0x3ff:
|
|
|
|
return kvm_x2apic_msr_read(vcpu, msr, pdata);
|
|
|
|
break;
|
2007-10-30 20:44:17 +03:00
|
|
|
case MSR_IA32_MISC_ENABLE:
|
2007-12-13 18:50:52 +03:00
|
|
|
data = vcpu->arch.ia32_misc_enable_msr;
|
2007-10-30 20:44:17 +03:00
|
|
|
break;
|
2008-02-21 14:11:01 +03:00
|
|
|
case MSR_IA32_PERF_STATUS:
|
|
|
|
/* TSC increment by tick */
|
|
|
|
data = 1000ULL;
|
|
|
|
/* CPU multiplier */
|
|
|
|
data |= (((uint64_t)4ULL) << 40);
|
|
|
|
break;
|
2007-10-30 20:44:17 +03:00
|
|
|
case MSR_EFER:
|
2010-01-21 16:31:50 +03:00
|
|
|
data = vcpu->arch.efer;
|
2007-10-30 20:44:17 +03:00
|
|
|
break;
|
2008-02-15 22:52:47 +03:00
|
|
|
case MSR_KVM_WALL_CLOCK:
|
2010-05-11 20:17:41 +04:00
|
|
|
case MSR_KVM_WALL_CLOCK_NEW:
|
2008-02-15 22:52:47 +03:00
|
|
|
data = vcpu->kvm->arch.wall_clock;
|
|
|
|
break;
|
|
|
|
case MSR_KVM_SYSTEM_TIME:
|
2010-05-11 20:17:41 +04:00
|
|
|
case MSR_KVM_SYSTEM_TIME_NEW:
|
2008-02-15 22:52:47 +03:00
|
|
|
data = vcpu->arch.time;
|
|
|
|
break;
|
2009-05-11 12:48:15 +04:00
|
|
|
case MSR_IA32_P5_MC_ADDR:
|
|
|
|
case MSR_IA32_P5_MC_TYPE:
|
|
|
|
case MSR_IA32_MCG_CAP:
|
|
|
|
case MSR_IA32_MCG_CTL:
|
|
|
|
case MSR_IA32_MCG_STATUS:
|
|
|
|
case MSR_IA32_MC0_CTL ... MSR_IA32_MC0_CTL + 4 * KVM_MAX_MCE_BANKS - 1:
|
|
|
|
return get_msr_mce(vcpu, msr, pdata);
|
2010-01-17 16:51:22 +03:00
|
|
|
case HV_X64_MSR_GUEST_OS_ID ... HV_X64_MSR_SINT15:
|
|
|
|
if (kvm_hv_msr_partition_wide(msr)) {
|
|
|
|
int r;
|
|
|
|
mutex_lock(&vcpu->kvm->lock);
|
|
|
|
r = get_msr_hyperv_pw(vcpu, msr, pdata);
|
|
|
|
mutex_unlock(&vcpu->kvm->lock);
|
|
|
|
return r;
|
|
|
|
} else
|
|
|
|
return get_msr_hyperv(vcpu, msr, pdata);
|
|
|
|
break;
|
2007-10-30 20:44:17 +03:00
|
|
|
default:
|
2009-06-25 14:36:49 +04:00
|
|
|
if (!ignore_msrs) {
|
|
|
|
pr_unimpl(vcpu, "unhandled rdmsr: 0x%x\n", msr);
|
|
|
|
return 1;
|
|
|
|
} else {
|
|
|
|
pr_unimpl(vcpu, "ignored rdmsr: 0x%x\n", msr);
|
|
|
|
data = 0;
|
|
|
|
}
|
|
|
|
break;
|
2007-10-30 20:44:17 +03:00
|
|
|
}
|
|
|
|
*pdata = data;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(kvm_get_msr_common);
|
|
|
|
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
/*
|
|
|
|
* Read or write a bunch of msrs. All parameters are kernel addresses.
|
|
|
|
*
|
|
|
|
* @return number of msrs set successfully.
|
|
|
|
*/
|
|
|
|
static int __msr_io(struct kvm_vcpu *vcpu, struct kvm_msrs *msrs,
|
|
|
|
struct kvm_msr_entry *entries,
|
|
|
|
int (*do_msr)(struct kvm_vcpu *vcpu,
|
|
|
|
unsigned index, u64 *data))
|
|
|
|
{
|
2009-12-23 19:35:25 +03:00
|
|
|
int i, idx;
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
|
2009-12-23 19:35:25 +03:00
|
|
|
idx = srcu_read_lock(&vcpu->kvm->srcu);
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
for (i = 0; i < msrs->nmsrs; ++i)
|
|
|
|
if (do_msr(vcpu, entries[i].index, &entries[i].data))
|
|
|
|
break;
|
2009-12-23 19:35:25 +03:00
|
|
|
srcu_read_unlock(&vcpu->kvm->srcu, idx);
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
|
|
|
|
return i;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Read or write a bunch of msrs. Parameters are user addresses.
|
|
|
|
*
|
|
|
|
* @return number of msrs set successfully.
|
|
|
|
*/
|
|
|
|
static int msr_io(struct kvm_vcpu *vcpu, struct kvm_msrs __user *user_msrs,
|
|
|
|
int (*do_msr)(struct kvm_vcpu *vcpu,
|
|
|
|
unsigned index, u64 *data),
|
|
|
|
int writeback)
|
|
|
|
{
|
|
|
|
struct kvm_msrs msrs;
|
|
|
|
struct kvm_msr_entry *entries;
|
|
|
|
int r, n;
|
|
|
|
unsigned size;
|
|
|
|
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_from_user(&msrs, user_msrs, sizeof msrs))
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
r = -E2BIG;
|
|
|
|
if (msrs.nmsrs >= MAX_IO_MSRS)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
r = -ENOMEM;
|
|
|
|
size = sizeof(struct kvm_msr_entry) * msrs.nmsrs;
|
2010-07-23 00:24:52 +04:00
|
|
|
entries = kmalloc(size, GFP_KERNEL);
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
if (!entries)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_from_user(entries, user_msrs->entries, size))
|
|
|
|
goto out_free;
|
|
|
|
|
|
|
|
r = n = __msr_io(vcpu, &msrs, entries, do_msr);
|
|
|
|
if (r < 0)
|
|
|
|
goto out_free;
|
|
|
|
|
|
|
|
r = -EFAULT;
|
|
|
|
if (writeback && copy_to_user(user_msrs->entries, entries, size))
|
|
|
|
goto out_free;
|
|
|
|
|
|
|
|
r = n;
|
|
|
|
|
|
|
|
out_free:
|
2010-07-23 00:24:52 +04:00
|
|
|
kfree(entries);
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
out:
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2007-11-15 18:07:47 +03:00
|
|
|
int kvm_dev_ioctl_check_extension(long ext)
|
|
|
|
{
|
|
|
|
int r;
|
|
|
|
|
|
|
|
switch (ext) {
|
|
|
|
case KVM_CAP_IRQCHIP:
|
|
|
|
case KVM_CAP_HLT:
|
|
|
|
case KVM_CAP_MMU_SHADOW_CACHE_CONTROL:
|
|
|
|
case KVM_CAP_SET_TSS_ADDR:
|
2007-11-21 18:10:04 +03:00
|
|
|
case KVM_CAP_EXT_CPUID:
|
2009-02-04 19:52:04 +03:00
|
|
|
case KVM_CAP_CLOCKSOURCE:
|
2008-01-28 00:10:22 +03:00
|
|
|
case KVM_CAP_PIT:
|
2008-02-22 20:21:36 +03:00
|
|
|
case KVM_CAP_NOP_IO_DELAY:
|
2008-04-11 20:24:45 +04:00
|
|
|
case KVM_CAP_MP_STATE:
|
2008-07-29 12:30:57 +04:00
|
|
|
case KVM_CAP_SYNC_MMU:
|
2008-12-30 20:55:06 +03:00
|
|
|
case KVM_CAP_REINJECT_CONTROL:
|
2009-02-04 18:28:14 +03:00
|
|
|
case KVM_CAP_IRQ_INJECT_STATUS:
|
2009-03-12 16:45:39 +03:00
|
|
|
case KVM_CAP_ASSIGN_DEV_IRQ:
|
2009-05-20 18:30:49 +04:00
|
|
|
case KVM_CAP_IRQFD:
|
KVM: add ioeventfd support
ioeventfd is a mechanism to register PIO/MMIO regions to trigger an eventfd
signal when written to by a guest. Host userspace can register any
arbitrary IO address with a corresponding eventfd and then pass the eventfd
to a specific end-point of interest for handling.
Normal IO requires a blocking round-trip since the operation may cause
side-effects in the emulated model or may return data to the caller.
Therefore, an IO in KVM traps from the guest to the host, causes a VMX/SVM
"heavy-weight" exit back to userspace, and is ultimately serviced by qemu's
device model synchronously before returning control back to the vcpu.
However, there is a subclass of IO which acts purely as a trigger for
other IO (such as to kick off an out-of-band DMA request, etc). For these
patterns, the synchronous call is particularly expensive since we really
only want to simply get our notification transmitted asychronously and
return as quickly as possible. All the sychronous infrastructure to ensure
proper data-dependencies are met in the normal IO case are just unecessary
overhead for signalling. This adds additional computational load on the
system, as well as latency to the signalling path.
Therefore, we provide a mechanism for registration of an in-kernel trigger
point that allows the VCPU to only require a very brief, lightweight
exit just long enough to signal an eventfd. This also means that any
clients compatible with the eventfd interface (which includes userspace
and kernelspace equally well) can now register to be notified. The end
result should be a more flexible and higher performance notification API
for the backend KVM hypervisor and perhipheral components.
To test this theory, we built a test-harness called "doorbell". This
module has a function called "doorbell_ring()" which simply increments a
counter for each time the doorbell is signaled. It supports signalling
from either an eventfd, or an ioctl().
We then wired up two paths to the doorbell: One via QEMU via a registered
io region and through the doorbell ioctl(). The other is direct via
ioeventfd.
You can download this test harness here:
ftp://ftp.novell.com/dev/ghaskins/doorbell.tar.bz2
The measured results are as follows:
qemu-mmio: 110000 iops, 9.09us rtt
ioeventfd-mmio: 200100 iops, 5.00us rtt
ioeventfd-pio: 367300 iops, 2.72us rtt
I didn't measure qemu-pio, because I have to figure out how to register a
PIO region with qemu's device model, and I got lazy. However, for now we
can extrapolate based on the data from the NULLIO runs of +2.56us for MMIO,
and -350ns for HC, we get:
qemu-pio: 153139 iops, 6.53us rtt
ioeventfd-hc: 412585 iops, 2.37us rtt
these are just for fun, for now, until I can gather more data.
Here is a graph for your convenience:
http://developer.novell.com/wiki/images/7/76/Iofd-chart.png
The conclusion to draw is that we save about 4us by skipping the userspace
hop.
--------------------
Signed-off-by: Gregory Haskins <ghaskins@novell.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-07-08 01:08:49 +04:00
|
|
|
case KVM_CAP_IOEVENTFD:
|
2009-05-15 00:42:53 +04:00
|
|
|
case KVM_CAP_PIT2:
|
2009-07-07 19:50:38 +04:00
|
|
|
case KVM_CAP_PIT_STATE2:
|
2009-07-21 06:42:48 +04:00
|
|
|
case KVM_CAP_SET_IDENTITY_MAP_ADDR:
|
2009-10-16 02:21:43 +04:00
|
|
|
case KVM_CAP_XEN_HVM:
|
2009-10-16 23:28:36 +04:00
|
|
|
case KVM_CAP_ADJUST_CLOCK:
|
2009-11-12 03:04:25 +03:00
|
|
|
case KVM_CAP_VCPU_EVENTS:
|
2010-01-17 16:51:22 +03:00
|
|
|
case KVM_CAP_HYPERV:
|
2010-01-17 16:51:23 +03:00
|
|
|
case KVM_CAP_HYPERV_VAPIC:
|
2010-01-17 16:51:24 +03:00
|
|
|
case KVM_CAP_HYPERV_SPIN:
|
2010-01-29 09:38:44 +03:00
|
|
|
case KVM_CAP_PCI_SEGMENT:
|
2010-02-15 12:45:43 +03:00
|
|
|
case KVM_CAP_DEBUGREGS:
|
2010-02-23 19:47:57 +03:00
|
|
|
case KVM_CAP_X86_ROBUST_SINGLESTEP:
|
2010-06-13 13:29:39 +04:00
|
|
|
case KVM_CAP_XSAVE:
|
2007-11-15 18:07:47 +03:00
|
|
|
r = 1;
|
|
|
|
break;
|
2008-05-30 18:05:55 +04:00
|
|
|
case KVM_CAP_COALESCED_MMIO:
|
|
|
|
r = KVM_COALESCED_MMIO_PAGE_OFFSET;
|
|
|
|
break;
|
2007-12-26 14:57:04 +03:00
|
|
|
case KVM_CAP_VAPIC:
|
|
|
|
r = !kvm_x86_ops->cpu_has_accelerated_tpr();
|
|
|
|
break;
|
2008-02-20 12:53:16 +03:00
|
|
|
case KVM_CAP_NR_VCPUS:
|
|
|
|
r = KVM_MAX_VCPUS;
|
|
|
|
break;
|
2008-02-20 12:59:20 +03:00
|
|
|
case KVM_CAP_NR_MEMSLOTS:
|
|
|
|
r = KVM_MEMORY_SLOTS;
|
|
|
|
break;
|
2009-10-02 02:28:39 +04:00
|
|
|
case KVM_CAP_PV_MMU: /* obsolete */
|
|
|
|
r = 0;
|
2008-02-22 20:21:37 +03:00
|
|
|
break;
|
2008-09-14 04:48:28 +04:00
|
|
|
case KVM_CAP_IOMMU:
|
2008-12-03 16:43:34 +03:00
|
|
|
r = iommu_found();
|
2008-09-14 04:48:28 +04:00
|
|
|
break;
|
2009-05-11 12:48:15 +04:00
|
|
|
case KVM_CAP_MCE:
|
|
|
|
r = KVM_MAX_MCE_BANKS;
|
|
|
|
break;
|
2010-06-13 13:29:39 +04:00
|
|
|
case KVM_CAP_XCRS:
|
|
|
|
r = cpu_has_xsave;
|
|
|
|
break;
|
2007-11-15 18:07:47 +03:00
|
|
|
default:
|
|
|
|
r = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return r;
|
|
|
|
|
|
|
|
}
|
|
|
|
|
2007-10-10 19:16:19 +04:00
|
|
|
long kvm_arch_dev_ioctl(struct file *filp,
|
|
|
|
unsigned int ioctl, unsigned long arg)
|
|
|
|
{
|
|
|
|
void __user *argp = (void __user *)arg;
|
|
|
|
long r;
|
|
|
|
|
|
|
|
switch (ioctl) {
|
|
|
|
case KVM_GET_MSR_INDEX_LIST: {
|
|
|
|
struct kvm_msr_list __user *user_msr_list = argp;
|
|
|
|
struct kvm_msr_list msr_list;
|
|
|
|
unsigned n;
|
|
|
|
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_from_user(&msr_list, user_msr_list, sizeof msr_list))
|
|
|
|
goto out;
|
|
|
|
n = msr_list.nmsrs;
|
|
|
|
msr_list.nmsrs = num_msrs_to_save + ARRAY_SIZE(emulated_msrs);
|
|
|
|
if (copy_to_user(user_msr_list, &msr_list, sizeof msr_list))
|
|
|
|
goto out;
|
|
|
|
r = -E2BIG;
|
2009-07-02 23:45:47 +04:00
|
|
|
if (n < msr_list.nmsrs)
|
2007-10-10 19:16:19 +04:00
|
|
|
goto out;
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_to_user(user_msr_list->indices, &msrs_to_save,
|
|
|
|
num_msrs_to_save * sizeof(u32)))
|
|
|
|
goto out;
|
2009-07-02 23:45:47 +04:00
|
|
|
if (copy_to_user(user_msr_list->indices + num_msrs_to_save,
|
2007-10-10 19:16:19 +04:00
|
|
|
&emulated_msrs,
|
|
|
|
ARRAY_SIZE(emulated_msrs) * sizeof(u32)))
|
|
|
|
goto out;
|
|
|
|
r = 0;
|
|
|
|
break;
|
|
|
|
}
|
2008-02-11 19:37:23 +03:00
|
|
|
case KVM_GET_SUPPORTED_CPUID: {
|
|
|
|
struct kvm_cpuid2 __user *cpuid_arg = argp;
|
|
|
|
struct kvm_cpuid2 cpuid;
|
|
|
|
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_from_user(&cpuid, cpuid_arg, sizeof cpuid))
|
|
|
|
goto out;
|
|
|
|
r = kvm_dev_ioctl_get_supported_cpuid(&cpuid,
|
2009-01-14 19:56:00 +03:00
|
|
|
cpuid_arg->entries);
|
2008-02-11 19:37:23 +03:00
|
|
|
if (r)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_to_user(cpuid_arg, &cpuid, sizeof cpuid))
|
|
|
|
goto out;
|
|
|
|
r = 0;
|
|
|
|
break;
|
|
|
|
}
|
2009-05-11 12:48:15 +04:00
|
|
|
case KVM_X86_GET_MCE_CAP_SUPPORTED: {
|
|
|
|
u64 mce_cap;
|
|
|
|
|
|
|
|
mce_cap = KVM_MCE_CAP_SUPPORTED;
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_to_user(argp, &mce_cap, sizeof mce_cap))
|
|
|
|
goto out;
|
|
|
|
r = 0;
|
|
|
|
break;
|
|
|
|
}
|
2007-10-10 19:16:19 +04:00
|
|
|
default:
|
|
|
|
r = -EINVAL;
|
|
|
|
}
|
|
|
|
out:
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
|
|
|
|
{
|
|
|
|
kvm_x86_ops->vcpu_load(vcpu, cpu);
|
2009-10-10 06:26:08 +04:00
|
|
|
if (unlikely(per_cpu(cpu_tsc_khz, cpu) == 0)) {
|
|
|
|
unsigned long khz = cpufreq_quick_get(cpu);
|
|
|
|
if (!khz)
|
|
|
|
khz = tsc_khz;
|
|
|
|
per_cpu(cpu_tsc_khz, cpu) = khz;
|
|
|
|
}
|
2009-02-04 19:52:04 +03:00
|
|
|
kvm_request_guest_time_update(vcpu);
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
2009-12-30 13:40:26 +03:00
|
|
|
kvm_x86_ops->vcpu_put(vcpu);
|
2010-05-03 17:05:44 +04:00
|
|
|
kvm_put_guest_fpu(vcpu);
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
}
|
|
|
|
|
2007-11-21 18:10:04 +03:00
|
|
|
static int is_efer_nx(void)
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
{
|
2009-05-03 19:50:55 +04:00
|
|
|
unsigned long long efer = 0;
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
|
2009-05-03 19:50:55 +04:00
|
|
|
rdmsrl_safe(MSR_EFER, &efer);
|
2007-11-21 18:10:04 +03:00
|
|
|
return efer & EFER_NX;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void cpuid_fix_nx_cap(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
struct kvm_cpuid_entry2 *e, *entry;
|
|
|
|
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
entry = NULL;
|
2007-12-13 18:50:52 +03:00
|
|
|
for (i = 0; i < vcpu->arch.cpuid_nent; ++i) {
|
|
|
|
e = &vcpu->arch.cpuid_entries[i];
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
if (e->function == 0x80000001) {
|
|
|
|
entry = e;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
2007-11-21 18:10:04 +03:00
|
|
|
if (entry && (entry->edx & (1 << 20)) && !is_efer_nx()) {
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
entry->edx &= ~(1 << 20);
|
|
|
|
printk(KERN_INFO "kvm: guest NX capability removed\n");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2007-11-21 18:10:04 +03:00
|
|
|
/* when an old userspace process fills a new kernel module */
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
static int kvm_vcpu_ioctl_set_cpuid(struct kvm_vcpu *vcpu,
|
|
|
|
struct kvm_cpuid *cpuid,
|
|
|
|
struct kvm_cpuid_entry __user *entries)
|
2007-11-21 18:10:04 +03:00
|
|
|
{
|
|
|
|
int r, i;
|
|
|
|
struct kvm_cpuid_entry *cpuid_entries;
|
|
|
|
|
|
|
|
r = -E2BIG;
|
|
|
|
if (cpuid->nent > KVM_MAX_CPUID_ENTRIES)
|
|
|
|
goto out;
|
|
|
|
r = -ENOMEM;
|
|
|
|
cpuid_entries = vmalloc(sizeof(struct kvm_cpuid_entry) * cpuid->nent);
|
|
|
|
if (!cpuid_entries)
|
|
|
|
goto out;
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_from_user(cpuid_entries, entries,
|
|
|
|
cpuid->nent * sizeof(struct kvm_cpuid_entry)))
|
|
|
|
goto out_free;
|
|
|
|
for (i = 0; i < cpuid->nent; i++) {
|
2007-12-13 18:50:52 +03:00
|
|
|
vcpu->arch.cpuid_entries[i].function = cpuid_entries[i].function;
|
|
|
|
vcpu->arch.cpuid_entries[i].eax = cpuid_entries[i].eax;
|
|
|
|
vcpu->arch.cpuid_entries[i].ebx = cpuid_entries[i].ebx;
|
|
|
|
vcpu->arch.cpuid_entries[i].ecx = cpuid_entries[i].ecx;
|
|
|
|
vcpu->arch.cpuid_entries[i].edx = cpuid_entries[i].edx;
|
|
|
|
vcpu->arch.cpuid_entries[i].index = 0;
|
|
|
|
vcpu->arch.cpuid_entries[i].flags = 0;
|
|
|
|
vcpu->arch.cpuid_entries[i].padding[0] = 0;
|
|
|
|
vcpu->arch.cpuid_entries[i].padding[1] = 0;
|
|
|
|
vcpu->arch.cpuid_entries[i].padding[2] = 0;
|
|
|
|
}
|
|
|
|
vcpu->arch.cpuid_nent = cpuid->nent;
|
2007-11-21 18:10:04 +03:00
|
|
|
cpuid_fix_nx_cap(vcpu);
|
|
|
|
r = 0;
|
2009-07-05 18:39:35 +04:00
|
|
|
kvm_apic_set_version(vcpu);
|
2009-12-18 11:48:46 +03:00
|
|
|
kvm_x86_ops->cpuid_update(vcpu);
|
2010-06-10 07:27:12 +04:00
|
|
|
update_cpuid(vcpu);
|
2007-11-21 18:10:04 +03:00
|
|
|
|
|
|
|
out_free:
|
|
|
|
vfree(cpuid_entries);
|
|
|
|
out:
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int kvm_vcpu_ioctl_set_cpuid2(struct kvm_vcpu *vcpu,
|
2009-01-14 19:56:00 +03:00
|
|
|
struct kvm_cpuid2 *cpuid,
|
|
|
|
struct kvm_cpuid_entry2 __user *entries)
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
{
|
|
|
|
int r;
|
|
|
|
|
|
|
|
r = -E2BIG;
|
|
|
|
if (cpuid->nent > KVM_MAX_CPUID_ENTRIES)
|
|
|
|
goto out;
|
|
|
|
r = -EFAULT;
|
2007-12-13 18:50:52 +03:00
|
|
|
if (copy_from_user(&vcpu->arch.cpuid_entries, entries,
|
2007-11-21 18:10:04 +03:00
|
|
|
cpuid->nent * sizeof(struct kvm_cpuid_entry2)))
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
goto out;
|
2007-12-13 18:50:52 +03:00
|
|
|
vcpu->arch.cpuid_nent = cpuid->nent;
|
2009-07-05 18:39:35 +04:00
|
|
|
kvm_apic_set_version(vcpu);
|
2009-12-18 11:48:46 +03:00
|
|
|
kvm_x86_ops->cpuid_update(vcpu);
|
2010-06-10 07:27:12 +04:00
|
|
|
update_cpuid(vcpu);
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
return 0;
|
|
|
|
|
|
|
|
out:
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2007-11-21 18:10:04 +03:00
|
|
|
static int kvm_vcpu_ioctl_get_cpuid2(struct kvm_vcpu *vcpu,
|
2009-01-14 19:56:00 +03:00
|
|
|
struct kvm_cpuid2 *cpuid,
|
|
|
|
struct kvm_cpuid_entry2 __user *entries)
|
2007-11-21 18:10:04 +03:00
|
|
|
{
|
|
|
|
int r;
|
|
|
|
|
|
|
|
r = -E2BIG;
|
2007-12-13 18:50:52 +03:00
|
|
|
if (cpuid->nent < vcpu->arch.cpuid_nent)
|
2007-11-21 18:10:04 +03:00
|
|
|
goto out;
|
|
|
|
r = -EFAULT;
|
2007-12-13 18:50:52 +03:00
|
|
|
if (copy_to_user(entries, &vcpu->arch.cpuid_entries,
|
2009-01-14 19:56:00 +03:00
|
|
|
vcpu->arch.cpuid_nent * sizeof(struct kvm_cpuid_entry2)))
|
2007-11-21 18:10:04 +03:00
|
|
|
goto out;
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
out:
|
2007-12-13 18:50:52 +03:00
|
|
|
cpuid->nent = vcpu->arch.cpuid_nent;
|
2007-11-21 18:10:04 +03:00
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void do_cpuid_1_ent(struct kvm_cpuid_entry2 *entry, u32 function,
|
2009-01-14 19:56:00 +03:00
|
|
|
u32 index)
|
2007-11-21 18:10:04 +03:00
|
|
|
{
|
|
|
|
entry->function = function;
|
|
|
|
entry->index = index;
|
|
|
|
cpuid_count(entry->function, entry->index,
|
2009-01-14 19:56:00 +03:00
|
|
|
&entry->eax, &entry->ebx, &entry->ecx, &entry->edx);
|
2007-11-21 18:10:04 +03:00
|
|
|
entry->flags = 0;
|
|
|
|
}
|
|
|
|
|
2009-05-10 14:55:35 +04:00
|
|
|
#define F(x) bit(X86_FEATURE_##x)
|
|
|
|
|
2007-11-21 18:10:04 +03:00
|
|
|
static void do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
|
|
|
|
u32 index, int *nent, int maxnent)
|
|
|
|
{
|
2009-05-10 14:55:35 +04:00
|
|
|
unsigned f_nx = is_efer_nx() ? F(NX) : 0;
|
2007-11-21 18:10:04 +03:00
|
|
|
#ifdef CONFIG_X86_64
|
2010-01-05 14:02:27 +03:00
|
|
|
unsigned f_gbpages = (kvm_x86_ops->get_lpage_level() == PT_PDPE_LEVEL)
|
|
|
|
? F(GBPAGES) : 0;
|
2009-05-10 14:55:35 +04:00
|
|
|
unsigned f_lm = F(LM);
|
|
|
|
#else
|
2010-01-05 14:02:27 +03:00
|
|
|
unsigned f_gbpages = 0;
|
2009-05-10 14:55:35 +04:00
|
|
|
unsigned f_lm = 0;
|
2007-11-21 18:10:04 +03:00
|
|
|
#endif
|
2009-12-18 11:48:47 +03:00
|
|
|
unsigned f_rdtscp = kvm_x86_ops->rdtscp_supported() ? F(RDTSCP) : 0;
|
2009-05-10 14:55:35 +04:00
|
|
|
|
|
|
|
/* cpuid 1.edx */
|
|
|
|
const u32 kvm_supported_word0_x86_features =
|
|
|
|
F(FPU) | F(VME) | F(DE) | F(PSE) |
|
|
|
|
F(TSC) | F(MSR) | F(PAE) | F(MCE) |
|
|
|
|
F(CX8) | F(APIC) | 0 /* Reserved */ | F(SEP) |
|
|
|
|
F(MTRR) | F(PGE) | F(MCA) | F(CMOV) |
|
|
|
|
F(PAT) | F(PSE36) | 0 /* PSN */ | F(CLFLSH) |
|
|
|
|
0 /* Reserved, DS, ACPI */ | F(MMX) |
|
|
|
|
F(FXSR) | F(XMM) | F(XMM2) | F(SELFSNOOP) |
|
|
|
|
0 /* HTT, TM, Reserved, PBE */;
|
|
|
|
/* cpuid 0x80000001.edx */
|
|
|
|
const u32 kvm_supported_word1_x86_features =
|
|
|
|
F(FPU) | F(VME) | F(DE) | F(PSE) |
|
|
|
|
F(TSC) | F(MSR) | F(PAE) | F(MCE) |
|
|
|
|
F(CX8) | F(APIC) | 0 /* Reserved */ | F(SYSCALL) |
|
|
|
|
F(MTRR) | F(PGE) | F(MCA) | F(CMOV) |
|
|
|
|
F(PAT) | F(PSE36) | 0 /* Reserved */ |
|
|
|
|
f_nx | 0 /* Reserved */ | F(MMXEXT) | F(MMX) |
|
2009-12-18 11:48:47 +03:00
|
|
|
F(FXSR) | F(FXSR_OPT) | f_gbpages | f_rdtscp |
|
2009-05-10 14:55:35 +04:00
|
|
|
0 /* Reserved */ | f_lm | F(3DNOWEXT) | F(3DNOW);
|
|
|
|
/* cpuid 1.ecx */
|
|
|
|
const u32 kvm_supported_word4_x86_features =
|
2009-05-10 15:41:56 +04:00
|
|
|
F(XMM3) | 0 /* Reserved, DTES64, MONITOR */ |
|
|
|
|
0 /* DS-CPL, VMX, SMX, EST */ |
|
|
|
|
0 /* TM2 */ | F(SSSE3) | 0 /* CNXT-ID */ | 0 /* Reserved */ |
|
|
|
|
0 /* Reserved */ | F(CX16) | 0 /* xTPR Update, PDCM */ |
|
|
|
|
0 /* Reserved, DCA */ | F(XMM4_1) |
|
2009-07-05 18:39:36 +04:00
|
|
|
F(XMM4_2) | F(X2APIC) | F(MOVBE) | F(POPCNT) |
|
2010-06-10 07:27:12 +04:00
|
|
|
0 /* Reserved, AES */ | F(XSAVE) | 0 /* OSXSAVE */;
|
2009-05-10 14:55:35 +04:00
|
|
|
/* cpuid 0x80000001.ecx */
|
2007-11-21 18:10:04 +03:00
|
|
|
const u32 kvm_supported_word6_x86_features =
|
2009-05-10 14:55:35 +04:00
|
|
|
F(LAHF_LM) | F(CMP_LEGACY) | F(SVM) | 0 /* ExtApicSpace */ |
|
|
|
|
F(CR8_LEGACY) | F(ABM) | F(SSE4A) | F(MISALIGNSSE) |
|
|
|
|
F(3DNOWPREFETCH) | 0 /* OSVW */ | 0 /* IBS */ | F(SSE5) |
|
|
|
|
0 /* SKINIT */ | 0 /* WDT */;
|
2007-11-21 18:10:04 +03:00
|
|
|
|
2009-01-14 19:56:00 +03:00
|
|
|
/* all calls to cpuid_count() should be made on the same cpu */
|
2007-11-21 18:10:04 +03:00
|
|
|
get_cpu();
|
|
|
|
do_cpuid_1_ent(entry, function, index);
|
|
|
|
++*nent;
|
|
|
|
|
|
|
|
switch (function) {
|
|
|
|
case 0:
|
2010-06-10 07:27:12 +04:00
|
|
|
entry->eax = min(entry->eax, (u32)0xd);
|
2007-11-21 18:10:04 +03:00
|
|
|
break;
|
|
|
|
case 1:
|
|
|
|
entry->edx &= kvm_supported_word0_x86_features;
|
2009-05-10 14:55:35 +04:00
|
|
|
entry->ecx &= kvm_supported_word4_x86_features;
|
2009-07-12 17:10:55 +04:00
|
|
|
/* we support x2apic emulation even if host does not support
|
|
|
|
* it since we emulate x2apic in software */
|
|
|
|
entry->ecx |= F(X2APIC);
|
2007-11-21 18:10:04 +03:00
|
|
|
break;
|
|
|
|
/* function 2 entries are STATEFUL. That is, repeated cpuid commands
|
|
|
|
* may return different values. This forces us to get_cpu() before
|
|
|
|
* issuing the first command, and also to emulate this annoying behavior
|
|
|
|
* in kvm_emulate_cpuid() using KVM_CPUID_FLAG_STATE_READ_NEXT */
|
|
|
|
case 2: {
|
|
|
|
int t, times = entry->eax & 0xff;
|
|
|
|
|
|
|
|
entry->flags |= KVM_CPUID_FLAG_STATEFUL_FUNC;
|
2008-11-06 02:56:21 +03:00
|
|
|
entry->flags |= KVM_CPUID_FLAG_STATE_READ_NEXT;
|
2007-11-21 18:10:04 +03:00
|
|
|
for (t = 1; t < times && *nent < maxnent; ++t) {
|
|
|
|
do_cpuid_1_ent(&entry[t], function, 0);
|
|
|
|
entry[t].flags |= KVM_CPUID_FLAG_STATEFUL_FUNC;
|
|
|
|
++*nent;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
/* function 4 and 0xb have additional index. */
|
|
|
|
case 4: {
|
2008-02-19 21:25:50 +03:00
|
|
|
int i, cache_type;
|
2007-11-21 18:10:04 +03:00
|
|
|
|
|
|
|
entry->flags |= KVM_CPUID_FLAG_SIGNIFCANT_INDEX;
|
|
|
|
/* read more entries until cache_type is zero */
|
2008-02-19 21:25:50 +03:00
|
|
|
for (i = 1; *nent < maxnent; ++i) {
|
|
|
|
cache_type = entry[i - 1].eax & 0x1f;
|
2007-11-21 18:10:04 +03:00
|
|
|
if (!cache_type)
|
|
|
|
break;
|
2008-02-19 21:25:50 +03:00
|
|
|
do_cpuid_1_ent(&entry[i], function, i);
|
|
|
|
entry[i].flags |=
|
2007-11-21 18:10:04 +03:00
|
|
|
KVM_CPUID_FLAG_SIGNIFCANT_INDEX;
|
|
|
|
++*nent;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case 0xb: {
|
2008-02-19 21:25:50 +03:00
|
|
|
int i, level_type;
|
2007-11-21 18:10:04 +03:00
|
|
|
|
|
|
|
entry->flags |= KVM_CPUID_FLAG_SIGNIFCANT_INDEX;
|
|
|
|
/* read more entries until level_type is zero */
|
2008-02-19 21:25:50 +03:00
|
|
|
for (i = 1; *nent < maxnent; ++i) {
|
2008-11-06 02:37:36 +03:00
|
|
|
level_type = entry[i - 1].ecx & 0xff00;
|
2007-11-21 18:10:04 +03:00
|
|
|
if (!level_type)
|
|
|
|
break;
|
2008-02-19 21:25:50 +03:00
|
|
|
do_cpuid_1_ent(&entry[i], function, i);
|
|
|
|
entry[i].flags |=
|
2007-11-21 18:10:04 +03:00
|
|
|
KVM_CPUID_FLAG_SIGNIFCANT_INDEX;
|
|
|
|
++*nent;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
2010-06-10 07:27:12 +04:00
|
|
|
case 0xd: {
|
|
|
|
int i;
|
|
|
|
|
|
|
|
entry->flags |= KVM_CPUID_FLAG_SIGNIFCANT_INDEX;
|
|
|
|
for (i = 1; *nent < maxnent; ++i) {
|
|
|
|
if (entry[i - 1].eax == 0 && i != 2)
|
|
|
|
break;
|
|
|
|
do_cpuid_1_ent(&entry[i], function, i);
|
|
|
|
entry[i].flags |=
|
|
|
|
KVM_CPUID_FLAG_SIGNIFCANT_INDEX;
|
|
|
|
++*nent;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
2010-05-11 20:17:43 +04:00
|
|
|
case KVM_CPUID_SIGNATURE: {
|
|
|
|
char signature[12] = "KVMKVMKVM\0\0";
|
|
|
|
u32 *sigptr = (u32 *)signature;
|
|
|
|
entry->eax = 0;
|
|
|
|
entry->ebx = sigptr[0];
|
|
|
|
entry->ecx = sigptr[1];
|
|
|
|
entry->edx = sigptr[2];
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case KVM_CPUID_FEATURES:
|
|
|
|
entry->eax = (1 << KVM_FEATURE_CLOCKSOURCE) |
|
|
|
|
(1 << KVM_FEATURE_NOP_IO_DELAY) |
|
2010-05-11 20:17:46 +04:00
|
|
|
(1 << KVM_FEATURE_CLOCKSOURCE2) |
|
|
|
|
(1 << KVM_FEATURE_CLOCKSOURCE_STABLE_BIT);
|
2010-05-11 20:17:43 +04:00
|
|
|
entry->ebx = 0;
|
|
|
|
entry->ecx = 0;
|
|
|
|
entry->edx = 0;
|
|
|
|
break;
|
2007-11-21 18:10:04 +03:00
|
|
|
case 0x80000000:
|
|
|
|
entry->eax = min(entry->eax, 0x8000001a);
|
|
|
|
break;
|
|
|
|
case 0x80000001:
|
|
|
|
entry->edx &= kvm_supported_word1_x86_features;
|
|
|
|
entry->ecx &= kvm_supported_word6_x86_features;
|
|
|
|
break;
|
|
|
|
}
|
2010-04-22 14:33:11 +04:00
|
|
|
|
|
|
|
kvm_x86_ops->set_supported_cpuid(function, entry);
|
|
|
|
|
2007-11-21 18:10:04 +03:00
|
|
|
put_cpu();
|
|
|
|
}
|
|
|
|
|
2009-05-10 14:55:35 +04:00
|
|
|
#undef F
|
|
|
|
|
2008-02-11 19:37:23 +03:00
|
|
|
static int kvm_dev_ioctl_get_supported_cpuid(struct kvm_cpuid2 *cpuid,
|
2009-01-14 19:56:00 +03:00
|
|
|
struct kvm_cpuid_entry2 __user *entries)
|
2007-11-21 18:10:04 +03:00
|
|
|
{
|
|
|
|
struct kvm_cpuid_entry2 *cpuid_entries;
|
|
|
|
int limit, nent = 0, r = -E2BIG;
|
|
|
|
u32 func;
|
|
|
|
|
|
|
|
if (cpuid->nent < 1)
|
|
|
|
goto out;
|
2009-10-04 18:45:13 +04:00
|
|
|
if (cpuid->nent > KVM_MAX_CPUID_ENTRIES)
|
|
|
|
cpuid->nent = KVM_MAX_CPUID_ENTRIES;
|
2007-11-21 18:10:04 +03:00
|
|
|
r = -ENOMEM;
|
|
|
|
cpuid_entries = vmalloc(sizeof(struct kvm_cpuid_entry2) * cpuid->nent);
|
|
|
|
if (!cpuid_entries)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
do_cpuid_ent(&cpuid_entries[0], 0, 0, &nent, cpuid->nent);
|
|
|
|
limit = cpuid_entries[0].eax;
|
|
|
|
for (func = 1; func <= limit && nent < cpuid->nent; ++func)
|
|
|
|
do_cpuid_ent(&cpuid_entries[nent], func, 0,
|
2009-01-14 19:56:00 +03:00
|
|
|
&nent, cpuid->nent);
|
2007-11-21 18:10:04 +03:00
|
|
|
r = -E2BIG;
|
|
|
|
if (nent >= cpuid->nent)
|
|
|
|
goto out_free;
|
|
|
|
|
|
|
|
do_cpuid_ent(&cpuid_entries[nent], 0x80000000, 0, &nent, cpuid->nent);
|
|
|
|
limit = cpuid_entries[nent - 1].eax;
|
|
|
|
for (func = 0x80000001; func <= limit && nent < cpuid->nent; ++func)
|
|
|
|
do_cpuid_ent(&cpuid_entries[nent], func, 0,
|
2009-01-14 19:56:00 +03:00
|
|
|
&nent, cpuid->nent);
|
2010-05-11 20:17:43 +04:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
r = -E2BIG;
|
|
|
|
if (nent >= cpuid->nent)
|
|
|
|
goto out_free;
|
|
|
|
|
|
|
|
do_cpuid_ent(&cpuid_entries[nent], KVM_CPUID_SIGNATURE, 0, &nent,
|
|
|
|
cpuid->nent);
|
|
|
|
|
|
|
|
r = -E2BIG;
|
|
|
|
if (nent >= cpuid->nent)
|
|
|
|
goto out_free;
|
|
|
|
|
|
|
|
do_cpuid_ent(&cpuid_entries[nent], KVM_CPUID_FEATURES, 0, &nent,
|
|
|
|
cpuid->nent);
|
|
|
|
|
2009-05-12 15:36:44 +04:00
|
|
|
r = -E2BIG;
|
|
|
|
if (nent >= cpuid->nent)
|
|
|
|
goto out_free;
|
|
|
|
|
2007-11-21 18:10:04 +03:00
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_to_user(entries, cpuid_entries,
|
2009-01-14 19:56:00 +03:00
|
|
|
nent * sizeof(struct kvm_cpuid_entry2)))
|
2007-11-21 18:10:04 +03:00
|
|
|
goto out_free;
|
|
|
|
cpuid->nent = nent;
|
|
|
|
r = 0;
|
|
|
|
|
|
|
|
out_free:
|
|
|
|
vfree(cpuid_entries);
|
|
|
|
out:
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
static int kvm_vcpu_ioctl_get_lapic(struct kvm_vcpu *vcpu,
|
|
|
|
struct kvm_lapic_state *s)
|
|
|
|
{
|
2007-12-13 18:50:52 +03:00
|
|
|
memcpy(s->regs, vcpu->arch.apic->regs, sizeof *s);
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int kvm_vcpu_ioctl_set_lapic(struct kvm_vcpu *vcpu,
|
|
|
|
struct kvm_lapic_state *s)
|
|
|
|
{
|
2007-12-13 18:50:52 +03:00
|
|
|
memcpy(vcpu->arch.apic->regs, s->regs, sizeof *s);
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
kvm_apic_post_state_restore(vcpu);
|
2009-08-09 16:17:40 +04:00
|
|
|
update_cr8_intercept(vcpu);
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2007-11-20 23:36:41 +03:00
|
|
|
static int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu,
|
|
|
|
struct kvm_interrupt *irq)
|
|
|
|
{
|
|
|
|
if (irq->irq < 0 || irq->irq >= 256)
|
|
|
|
return -EINVAL;
|
|
|
|
if (irqchip_in_kernel(vcpu->kvm))
|
|
|
|
return -ENXIO;
|
|
|
|
|
2009-05-11 14:35:50 +04:00
|
|
|
kvm_queue_interrupt(vcpu, irq->irq, false);
|
2007-11-20 23:36:41 +03:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2008-09-26 11:30:55 +04:00
|
|
|
static int kvm_vcpu_ioctl_nmi(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
kvm_inject_nmi(vcpu);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2007-10-22 18:50:39 +04:00
|
|
|
static int vcpu_ioctl_tpr_access_reporting(struct kvm_vcpu *vcpu,
|
|
|
|
struct kvm_tpr_access_ctl *tac)
|
|
|
|
{
|
|
|
|
if (tac->flags)
|
|
|
|
return -EINVAL;
|
|
|
|
vcpu->arch.tpr_access_reporting = !!tac->enabled;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-05-11 12:48:15 +04:00
|
|
|
static int kvm_vcpu_ioctl_x86_setup_mce(struct kvm_vcpu *vcpu,
|
|
|
|
u64 mcg_cap)
|
|
|
|
{
|
|
|
|
int r;
|
|
|
|
unsigned bank_num = mcg_cap & 0xff, bank;
|
|
|
|
|
|
|
|
r = -EINVAL;
|
2009-10-23 11:37:00 +04:00
|
|
|
if (!bank_num || bank_num >= KVM_MAX_MCE_BANKS)
|
2009-05-11 12:48:15 +04:00
|
|
|
goto out;
|
|
|
|
if (mcg_cap & ~(KVM_MCE_CAP_SUPPORTED | 0xff | 0xff0000))
|
|
|
|
goto out;
|
|
|
|
r = 0;
|
|
|
|
vcpu->arch.mcg_cap = mcg_cap;
|
|
|
|
/* Init IA32_MCG_CTL to all 1s */
|
|
|
|
if (mcg_cap & MCG_CTL_P)
|
|
|
|
vcpu->arch.mcg_ctl = ~(u64)0;
|
|
|
|
/* Init IA32_MCi_CTL to all 1s */
|
|
|
|
for (bank = 0; bank < bank_num; bank++)
|
|
|
|
vcpu->arch.mce_banks[bank*4] = ~(u64)0;
|
|
|
|
out:
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int kvm_vcpu_ioctl_x86_set_mce(struct kvm_vcpu *vcpu,
|
|
|
|
struct kvm_x86_mce *mce)
|
|
|
|
{
|
|
|
|
u64 mcg_cap = vcpu->arch.mcg_cap;
|
|
|
|
unsigned bank_num = mcg_cap & 0xff;
|
|
|
|
u64 *banks = vcpu->arch.mce_banks;
|
|
|
|
|
|
|
|
if (mce->bank >= bank_num || !(mce->status & MCI_STATUS_VAL))
|
|
|
|
return -EINVAL;
|
|
|
|
/*
|
|
|
|
* if IA32_MCG_CTL is not all 1s, the uncorrected error
|
|
|
|
* reporting is disabled
|
|
|
|
*/
|
|
|
|
if ((mce->status & MCI_STATUS_UC) && (mcg_cap & MCG_CTL_P) &&
|
|
|
|
vcpu->arch.mcg_ctl != ~(u64)0)
|
|
|
|
return 0;
|
|
|
|
banks += 4 * mce->bank;
|
|
|
|
/*
|
|
|
|
* if IA32_MCi_CTL is not all 1s, the uncorrected error
|
|
|
|
* reporting is disabled for the bank
|
|
|
|
*/
|
|
|
|
if ((mce->status & MCI_STATUS_UC) && banks[0] != ~(u64)0)
|
|
|
|
return 0;
|
|
|
|
if (mce->status & MCI_STATUS_UC) {
|
|
|
|
if ((vcpu->arch.mcg_status & MCG_STATUS_MCIP) ||
|
2009-12-07 13:16:48 +03:00
|
|
|
!kvm_read_cr4_bits(vcpu, X86_CR4_MCE)) {
|
2009-05-11 12:48:15 +04:00
|
|
|
printk(KERN_DEBUG "kvm: set_mce: "
|
|
|
|
"injects mce exception while "
|
|
|
|
"previous one is in progress!\n");
|
2010-05-10 13:34:53 +04:00
|
|
|
kvm_make_request(KVM_REQ_TRIPLE_FAULT, vcpu);
|
2009-05-11 12:48:15 +04:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
if (banks[1] & MCI_STATUS_VAL)
|
|
|
|
mce->status |= MCI_STATUS_OVER;
|
|
|
|
banks[2] = mce->addr;
|
|
|
|
banks[3] = mce->misc;
|
|
|
|
vcpu->arch.mcg_status = mce->mcg_status;
|
|
|
|
banks[1] = mce->status;
|
|
|
|
kvm_queue_exception(vcpu, MC_VECTOR);
|
|
|
|
} else if (!(banks[1] & MCI_STATUS_VAL)
|
|
|
|
|| !(banks[1] & MCI_STATUS_UC)) {
|
|
|
|
if (banks[1] & MCI_STATUS_VAL)
|
|
|
|
mce->status |= MCI_STATUS_OVER;
|
|
|
|
banks[2] = mce->addr;
|
|
|
|
banks[3] = mce->misc;
|
|
|
|
banks[1] = mce->status;
|
|
|
|
} else
|
|
|
|
banks[1] |= MCI_STATUS_OVER;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-11-12 03:04:25 +03:00
|
|
|
static void kvm_vcpu_ioctl_x86_get_vcpu_events(struct kvm_vcpu *vcpu,
|
|
|
|
struct kvm_vcpu_events *events)
|
|
|
|
{
|
2010-02-15 12:45:41 +03:00
|
|
|
events->exception.injected =
|
|
|
|
vcpu->arch.exception.pending &&
|
|
|
|
!kvm_exception_is_soft(vcpu->arch.exception.nr);
|
2009-11-12 03:04:25 +03:00
|
|
|
events->exception.nr = vcpu->arch.exception.nr;
|
|
|
|
events->exception.has_error_code = vcpu->arch.exception.has_error_code;
|
|
|
|
events->exception.error_code = vcpu->arch.exception.error_code;
|
|
|
|
|
2010-02-15 12:45:41 +03:00
|
|
|
events->interrupt.injected =
|
|
|
|
vcpu->arch.interrupt.pending && !vcpu->arch.interrupt.soft;
|
2009-11-12 03:04:25 +03:00
|
|
|
events->interrupt.nr = vcpu->arch.interrupt.nr;
|
2010-02-15 12:45:41 +03:00
|
|
|
events->interrupt.soft = 0;
|
2010-02-19 21:38:07 +03:00
|
|
|
events->interrupt.shadow =
|
|
|
|
kvm_x86_ops->get_interrupt_shadow(vcpu,
|
|
|
|
KVM_X86_SHADOW_INT_MOV_SS | KVM_X86_SHADOW_INT_STI);
|
2009-11-12 03:04:25 +03:00
|
|
|
|
|
|
|
events->nmi.injected = vcpu->arch.nmi_injected;
|
|
|
|
events->nmi.pending = vcpu->arch.nmi_pending;
|
|
|
|
events->nmi.masked = kvm_x86_ops->get_nmi_mask(vcpu);
|
|
|
|
|
|
|
|
events->sipi_vector = vcpu->arch.sipi_vector;
|
|
|
|
|
2009-12-06 20:24:15 +03:00
|
|
|
events->flags = (KVM_VCPUEVENT_VALID_NMI_PENDING
|
2010-02-19 21:38:07 +03:00
|
|
|
| KVM_VCPUEVENT_VALID_SIPI_VECTOR
|
|
|
|
| KVM_VCPUEVENT_VALID_SHADOW);
|
2009-11-12 03:04:25 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
static int kvm_vcpu_ioctl_x86_set_vcpu_events(struct kvm_vcpu *vcpu,
|
|
|
|
struct kvm_vcpu_events *events)
|
|
|
|
{
|
2009-12-06 20:24:15 +03:00
|
|
|
if (events->flags & ~(KVM_VCPUEVENT_VALID_NMI_PENDING
|
2010-02-19 21:38:07 +03:00
|
|
|
| KVM_VCPUEVENT_VALID_SIPI_VECTOR
|
|
|
|
| KVM_VCPUEVENT_VALID_SHADOW))
|
2009-11-12 03:04:25 +03:00
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
vcpu->arch.exception.pending = events->exception.injected;
|
|
|
|
vcpu->arch.exception.nr = events->exception.nr;
|
|
|
|
vcpu->arch.exception.has_error_code = events->exception.has_error_code;
|
|
|
|
vcpu->arch.exception.error_code = events->exception.error_code;
|
|
|
|
|
|
|
|
vcpu->arch.interrupt.pending = events->interrupt.injected;
|
|
|
|
vcpu->arch.interrupt.nr = events->interrupt.nr;
|
|
|
|
vcpu->arch.interrupt.soft = events->interrupt.soft;
|
|
|
|
if (vcpu->arch.interrupt.pending && irqchip_in_kernel(vcpu->kvm))
|
|
|
|
kvm_pic_clear_isr_ack(vcpu->kvm);
|
2010-02-19 21:38:07 +03:00
|
|
|
if (events->flags & KVM_VCPUEVENT_VALID_SHADOW)
|
|
|
|
kvm_x86_ops->set_interrupt_shadow(vcpu,
|
|
|
|
events->interrupt.shadow);
|
2009-11-12 03:04:25 +03:00
|
|
|
|
|
|
|
vcpu->arch.nmi_injected = events->nmi.injected;
|
2009-12-06 20:24:15 +03:00
|
|
|
if (events->flags & KVM_VCPUEVENT_VALID_NMI_PENDING)
|
|
|
|
vcpu->arch.nmi_pending = events->nmi.pending;
|
2009-11-12 03:04:25 +03:00
|
|
|
kvm_x86_ops->set_nmi_mask(vcpu, events->nmi.masked);
|
|
|
|
|
2009-12-06 20:24:15 +03:00
|
|
|
if (events->flags & KVM_VCPUEVENT_VALID_SIPI_VECTOR)
|
|
|
|
vcpu->arch.sipi_vector = events->sipi_vector;
|
2009-11-12 03:04:25 +03:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2010-02-15 12:45:43 +03:00
|
|
|
static void kvm_vcpu_ioctl_x86_get_debugregs(struct kvm_vcpu *vcpu,
|
|
|
|
struct kvm_debugregs *dbgregs)
|
|
|
|
{
|
|
|
|
memcpy(dbgregs->db, vcpu->arch.db, sizeof(vcpu->arch.db));
|
|
|
|
dbgregs->dr6 = vcpu->arch.dr6;
|
|
|
|
dbgregs->dr7 = vcpu->arch.dr7;
|
|
|
|
dbgregs->flags = 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int kvm_vcpu_ioctl_x86_set_debugregs(struct kvm_vcpu *vcpu,
|
|
|
|
struct kvm_debugregs *dbgregs)
|
|
|
|
{
|
|
|
|
if (dbgregs->flags)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
memcpy(vcpu->arch.db, dbgregs->db, sizeof(vcpu->arch.db));
|
|
|
|
vcpu->arch.dr6 = dbgregs->dr6;
|
|
|
|
vcpu->arch.dr7 = dbgregs->dr7;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2010-06-13 13:29:39 +04:00
|
|
|
static void kvm_vcpu_ioctl_x86_get_xsave(struct kvm_vcpu *vcpu,
|
|
|
|
struct kvm_xsave *guest_xsave)
|
|
|
|
{
|
|
|
|
if (cpu_has_xsave)
|
|
|
|
memcpy(guest_xsave->region,
|
|
|
|
&vcpu->arch.guest_fpu.state->xsave,
|
|
|
|
sizeof(struct xsave_struct));
|
|
|
|
else {
|
|
|
|
memcpy(guest_xsave->region,
|
|
|
|
&vcpu->arch.guest_fpu.state->fxsave,
|
|
|
|
sizeof(struct i387_fxsave_struct));
|
|
|
|
*(u64 *)&guest_xsave->region[XSAVE_HDR_OFFSET / sizeof(u32)] =
|
|
|
|
XSTATE_FPSSE;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static int kvm_vcpu_ioctl_x86_set_xsave(struct kvm_vcpu *vcpu,
|
|
|
|
struct kvm_xsave *guest_xsave)
|
|
|
|
{
|
|
|
|
u64 xstate_bv =
|
|
|
|
*(u64 *)&guest_xsave->region[XSAVE_HDR_OFFSET / sizeof(u32)];
|
|
|
|
|
|
|
|
if (cpu_has_xsave)
|
|
|
|
memcpy(&vcpu->arch.guest_fpu.state->xsave,
|
|
|
|
guest_xsave->region, sizeof(struct xsave_struct));
|
|
|
|
else {
|
|
|
|
if (xstate_bv & ~XSTATE_FPSSE)
|
|
|
|
return -EINVAL;
|
|
|
|
memcpy(&vcpu->arch.guest_fpu.state->fxsave,
|
|
|
|
guest_xsave->region, sizeof(struct i387_fxsave_struct));
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void kvm_vcpu_ioctl_x86_get_xcrs(struct kvm_vcpu *vcpu,
|
|
|
|
struct kvm_xcrs *guest_xcrs)
|
|
|
|
{
|
|
|
|
if (!cpu_has_xsave) {
|
|
|
|
guest_xcrs->nr_xcrs = 0;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
guest_xcrs->nr_xcrs = 1;
|
|
|
|
guest_xcrs->flags = 0;
|
|
|
|
guest_xcrs->xcrs[0].xcr = XCR_XFEATURE_ENABLED_MASK;
|
|
|
|
guest_xcrs->xcrs[0].value = vcpu->arch.xcr0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int kvm_vcpu_ioctl_x86_set_xcrs(struct kvm_vcpu *vcpu,
|
|
|
|
struct kvm_xcrs *guest_xcrs)
|
|
|
|
{
|
|
|
|
int i, r = 0;
|
|
|
|
|
|
|
|
if (!cpu_has_xsave)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
if (guest_xcrs->nr_xcrs > KVM_MAX_XCRS || guest_xcrs->flags)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
for (i = 0; i < guest_xcrs->nr_xcrs; i++)
|
|
|
|
/* Only support XCR0 currently */
|
|
|
|
if (guest_xcrs->xcrs[0].xcr == XCR_XFEATURE_ENABLED_MASK) {
|
|
|
|
r = __kvm_set_xcr(vcpu, XCR_XFEATURE_ENABLED_MASK,
|
|
|
|
guest_xcrs->xcrs[0].value);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (r)
|
|
|
|
r = -EINVAL;
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
long kvm_arch_vcpu_ioctl(struct file *filp,
|
|
|
|
unsigned int ioctl, unsigned long arg)
|
|
|
|
{
|
|
|
|
struct kvm_vcpu *vcpu = filp->private_data;
|
|
|
|
void __user *argp = (void __user *)arg;
|
|
|
|
int r;
|
2010-06-20 16:54:43 +04:00
|
|
|
union {
|
|
|
|
struct kvm_lapic_state *lapic;
|
|
|
|
struct kvm_xsave *xsave;
|
|
|
|
struct kvm_xcrs *xcrs;
|
|
|
|
void *buffer;
|
|
|
|
} u;
|
|
|
|
|
|
|
|
u.buffer = NULL;
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
switch (ioctl) {
|
|
|
|
case KVM_GET_LAPIC: {
|
2009-10-29 18:44:16 +03:00
|
|
|
r = -EINVAL;
|
|
|
|
if (!vcpu->arch.apic)
|
|
|
|
goto out;
|
2010-06-20 16:54:43 +04:00
|
|
|
u.lapic = kzalloc(sizeof(struct kvm_lapic_state), GFP_KERNEL);
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
|
2008-08-11 21:01:47 +04:00
|
|
|
r = -ENOMEM;
|
2010-06-20 16:54:43 +04:00
|
|
|
if (!u.lapic)
|
2008-08-11 21:01:47 +04:00
|
|
|
goto out;
|
2010-06-20 16:54:43 +04:00
|
|
|
r = kvm_vcpu_ioctl_get_lapic(vcpu, u.lapic);
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
if (r)
|
|
|
|
goto out;
|
|
|
|
r = -EFAULT;
|
2010-06-20 16:54:43 +04:00
|
|
|
if (copy_to_user(argp, u.lapic, sizeof(struct kvm_lapic_state)))
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
goto out;
|
|
|
|
r = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case KVM_SET_LAPIC: {
|
2009-10-29 18:44:16 +03:00
|
|
|
r = -EINVAL;
|
|
|
|
if (!vcpu->arch.apic)
|
|
|
|
goto out;
|
2010-06-20 16:54:43 +04:00
|
|
|
u.lapic = kmalloc(sizeof(struct kvm_lapic_state), GFP_KERNEL);
|
2008-08-11 21:01:47 +04:00
|
|
|
r = -ENOMEM;
|
2010-06-20 16:54:43 +04:00
|
|
|
if (!u.lapic)
|
2008-08-11 21:01:47 +04:00
|
|
|
goto out;
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
r = -EFAULT;
|
2010-06-20 16:54:43 +04:00
|
|
|
if (copy_from_user(u.lapic, argp, sizeof(struct kvm_lapic_state)))
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
goto out;
|
2010-06-20 16:54:43 +04:00
|
|
|
r = kvm_vcpu_ioctl_set_lapic(vcpu, u.lapic);
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
if (r)
|
|
|
|
goto out;
|
|
|
|
r = 0;
|
|
|
|
break;
|
|
|
|
}
|
2007-11-20 23:36:41 +03:00
|
|
|
case KVM_INTERRUPT: {
|
|
|
|
struct kvm_interrupt irq;
|
|
|
|
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_from_user(&irq, argp, sizeof irq))
|
|
|
|
goto out;
|
|
|
|
r = kvm_vcpu_ioctl_interrupt(vcpu, &irq);
|
|
|
|
if (r)
|
|
|
|
goto out;
|
|
|
|
r = 0;
|
|
|
|
break;
|
|
|
|
}
|
2008-09-26 11:30:55 +04:00
|
|
|
case KVM_NMI: {
|
|
|
|
r = kvm_vcpu_ioctl_nmi(vcpu);
|
|
|
|
if (r)
|
|
|
|
goto out;
|
|
|
|
r = 0;
|
|
|
|
break;
|
|
|
|
}
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
case KVM_SET_CPUID: {
|
|
|
|
struct kvm_cpuid __user *cpuid_arg = argp;
|
|
|
|
struct kvm_cpuid cpuid;
|
|
|
|
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_from_user(&cpuid, cpuid_arg, sizeof cpuid))
|
|
|
|
goto out;
|
|
|
|
r = kvm_vcpu_ioctl_set_cpuid(vcpu, &cpuid, cpuid_arg->entries);
|
|
|
|
if (r)
|
|
|
|
goto out;
|
|
|
|
break;
|
|
|
|
}
|
2007-11-21 18:10:04 +03:00
|
|
|
case KVM_SET_CPUID2: {
|
|
|
|
struct kvm_cpuid2 __user *cpuid_arg = argp;
|
|
|
|
struct kvm_cpuid2 cpuid;
|
|
|
|
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_from_user(&cpuid, cpuid_arg, sizeof cpuid))
|
|
|
|
goto out;
|
|
|
|
r = kvm_vcpu_ioctl_set_cpuid2(vcpu, &cpuid,
|
2009-01-14 19:56:00 +03:00
|
|
|
cpuid_arg->entries);
|
2007-11-21 18:10:04 +03:00
|
|
|
if (r)
|
|
|
|
goto out;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case KVM_GET_CPUID2: {
|
|
|
|
struct kvm_cpuid2 __user *cpuid_arg = argp;
|
|
|
|
struct kvm_cpuid2 cpuid;
|
|
|
|
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_from_user(&cpuid, cpuid_arg, sizeof cpuid))
|
|
|
|
goto out;
|
|
|
|
r = kvm_vcpu_ioctl_get_cpuid2(vcpu, &cpuid,
|
2009-01-14 19:56:00 +03:00
|
|
|
cpuid_arg->entries);
|
2007-11-21 18:10:04 +03:00
|
|
|
if (r)
|
|
|
|
goto out;
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_to_user(cpuid_arg, &cpuid, sizeof cpuid))
|
|
|
|
goto out;
|
|
|
|
r = 0;
|
|
|
|
break;
|
|
|
|
}
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
case KVM_GET_MSRS:
|
|
|
|
r = msr_io(vcpu, argp, kvm_get_msr, 1);
|
|
|
|
break;
|
|
|
|
case KVM_SET_MSRS:
|
|
|
|
r = msr_io(vcpu, argp, do_set_msr, 0);
|
|
|
|
break;
|
2007-10-22 18:50:39 +04:00
|
|
|
case KVM_TPR_ACCESS_REPORTING: {
|
|
|
|
struct kvm_tpr_access_ctl tac;
|
|
|
|
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_from_user(&tac, argp, sizeof tac))
|
|
|
|
goto out;
|
|
|
|
r = vcpu_ioctl_tpr_access_reporting(vcpu, &tac);
|
|
|
|
if (r)
|
|
|
|
goto out;
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_to_user(argp, &tac, sizeof tac))
|
|
|
|
goto out;
|
|
|
|
r = 0;
|
|
|
|
break;
|
|
|
|
};
|
2007-10-25 18:52:32 +04:00
|
|
|
case KVM_SET_VAPIC_ADDR: {
|
|
|
|
struct kvm_vapic_addr va;
|
|
|
|
|
|
|
|
r = -EINVAL;
|
|
|
|
if (!irqchip_in_kernel(vcpu->kvm))
|
|
|
|
goto out;
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_from_user(&va, argp, sizeof va))
|
|
|
|
goto out;
|
|
|
|
r = 0;
|
|
|
|
kvm_lapic_set_vapic_addr(vcpu, va.vapic_addr);
|
|
|
|
break;
|
|
|
|
}
|
2009-05-11 12:48:15 +04:00
|
|
|
case KVM_X86_SETUP_MCE: {
|
|
|
|
u64 mcg_cap;
|
|
|
|
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_from_user(&mcg_cap, argp, sizeof mcg_cap))
|
|
|
|
goto out;
|
|
|
|
r = kvm_vcpu_ioctl_x86_setup_mce(vcpu, mcg_cap);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case KVM_X86_SET_MCE: {
|
|
|
|
struct kvm_x86_mce mce;
|
|
|
|
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_from_user(&mce, argp, sizeof mce))
|
|
|
|
goto out;
|
|
|
|
r = kvm_vcpu_ioctl_x86_set_mce(vcpu, &mce);
|
|
|
|
break;
|
|
|
|
}
|
2009-11-12 03:04:25 +03:00
|
|
|
case KVM_GET_VCPU_EVENTS: {
|
|
|
|
struct kvm_vcpu_events events;
|
|
|
|
|
|
|
|
kvm_vcpu_ioctl_x86_get_vcpu_events(vcpu, &events);
|
|
|
|
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_to_user(argp, &events, sizeof(struct kvm_vcpu_events)))
|
|
|
|
break;
|
|
|
|
r = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case KVM_SET_VCPU_EVENTS: {
|
|
|
|
struct kvm_vcpu_events events;
|
|
|
|
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_from_user(&events, argp, sizeof(struct kvm_vcpu_events)))
|
|
|
|
break;
|
|
|
|
|
|
|
|
r = kvm_vcpu_ioctl_x86_set_vcpu_events(vcpu, &events);
|
|
|
|
break;
|
|
|
|
}
|
2010-02-15 12:45:43 +03:00
|
|
|
case KVM_GET_DEBUGREGS: {
|
|
|
|
struct kvm_debugregs dbgregs;
|
|
|
|
|
|
|
|
kvm_vcpu_ioctl_x86_get_debugregs(vcpu, &dbgregs);
|
|
|
|
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_to_user(argp, &dbgregs,
|
|
|
|
sizeof(struct kvm_debugregs)))
|
|
|
|
break;
|
|
|
|
r = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case KVM_SET_DEBUGREGS: {
|
|
|
|
struct kvm_debugregs dbgregs;
|
|
|
|
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_from_user(&dbgregs, argp,
|
|
|
|
sizeof(struct kvm_debugregs)))
|
|
|
|
break;
|
|
|
|
|
|
|
|
r = kvm_vcpu_ioctl_x86_set_debugregs(vcpu, &dbgregs);
|
|
|
|
break;
|
|
|
|
}
|
2010-06-13 13:29:39 +04:00
|
|
|
case KVM_GET_XSAVE: {
|
2010-06-20 16:54:43 +04:00
|
|
|
u.xsave = kzalloc(sizeof(struct kvm_xsave), GFP_KERNEL);
|
2010-06-13 13:29:39 +04:00
|
|
|
r = -ENOMEM;
|
2010-06-20 16:54:43 +04:00
|
|
|
if (!u.xsave)
|
2010-06-13 13:29:39 +04:00
|
|
|
break;
|
|
|
|
|
2010-06-20 16:54:43 +04:00
|
|
|
kvm_vcpu_ioctl_x86_get_xsave(vcpu, u.xsave);
|
2010-06-13 13:29:39 +04:00
|
|
|
|
|
|
|
r = -EFAULT;
|
2010-06-20 16:54:43 +04:00
|
|
|
if (copy_to_user(argp, u.xsave, sizeof(struct kvm_xsave)))
|
2010-06-13 13:29:39 +04:00
|
|
|
break;
|
|
|
|
r = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case KVM_SET_XSAVE: {
|
2010-06-20 16:54:43 +04:00
|
|
|
u.xsave = kzalloc(sizeof(struct kvm_xsave), GFP_KERNEL);
|
2010-06-13 13:29:39 +04:00
|
|
|
r = -ENOMEM;
|
2010-06-20 16:54:43 +04:00
|
|
|
if (!u.xsave)
|
2010-06-13 13:29:39 +04:00
|
|
|
break;
|
|
|
|
|
|
|
|
r = -EFAULT;
|
2010-06-20 16:54:43 +04:00
|
|
|
if (copy_from_user(u.xsave, argp, sizeof(struct kvm_xsave)))
|
2010-06-13 13:29:39 +04:00
|
|
|
break;
|
|
|
|
|
2010-06-20 16:54:43 +04:00
|
|
|
r = kvm_vcpu_ioctl_x86_set_xsave(vcpu, u.xsave);
|
2010-06-13 13:29:39 +04:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
case KVM_GET_XCRS: {
|
2010-06-20 16:54:43 +04:00
|
|
|
u.xcrs = kzalloc(sizeof(struct kvm_xcrs), GFP_KERNEL);
|
2010-06-13 13:29:39 +04:00
|
|
|
r = -ENOMEM;
|
2010-06-20 16:54:43 +04:00
|
|
|
if (!u.xcrs)
|
2010-06-13 13:29:39 +04:00
|
|
|
break;
|
|
|
|
|
2010-06-20 16:54:43 +04:00
|
|
|
kvm_vcpu_ioctl_x86_get_xcrs(vcpu, u.xcrs);
|
2010-06-13 13:29:39 +04:00
|
|
|
|
|
|
|
r = -EFAULT;
|
2010-06-20 16:54:43 +04:00
|
|
|
if (copy_to_user(argp, u.xcrs,
|
2010-06-13 13:29:39 +04:00
|
|
|
sizeof(struct kvm_xcrs)))
|
|
|
|
break;
|
|
|
|
r = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case KVM_SET_XCRS: {
|
2010-06-20 16:54:43 +04:00
|
|
|
u.xcrs = kzalloc(sizeof(struct kvm_xcrs), GFP_KERNEL);
|
2010-06-13 13:29:39 +04:00
|
|
|
r = -ENOMEM;
|
2010-06-20 16:54:43 +04:00
|
|
|
if (!u.xcrs)
|
2010-06-13 13:29:39 +04:00
|
|
|
break;
|
|
|
|
|
|
|
|
r = -EFAULT;
|
2010-06-20 16:54:43 +04:00
|
|
|
if (copy_from_user(u.xcrs, argp,
|
2010-06-13 13:29:39 +04:00
|
|
|
sizeof(struct kvm_xcrs)))
|
|
|
|
break;
|
|
|
|
|
2010-06-20 16:54:43 +04:00
|
|
|
r = kvm_vcpu_ioctl_x86_set_xcrs(vcpu, u.xcrs);
|
2010-06-13 13:29:39 +04:00
|
|
|
break;
|
|
|
|
}
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
default:
|
|
|
|
r = -EINVAL;
|
|
|
|
}
|
|
|
|
out:
|
2010-06-20 16:54:43 +04:00
|
|
|
kfree(u.buffer);
|
KVM: Portability: split kvm_vcpu_ioctl
This patch splits kvm_vcpu_ioctl into archtecture independent parts, and
x86 specific parts which go to kvm_arch_vcpu_ioctl in x86.c.
Common ioctls for all architectures are:
KVM_RUN, KVM_GET/SET_(S-)REGS, KVM_TRANSLATE, KVM_INTERRUPT,
KVM_DEBUG_GUEST, KVM_SET_SIGNAL_MASK, KVM_GET/SET_FPU
Note that some PPC chips don't have an FPU, so we might need an #ifdef
around KVM_GET/SET_FPU one day.
x86 specific ioctls are:
KVM_GET/SET_LAPIC, KVM_SET_CPUID, KVM_GET/SET_MSRS
An interresting aspect is vcpu_load/vcpu_put. We now have a common
vcpu_load/put which does the preemption stuff, and an architecture
specific kvm_arch_vcpu_load/put. In the x86 case, this one calls the
vmx/svm function defined in kvm_x86_ops.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-11 21:16:52 +04:00
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2007-10-29 18:08:35 +03:00
|
|
|
static int kvm_vm_ioctl_set_tss_addr(struct kvm *kvm, unsigned long addr)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
if (addr > (unsigned int)(-3 * PAGE_SIZE))
|
|
|
|
return -1;
|
|
|
|
ret = kvm_x86_ops->set_tss_addr(kvm, addr);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2009-07-21 06:42:48 +04:00
|
|
|
static int kvm_vm_ioctl_set_identity_map_addr(struct kvm *kvm,
|
|
|
|
u64 ident_addr)
|
|
|
|
{
|
|
|
|
kvm->arch.ept_identity_map_addr = ident_addr;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2007-10-29 18:08:35 +03:00
|
|
|
static int kvm_vm_ioctl_set_nr_mmu_pages(struct kvm *kvm,
|
|
|
|
u32 kvm_nr_mmu_pages)
|
|
|
|
{
|
|
|
|
if (kvm_nr_mmu_pages < KVM_MIN_ALLOC_MMU_PAGES)
|
|
|
|
return -EINVAL;
|
|
|
|
|
2009-12-23 19:35:26 +03:00
|
|
|
mutex_lock(&kvm->slots_lock);
|
2009-05-13 01:55:43 +04:00
|
|
|
spin_lock(&kvm->mmu_lock);
|
2007-10-29 18:08:35 +03:00
|
|
|
|
|
|
|
kvm_mmu_change_mmu_pages(kvm, kvm_nr_mmu_pages);
|
2007-12-14 05:01:48 +03:00
|
|
|
kvm->arch.n_requested_mmu_pages = kvm_nr_mmu_pages;
|
2007-10-29 18:08:35 +03:00
|
|
|
|
2009-05-13 01:55:43 +04:00
|
|
|
spin_unlock(&kvm->mmu_lock);
|
2009-12-23 19:35:26 +03:00
|
|
|
mutex_unlock(&kvm->slots_lock);
|
2007-10-29 18:08:35 +03:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int kvm_vm_ioctl_get_nr_mmu_pages(struct kvm *kvm)
|
|
|
|
{
|
2007-12-14 05:01:48 +03:00
|
|
|
return kvm->arch.n_alloc_mmu_pages;
|
2007-10-29 18:08:35 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
static int kvm_vm_ioctl_get_irqchip(struct kvm *kvm, struct kvm_irqchip *chip)
|
|
|
|
{
|
|
|
|
int r;
|
|
|
|
|
|
|
|
r = 0;
|
|
|
|
switch (chip->chip_id) {
|
|
|
|
case KVM_IRQCHIP_PIC_MASTER:
|
|
|
|
memcpy(&chip->chip.pic,
|
|
|
|
&pic_irqchip(kvm)->pics[0],
|
|
|
|
sizeof(struct kvm_pic_state));
|
|
|
|
break;
|
|
|
|
case KVM_IRQCHIP_PIC_SLAVE:
|
|
|
|
memcpy(&chip->chip.pic,
|
|
|
|
&pic_irqchip(kvm)->pics[1],
|
|
|
|
sizeof(struct kvm_pic_state));
|
|
|
|
break;
|
|
|
|
case KVM_IRQCHIP_IOAPIC:
|
2009-08-24 12:54:25 +04:00
|
|
|
r = kvm_get_ioapic(kvm, &chip->chip.ioapic);
|
2007-10-29 18:08:35 +03:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
r = -EINVAL;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int kvm_vm_ioctl_set_irqchip(struct kvm *kvm, struct kvm_irqchip *chip)
|
|
|
|
{
|
|
|
|
int r;
|
|
|
|
|
|
|
|
r = 0;
|
|
|
|
switch (chip->chip_id) {
|
|
|
|
case KVM_IRQCHIP_PIC_MASTER:
|
2010-02-17 17:00:41 +03:00
|
|
|
raw_spin_lock(&pic_irqchip(kvm)->lock);
|
2007-10-29 18:08:35 +03:00
|
|
|
memcpy(&pic_irqchip(kvm)->pics[0],
|
|
|
|
&chip->chip.pic,
|
|
|
|
sizeof(struct kvm_pic_state));
|
2010-02-17 17:00:41 +03:00
|
|
|
raw_spin_unlock(&pic_irqchip(kvm)->lock);
|
2007-10-29 18:08:35 +03:00
|
|
|
break;
|
|
|
|
case KVM_IRQCHIP_PIC_SLAVE:
|
2010-02-17 17:00:41 +03:00
|
|
|
raw_spin_lock(&pic_irqchip(kvm)->lock);
|
2007-10-29 18:08:35 +03:00
|
|
|
memcpy(&pic_irqchip(kvm)->pics[1],
|
|
|
|
&chip->chip.pic,
|
|
|
|
sizeof(struct kvm_pic_state));
|
2010-02-17 17:00:41 +03:00
|
|
|
raw_spin_unlock(&pic_irqchip(kvm)->lock);
|
2007-10-29 18:08:35 +03:00
|
|
|
break;
|
|
|
|
case KVM_IRQCHIP_IOAPIC:
|
2009-08-24 12:54:25 +04:00
|
|
|
r = kvm_set_ioapic(kvm, &chip->chip.ioapic);
|
2007-10-29 18:08:35 +03:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
r = -EINVAL;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
kvm_pic_update_irq(pic_irqchip(kvm));
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2008-03-03 19:50:59 +03:00
|
|
|
static int kvm_vm_ioctl_get_pit(struct kvm *kvm, struct kvm_pit_state *ps)
|
|
|
|
{
|
|
|
|
int r = 0;
|
|
|
|
|
2009-06-23 22:05:14 +04:00
|
|
|
mutex_lock(&kvm->arch.vpit->pit_state.lock);
|
2008-03-03 19:50:59 +03:00
|
|
|
memcpy(ps, &kvm->arch.vpit->pit_state, sizeof(struct kvm_pit_state));
|
2009-06-23 22:05:14 +04:00
|
|
|
mutex_unlock(&kvm->arch.vpit->pit_state.lock);
|
2008-03-03 19:50:59 +03:00
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int kvm_vm_ioctl_set_pit(struct kvm *kvm, struct kvm_pit_state *ps)
|
|
|
|
{
|
|
|
|
int r = 0;
|
|
|
|
|
2009-06-23 22:05:14 +04:00
|
|
|
mutex_lock(&kvm->arch.vpit->pit_state.lock);
|
2008-03-03 19:50:59 +03:00
|
|
|
memcpy(&kvm->arch.vpit->pit_state, ps, sizeof(struct kvm_pit_state));
|
2009-07-07 19:50:38 +04:00
|
|
|
kvm_pit_load_count(kvm, 0, ps->channels[0].count, 0);
|
|
|
|
mutex_unlock(&kvm->arch.vpit->pit_state.lock);
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int kvm_vm_ioctl_get_pit2(struct kvm *kvm, struct kvm_pit_state2 *ps)
|
|
|
|
{
|
|
|
|
int r = 0;
|
|
|
|
|
|
|
|
mutex_lock(&kvm->arch.vpit->pit_state.lock);
|
|
|
|
memcpy(ps->channels, &kvm->arch.vpit->pit_state.channels,
|
|
|
|
sizeof(ps->channels));
|
|
|
|
ps->flags = kvm->arch.vpit->pit_state.flags;
|
|
|
|
mutex_unlock(&kvm->arch.vpit->pit_state.lock);
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int kvm_vm_ioctl_set_pit2(struct kvm *kvm, struct kvm_pit_state2 *ps)
|
|
|
|
{
|
|
|
|
int r = 0, start = 0;
|
|
|
|
u32 prev_legacy, cur_legacy;
|
|
|
|
mutex_lock(&kvm->arch.vpit->pit_state.lock);
|
|
|
|
prev_legacy = kvm->arch.vpit->pit_state.flags & KVM_PIT_FLAGS_HPET_LEGACY;
|
|
|
|
cur_legacy = ps->flags & KVM_PIT_FLAGS_HPET_LEGACY;
|
|
|
|
if (!prev_legacy && cur_legacy)
|
|
|
|
start = 1;
|
|
|
|
memcpy(&kvm->arch.vpit->pit_state.channels, &ps->channels,
|
|
|
|
sizeof(kvm->arch.vpit->pit_state.channels));
|
|
|
|
kvm->arch.vpit->pit_state.flags = ps->flags;
|
|
|
|
kvm_pit_load_count(kvm, 0, kvm->arch.vpit->pit_state.channels[0].count, start);
|
2009-06-23 22:05:14 +04:00
|
|
|
mutex_unlock(&kvm->arch.vpit->pit_state.lock);
|
2008-03-03 19:50:59 +03:00
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2008-12-30 20:55:06 +03:00
|
|
|
static int kvm_vm_ioctl_reinject(struct kvm *kvm,
|
|
|
|
struct kvm_reinject_control *control)
|
|
|
|
{
|
|
|
|
if (!kvm->arch.vpit)
|
|
|
|
return -ENXIO;
|
2009-06-23 22:05:14 +04:00
|
|
|
mutex_lock(&kvm->arch.vpit->pit_state.lock);
|
2008-12-30 20:55:06 +03:00
|
|
|
kvm->arch.vpit->pit_state.pit_timer.reinject = control->pit_reinject;
|
2009-06-23 22:05:14 +04:00
|
|
|
mutex_unlock(&kvm->arch.vpit->pit_state.lock);
|
2008-12-30 20:55:06 +03:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2007-11-18 15:29:43 +03:00
|
|
|
/*
|
|
|
|
* Get (and clear) the dirty memory log for a memory slot.
|
|
|
|
*/
|
|
|
|
int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
|
|
|
|
struct kvm_dirty_log *log)
|
|
|
|
{
|
2010-04-12 14:35:35 +04:00
|
|
|
int r, i;
|
2007-11-18 15:29:43 +03:00
|
|
|
struct kvm_memory_slot *memslot;
|
2010-04-12 14:35:35 +04:00
|
|
|
unsigned long n;
|
2009-12-23 19:35:22 +03:00
|
|
|
unsigned long is_dirty = 0;
|
2007-11-18 15:29:43 +03:00
|
|
|
|
2009-12-23 19:35:26 +03:00
|
|
|
mutex_lock(&kvm->slots_lock);
|
2007-11-18 15:29:43 +03:00
|
|
|
|
2009-12-23 19:35:22 +03:00
|
|
|
r = -EINVAL;
|
|
|
|
if (log->slot >= KVM_MEMORY_SLOTS)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
memslot = &kvm->memslots->memslots[log->slot];
|
|
|
|
r = -ENOENT;
|
|
|
|
if (!memslot->dirty_bitmap)
|
|
|
|
goto out;
|
|
|
|
|
2010-04-12 14:35:35 +04:00
|
|
|
n = kvm_dirty_bitmap_bytes(memslot);
|
2009-12-23 19:35:22 +03:00
|
|
|
|
|
|
|
for (i = 0; !is_dirty && i < n/sizeof(long); i++)
|
|
|
|
is_dirty = memslot->dirty_bitmap[i];
|
2007-11-18 15:29:43 +03:00
|
|
|
|
|
|
|
/* If nothing is dirty, don't bother messing with page tables. */
|
|
|
|
if (is_dirty) {
|
2009-12-23 19:35:22 +03:00
|
|
|
struct kvm_memslots *slots, *old_slots;
|
2010-04-28 13:50:36 +04:00
|
|
|
unsigned long *dirty_bitmap;
|
2009-12-23 19:35:22 +03:00
|
|
|
|
2009-05-13 01:55:43 +04:00
|
|
|
spin_lock(&kvm->mmu_lock);
|
2007-11-18 15:29:43 +03:00
|
|
|
kvm_mmu_slot_remove_write_access(kvm, log->slot);
|
2009-05-13 01:55:43 +04:00
|
|
|
spin_unlock(&kvm->mmu_lock);
|
2009-12-23 19:35:22 +03:00
|
|
|
|
2010-04-28 13:50:36 +04:00
|
|
|
r = -ENOMEM;
|
|
|
|
dirty_bitmap = vmalloc(n);
|
|
|
|
if (!dirty_bitmap)
|
|
|
|
goto out;
|
|
|
|
memset(dirty_bitmap, 0, n);
|
2009-12-23 19:35:22 +03:00
|
|
|
|
2010-04-28 13:50:36 +04:00
|
|
|
r = -ENOMEM;
|
|
|
|
slots = kzalloc(sizeof(struct kvm_memslots), GFP_KERNEL);
|
|
|
|
if (!slots) {
|
|
|
|
vfree(dirty_bitmap);
|
|
|
|
goto out;
|
|
|
|
}
|
2009-12-23 19:35:22 +03:00
|
|
|
memcpy(slots, kvm->memslots, sizeof(struct kvm_memslots));
|
|
|
|
slots->memslots[log->slot].dirty_bitmap = dirty_bitmap;
|
|
|
|
|
|
|
|
old_slots = kvm->memslots;
|
|
|
|
rcu_assign_pointer(kvm->memslots, slots);
|
|
|
|
synchronize_srcu_expedited(&kvm->srcu);
|
|
|
|
dirty_bitmap = old_slots->memslots[log->slot].dirty_bitmap;
|
|
|
|
kfree(old_slots);
|
2010-04-28 13:50:36 +04:00
|
|
|
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_to_user(log->dirty_bitmap, dirty_bitmap, n)) {
|
|
|
|
vfree(dirty_bitmap);
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
vfree(dirty_bitmap);
|
|
|
|
} else {
|
|
|
|
r = -EFAULT;
|
|
|
|
if (clear_user(log->dirty_bitmap, n))
|
|
|
|
goto out;
|
2007-11-18 15:29:43 +03:00
|
|
|
}
|
2009-12-23 19:35:22 +03:00
|
|
|
|
2007-11-18 15:29:43 +03:00
|
|
|
r = 0;
|
|
|
|
out:
|
2009-12-23 19:35:26 +03:00
|
|
|
mutex_unlock(&kvm->slots_lock);
|
2007-11-18 15:29:43 +03:00
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2007-10-29 18:08:35 +03:00
|
|
|
long kvm_arch_vm_ioctl(struct file *filp,
|
|
|
|
unsigned int ioctl, unsigned long arg)
|
|
|
|
{
|
|
|
|
struct kvm *kvm = filp->private_data;
|
|
|
|
void __user *argp = (void __user *)arg;
|
2009-08-26 15:57:07 +04:00
|
|
|
int r = -ENOTTY;
|
2008-08-11 21:01:45 +04:00
|
|
|
/*
|
|
|
|
* This union makes it completely explicit to gcc-3.x
|
|
|
|
* that these two variables' stack usage should be
|
|
|
|
* combined, not added together.
|
|
|
|
*/
|
|
|
|
union {
|
|
|
|
struct kvm_pit_state ps;
|
2009-07-07 19:50:38 +04:00
|
|
|
struct kvm_pit_state2 ps2;
|
2009-05-15 00:42:53 +04:00
|
|
|
struct kvm_pit_config pit_config;
|
2008-08-11 21:01:45 +04:00
|
|
|
} u;
|
2007-10-29 18:08:35 +03:00
|
|
|
|
|
|
|
switch (ioctl) {
|
|
|
|
case KVM_SET_TSS_ADDR:
|
|
|
|
r = kvm_vm_ioctl_set_tss_addr(kvm, arg);
|
|
|
|
if (r < 0)
|
|
|
|
goto out;
|
|
|
|
break;
|
2009-07-21 06:42:48 +04:00
|
|
|
case KVM_SET_IDENTITY_MAP_ADDR: {
|
|
|
|
u64 ident_addr;
|
|
|
|
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_from_user(&ident_addr, argp, sizeof ident_addr))
|
|
|
|
goto out;
|
|
|
|
r = kvm_vm_ioctl_set_identity_map_addr(kvm, ident_addr);
|
|
|
|
if (r < 0)
|
|
|
|
goto out;
|
|
|
|
break;
|
|
|
|
}
|
2007-10-29 18:08:35 +03:00
|
|
|
case KVM_SET_NR_MMU_PAGES:
|
|
|
|
r = kvm_vm_ioctl_set_nr_mmu_pages(kvm, arg);
|
|
|
|
if (r)
|
|
|
|
goto out;
|
|
|
|
break;
|
|
|
|
case KVM_GET_NR_MMU_PAGES:
|
|
|
|
r = kvm_vm_ioctl_get_nr_mmu_pages(kvm);
|
|
|
|
break;
|
2009-10-29 18:44:15 +03:00
|
|
|
case KVM_CREATE_IRQCHIP: {
|
|
|
|
struct kvm_pic *vpic;
|
|
|
|
|
|
|
|
mutex_lock(&kvm->lock);
|
|
|
|
r = -EEXIST;
|
|
|
|
if (kvm->arch.vpic)
|
|
|
|
goto create_irqchip_unlock;
|
2007-10-29 18:08:35 +03:00
|
|
|
r = -ENOMEM;
|
2009-10-29 18:44:15 +03:00
|
|
|
vpic = kvm_create_pic(kvm);
|
|
|
|
if (vpic) {
|
2007-10-29 18:08:35 +03:00
|
|
|
r = kvm_ioapic_init(kvm);
|
|
|
|
if (r) {
|
2010-02-09 05:33:03 +03:00
|
|
|
kvm_io_bus_unregister_dev(kvm, KVM_PIO_BUS,
|
|
|
|
&vpic->dev);
|
2009-10-29 18:44:15 +03:00
|
|
|
kfree(vpic);
|
|
|
|
goto create_irqchip_unlock;
|
2007-10-29 18:08:35 +03:00
|
|
|
}
|
|
|
|
} else
|
2009-10-29 18:44:15 +03:00
|
|
|
goto create_irqchip_unlock;
|
|
|
|
smp_wmb();
|
|
|
|
kvm->arch.vpic = vpic;
|
|
|
|
smp_wmb();
|
2008-11-19 14:58:46 +03:00
|
|
|
r = kvm_setup_default_irq_routing(kvm);
|
|
|
|
if (r) {
|
2009-10-29 18:44:15 +03:00
|
|
|
mutex_lock(&kvm->irq_lock);
|
2010-02-09 05:33:03 +03:00
|
|
|
kvm_ioapic_destroy(kvm);
|
|
|
|
kvm_destroy_pic(kvm);
|
2009-10-29 18:44:15 +03:00
|
|
|
mutex_unlock(&kvm->irq_lock);
|
2008-11-19 14:58:46 +03:00
|
|
|
}
|
2009-10-29 18:44:15 +03:00
|
|
|
create_irqchip_unlock:
|
|
|
|
mutex_unlock(&kvm->lock);
|
2007-10-29 18:08:35 +03:00
|
|
|
break;
|
2009-10-29 18:44:15 +03:00
|
|
|
}
|
2008-01-28 00:10:22 +03:00
|
|
|
case KVM_CREATE_PIT:
|
2009-05-15 00:42:53 +04:00
|
|
|
u.pit_config.flags = KVM_PIT_SPEAKER_DUMMY;
|
|
|
|
goto create_pit;
|
|
|
|
case KVM_CREATE_PIT2:
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_from_user(&u.pit_config, argp,
|
|
|
|
sizeof(struct kvm_pit_config)))
|
|
|
|
goto out;
|
|
|
|
create_pit:
|
2009-12-23 19:35:26 +03:00
|
|
|
mutex_lock(&kvm->slots_lock);
|
2009-01-05 16:21:42 +03:00
|
|
|
r = -EEXIST;
|
|
|
|
if (kvm->arch.vpit)
|
|
|
|
goto create_pit_unlock;
|
2008-01-28 00:10:22 +03:00
|
|
|
r = -ENOMEM;
|
2009-05-15 00:42:53 +04:00
|
|
|
kvm->arch.vpit = kvm_create_pit(kvm, u.pit_config.flags);
|
2008-01-28 00:10:22 +03:00
|
|
|
if (kvm->arch.vpit)
|
|
|
|
r = 0;
|
2009-01-05 16:21:42 +03:00
|
|
|
create_pit_unlock:
|
2009-12-23 19:35:26 +03:00
|
|
|
mutex_unlock(&kvm->slots_lock);
|
2008-01-28 00:10:22 +03:00
|
|
|
break;
|
2009-02-04 18:28:14 +03:00
|
|
|
case KVM_IRQ_LINE_STATUS:
|
2007-10-29 18:08:35 +03:00
|
|
|
case KVM_IRQ_LINE: {
|
|
|
|
struct kvm_irq_level irq_event;
|
|
|
|
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_from_user(&irq_event, argp, sizeof irq_event))
|
|
|
|
goto out;
|
2010-03-12 05:09:45 +03:00
|
|
|
r = -ENXIO;
|
2007-10-29 18:08:35 +03:00
|
|
|
if (irqchip_in_kernel(kvm)) {
|
2009-02-04 18:28:14 +03:00
|
|
|
__s32 status;
|
|
|
|
status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID,
|
|
|
|
irq_event.irq, irq_event.level);
|
|
|
|
if (ioctl == KVM_IRQ_LINE_STATUS) {
|
2010-03-12 05:09:45 +03:00
|
|
|
r = -EFAULT;
|
2009-02-04 18:28:14 +03:00
|
|
|
irq_event.status = status;
|
|
|
|
if (copy_to_user(argp, &irq_event,
|
|
|
|
sizeof irq_event))
|
|
|
|
goto out;
|
|
|
|
}
|
2007-10-29 18:08:35 +03:00
|
|
|
r = 0;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case KVM_GET_IRQCHIP: {
|
|
|
|
/* 0: PIC master, 1: PIC slave, 2: IOAPIC */
|
2008-08-11 21:01:45 +04:00
|
|
|
struct kvm_irqchip *chip = kmalloc(sizeof(*chip), GFP_KERNEL);
|
2007-10-29 18:08:35 +03:00
|
|
|
|
2008-08-11 21:01:45 +04:00
|
|
|
r = -ENOMEM;
|
|
|
|
if (!chip)
|
2007-10-29 18:08:35 +03:00
|
|
|
goto out;
|
2008-08-11 21:01:45 +04:00
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_from_user(chip, argp, sizeof *chip))
|
|
|
|
goto get_irqchip_out;
|
2007-10-29 18:08:35 +03:00
|
|
|
r = -ENXIO;
|
|
|
|
if (!irqchip_in_kernel(kvm))
|
2008-08-11 21:01:45 +04:00
|
|
|
goto get_irqchip_out;
|
|
|
|
r = kvm_vm_ioctl_get_irqchip(kvm, chip);
|
2007-10-29 18:08:35 +03:00
|
|
|
if (r)
|
2008-08-11 21:01:45 +04:00
|
|
|
goto get_irqchip_out;
|
2007-10-29 18:08:35 +03:00
|
|
|
r = -EFAULT;
|
2008-08-11 21:01:45 +04:00
|
|
|
if (copy_to_user(argp, chip, sizeof *chip))
|
|
|
|
goto get_irqchip_out;
|
2007-10-29 18:08:35 +03:00
|
|
|
r = 0;
|
2008-08-11 21:01:45 +04:00
|
|
|
get_irqchip_out:
|
|
|
|
kfree(chip);
|
|
|
|
if (r)
|
|
|
|
goto out;
|
2007-10-29 18:08:35 +03:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
case KVM_SET_IRQCHIP: {
|
|
|
|
/* 0: PIC master, 1: PIC slave, 2: IOAPIC */
|
2008-08-11 21:01:45 +04:00
|
|
|
struct kvm_irqchip *chip = kmalloc(sizeof(*chip), GFP_KERNEL);
|
2007-10-29 18:08:35 +03:00
|
|
|
|
2008-08-11 21:01:45 +04:00
|
|
|
r = -ENOMEM;
|
|
|
|
if (!chip)
|
2007-10-29 18:08:35 +03:00
|
|
|
goto out;
|
2008-08-11 21:01:45 +04:00
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_from_user(chip, argp, sizeof *chip))
|
|
|
|
goto set_irqchip_out;
|
2007-10-29 18:08:35 +03:00
|
|
|
r = -ENXIO;
|
|
|
|
if (!irqchip_in_kernel(kvm))
|
2008-08-11 21:01:45 +04:00
|
|
|
goto set_irqchip_out;
|
|
|
|
r = kvm_vm_ioctl_set_irqchip(kvm, chip);
|
2007-10-29 18:08:35 +03:00
|
|
|
if (r)
|
2008-08-11 21:01:45 +04:00
|
|
|
goto set_irqchip_out;
|
2007-10-29 18:08:35 +03:00
|
|
|
r = 0;
|
2008-08-11 21:01:45 +04:00
|
|
|
set_irqchip_out:
|
|
|
|
kfree(chip);
|
|
|
|
if (r)
|
|
|
|
goto out;
|
2007-10-29 18:08:35 +03:00
|
|
|
break;
|
|
|
|
}
|
2008-03-03 19:50:59 +03:00
|
|
|
case KVM_GET_PIT: {
|
|
|
|
r = -EFAULT;
|
2008-08-11 21:01:45 +04:00
|
|
|
if (copy_from_user(&u.ps, argp, sizeof(struct kvm_pit_state)))
|
2008-03-03 19:50:59 +03:00
|
|
|
goto out;
|
|
|
|
r = -ENXIO;
|
|
|
|
if (!kvm->arch.vpit)
|
|
|
|
goto out;
|
2008-08-11 21:01:45 +04:00
|
|
|
r = kvm_vm_ioctl_get_pit(kvm, &u.ps);
|
2008-03-03 19:50:59 +03:00
|
|
|
if (r)
|
|
|
|
goto out;
|
|
|
|
r = -EFAULT;
|
2008-08-11 21:01:45 +04:00
|
|
|
if (copy_to_user(argp, &u.ps, sizeof(struct kvm_pit_state)))
|
2008-03-03 19:50:59 +03:00
|
|
|
goto out;
|
|
|
|
r = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case KVM_SET_PIT: {
|
|
|
|
r = -EFAULT;
|
2008-08-11 21:01:45 +04:00
|
|
|
if (copy_from_user(&u.ps, argp, sizeof u.ps))
|
2008-03-03 19:50:59 +03:00
|
|
|
goto out;
|
|
|
|
r = -ENXIO;
|
|
|
|
if (!kvm->arch.vpit)
|
|
|
|
goto out;
|
2008-08-11 21:01:45 +04:00
|
|
|
r = kvm_vm_ioctl_set_pit(kvm, &u.ps);
|
2008-03-03 19:50:59 +03:00
|
|
|
if (r)
|
|
|
|
goto out;
|
|
|
|
r = 0;
|
|
|
|
break;
|
|
|
|
}
|
2009-07-07 19:50:38 +04:00
|
|
|
case KVM_GET_PIT2: {
|
|
|
|
r = -ENXIO;
|
|
|
|
if (!kvm->arch.vpit)
|
|
|
|
goto out;
|
|
|
|
r = kvm_vm_ioctl_get_pit2(kvm, &u.ps2);
|
|
|
|
if (r)
|
|
|
|
goto out;
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_to_user(argp, &u.ps2, sizeof(u.ps2)))
|
|
|
|
goto out;
|
|
|
|
r = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case KVM_SET_PIT2: {
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_from_user(&u.ps2, argp, sizeof(u.ps2)))
|
|
|
|
goto out;
|
|
|
|
r = -ENXIO;
|
|
|
|
if (!kvm->arch.vpit)
|
|
|
|
goto out;
|
|
|
|
r = kvm_vm_ioctl_set_pit2(kvm, &u.ps2);
|
|
|
|
if (r)
|
|
|
|
goto out;
|
|
|
|
r = 0;
|
|
|
|
break;
|
|
|
|
}
|
2008-12-30 20:55:06 +03:00
|
|
|
case KVM_REINJECT_CONTROL: {
|
|
|
|
struct kvm_reinject_control control;
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_from_user(&control, argp, sizeof(control)))
|
|
|
|
goto out;
|
|
|
|
r = kvm_vm_ioctl_reinject(kvm, &control);
|
|
|
|
if (r)
|
|
|
|
goto out;
|
|
|
|
r = 0;
|
|
|
|
break;
|
|
|
|
}
|
2009-10-16 02:21:43 +04:00
|
|
|
case KVM_XEN_HVM_CONFIG: {
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_from_user(&kvm->arch.xen_hvm_config, argp,
|
|
|
|
sizeof(struct kvm_xen_hvm_config)))
|
|
|
|
goto out;
|
|
|
|
r = -EINVAL;
|
|
|
|
if (kvm->arch.xen_hvm_config.flags)
|
|
|
|
goto out;
|
|
|
|
r = 0;
|
|
|
|
break;
|
|
|
|
}
|
2009-10-16 23:28:36 +04:00
|
|
|
case KVM_SET_CLOCK: {
|
|
|
|
struct timespec now;
|
|
|
|
struct kvm_clock_data user_ns;
|
|
|
|
u64 now_ns;
|
|
|
|
s64 delta;
|
|
|
|
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_from_user(&user_ns, argp, sizeof(user_ns)))
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
r = -EINVAL;
|
|
|
|
if (user_ns.flags)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
r = 0;
|
|
|
|
ktime_get_ts(&now);
|
|
|
|
now_ns = timespec_to_ns(&now);
|
|
|
|
delta = user_ns.clock - now_ns;
|
|
|
|
kvm->arch.kvmclock_offset = delta;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
case KVM_GET_CLOCK: {
|
|
|
|
struct timespec now;
|
|
|
|
struct kvm_clock_data user_ns;
|
|
|
|
u64 now_ns;
|
|
|
|
|
|
|
|
ktime_get_ts(&now);
|
|
|
|
now_ns = timespec_to_ns(&now);
|
|
|
|
user_ns.clock = kvm->arch.kvmclock_offset + now_ns;
|
|
|
|
user_ns.flags = 0;
|
|
|
|
|
|
|
|
r = -EFAULT;
|
|
|
|
if (copy_to_user(argp, &user_ns, sizeof(user_ns)))
|
|
|
|
goto out;
|
|
|
|
r = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2007-10-29 18:08:35 +03:00
|
|
|
default:
|
|
|
|
;
|
|
|
|
}
|
|
|
|
out:
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2007-11-16 09:38:21 +03:00
|
|
|
static void kvm_init_msr_list(void)
|
2007-10-10 19:16:19 +04:00
|
|
|
{
|
|
|
|
u32 dummy[2];
|
|
|
|
unsigned i, j;
|
|
|
|
|
2009-10-06 21:24:50 +04:00
|
|
|
/* skip the first msrs in the list. KVM-specific */
|
|
|
|
for (i = j = KVM_SAVE_MSRS_BEGIN; i < ARRAY_SIZE(msrs_to_save); i++) {
|
2007-10-10 19:16:19 +04:00
|
|
|
if (rdmsr_safe(msrs_to_save[i], &dummy[0], &dummy[1]) < 0)
|
|
|
|
continue;
|
|
|
|
if (j < i)
|
|
|
|
msrs_to_save[j] = msrs_to_save[i];
|
|
|
|
j++;
|
|
|
|
}
|
|
|
|
num_msrs_to_save = j;
|
|
|
|
}
|
|
|
|
|
2009-06-29 23:24:32 +04:00
|
|
|
static int vcpu_mmio_write(struct kvm_vcpu *vcpu, gpa_t addr, int len,
|
|
|
|
const void *v)
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
{
|
2009-06-29 23:24:32 +04:00
|
|
|
if (vcpu->arch.apic &&
|
|
|
|
!kvm_iodevice_write(&vcpu->arch.apic->dev, addr, len, v))
|
|
|
|
return 0;
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
|
2009-12-23 19:35:24 +03:00
|
|
|
return kvm_io_bus_write(vcpu->kvm, KVM_MMIO_BUS, addr, len, v);
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
}
|
|
|
|
|
2009-06-29 23:24:32 +04:00
|
|
|
static int vcpu_mmio_read(struct kvm_vcpu *vcpu, gpa_t addr, int len, void *v)
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
{
|
2009-06-29 23:24:32 +04:00
|
|
|
if (vcpu->arch.apic &&
|
|
|
|
!kvm_iodevice_read(&vcpu->arch.apic->dev, addr, len, v))
|
|
|
|
return 0;
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
|
2009-12-23 19:35:24 +03:00
|
|
|
return kvm_io_bus_read(vcpu->kvm, KVM_MMIO_BUS, addr, len, v);
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
}
|
|
|
|
|
2010-03-18 16:20:16 +03:00
|
|
|
static void kvm_set_segment(struct kvm_vcpu *vcpu,
|
|
|
|
struct kvm_segment *var, int seg)
|
|
|
|
{
|
|
|
|
kvm_x86_ops->set_segment(vcpu, var, seg);
|
|
|
|
}
|
|
|
|
|
|
|
|
void kvm_get_segment(struct kvm_vcpu *vcpu,
|
|
|
|
struct kvm_segment *var, int seg)
|
|
|
|
{
|
|
|
|
kvm_x86_ops->get_segment(vcpu, var, seg);
|
|
|
|
}
|
|
|
|
|
2010-02-10 15:21:32 +03:00
|
|
|
gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva, u32 *error)
|
|
|
|
{
|
|
|
|
u32 access = (kvm_x86_ops->get_cpl(vcpu) == 3) ? PFERR_USER_MASK : 0;
|
|
|
|
return vcpu->arch.mmu.gva_to_gpa(vcpu, gva, access, error);
|
|
|
|
}
|
|
|
|
|
|
|
|
gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva, u32 *error)
|
|
|
|
{
|
|
|
|
u32 access = (kvm_x86_ops->get_cpl(vcpu) == 3) ? PFERR_USER_MASK : 0;
|
|
|
|
access |= PFERR_FETCH_MASK;
|
|
|
|
return vcpu->arch.mmu.gva_to_gpa(vcpu, gva, access, error);
|
|
|
|
}
|
|
|
|
|
|
|
|
gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva, u32 *error)
|
|
|
|
{
|
|
|
|
u32 access = (kvm_x86_ops->get_cpl(vcpu) == 3) ? PFERR_USER_MASK : 0;
|
|
|
|
access |= PFERR_WRITE_MASK;
|
|
|
|
return vcpu->arch.mmu.gva_to_gpa(vcpu, gva, access, error);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* uses this to access any guest's mapped memory without checking CPL */
|
|
|
|
gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva, u32 *error)
|
|
|
|
{
|
|
|
|
return vcpu->arch.mmu.gva_to_gpa(vcpu, gva, 0, error);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int kvm_read_guest_virt_helper(gva_t addr, void *val, unsigned int bytes,
|
|
|
|
struct kvm_vcpu *vcpu, u32 access,
|
|
|
|
u32 *error)
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
{
|
|
|
|
void *data = val;
|
2007-12-21 03:18:22 +03:00
|
|
|
int r = X86EMUL_CONTINUE;
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
|
|
|
|
while (bytes) {
|
2010-02-10 15:21:32 +03:00
|
|
|
gpa_t gpa = vcpu->arch.mmu.gva_to_gpa(vcpu, addr, access, error);
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
unsigned offset = addr & (PAGE_SIZE-1);
|
2008-12-29 02:42:19 +03:00
|
|
|
unsigned toread = min(bytes, (unsigned)PAGE_SIZE - offset);
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
int ret;
|
|
|
|
|
2007-12-21 03:18:22 +03:00
|
|
|
if (gpa == UNMAPPED_GVA) {
|
|
|
|
r = X86EMUL_PROPAGATE_FAULT;
|
|
|
|
goto out;
|
|
|
|
}
|
2008-12-29 02:42:19 +03:00
|
|
|
ret = kvm_read_guest(vcpu->kvm, gpa, data, toread);
|
2007-12-21 03:18:22 +03:00
|
|
|
if (ret < 0) {
|
2010-04-28 20:15:35 +04:00
|
|
|
r = X86EMUL_IO_NEEDED;
|
2007-12-21 03:18:22 +03:00
|
|
|
goto out;
|
|
|
|
}
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
|
2008-12-29 02:42:19 +03:00
|
|
|
bytes -= toread;
|
|
|
|
data += toread;
|
|
|
|
addr += toread;
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
}
|
2007-12-21 03:18:22 +03:00
|
|
|
out:
|
|
|
|
return r;
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
}
|
2008-12-29 02:42:19 +03:00
|
|
|
|
2010-02-10 15:21:32 +03:00
|
|
|
/* used for instruction fetching */
|
|
|
|
static int kvm_fetch_guest_virt(gva_t addr, void *val, unsigned int bytes,
|
|
|
|
struct kvm_vcpu *vcpu, u32 *error)
|
|
|
|
{
|
|
|
|
u32 access = (kvm_x86_ops->get_cpl(vcpu) == 3) ? PFERR_USER_MASK : 0;
|
|
|
|
return kvm_read_guest_virt_helper(addr, val, bytes, vcpu,
|
|
|
|
access | PFERR_FETCH_MASK, error);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int kvm_read_guest_virt(gva_t addr, void *val, unsigned int bytes,
|
|
|
|
struct kvm_vcpu *vcpu, u32 *error)
|
|
|
|
{
|
|
|
|
u32 access = (kvm_x86_ops->get_cpl(vcpu) == 3) ? PFERR_USER_MASK : 0;
|
|
|
|
return kvm_read_guest_virt_helper(addr, val, bytes, vcpu, access,
|
|
|
|
error);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int kvm_read_guest_virt_system(gva_t addr, void *val, unsigned int bytes,
|
|
|
|
struct kvm_vcpu *vcpu, u32 *error)
|
|
|
|
{
|
|
|
|
return kvm_read_guest_virt_helper(addr, val, bytes, vcpu, 0, error);
|
|
|
|
}
|
|
|
|
|
2010-03-18 16:20:24 +03:00
|
|
|
static int kvm_write_guest_virt_system(gva_t addr, void *val,
|
2010-03-18 16:20:16 +03:00
|
|
|
unsigned int bytes,
|
2010-03-18 16:20:24 +03:00
|
|
|
struct kvm_vcpu *vcpu,
|
2010-03-18 16:20:16 +03:00
|
|
|
u32 *error)
|
2008-12-29 02:42:19 +03:00
|
|
|
{
|
|
|
|
void *data = val;
|
|
|
|
int r = X86EMUL_CONTINUE;
|
|
|
|
|
|
|
|
while (bytes) {
|
2010-03-18 16:20:24 +03:00
|
|
|
gpa_t gpa = vcpu->arch.mmu.gva_to_gpa(vcpu, addr,
|
|
|
|
PFERR_WRITE_MASK, error);
|
2008-12-29 02:42:19 +03:00
|
|
|
unsigned offset = addr & (PAGE_SIZE-1);
|
|
|
|
unsigned towrite = min(bytes, (unsigned)PAGE_SIZE - offset);
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
if (gpa == UNMAPPED_GVA) {
|
|
|
|
r = X86EMUL_PROPAGATE_FAULT;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
ret = kvm_write_guest(vcpu->kvm, gpa, data, towrite);
|
|
|
|
if (ret < 0) {
|
2010-04-28 20:15:35 +04:00
|
|
|
r = X86EMUL_IO_NEEDED;
|
2008-12-29 02:42:19 +03:00
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
|
|
|
bytes -= towrite;
|
|
|
|
data += towrite;
|
|
|
|
addr += towrite;
|
|
|
|
}
|
|
|
|
out:
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
static int emulator_read_emulated(unsigned long addr,
|
|
|
|
void *val,
|
|
|
|
unsigned int bytes,
|
2010-04-28 20:15:37 +04:00
|
|
|
unsigned int *error_code,
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
gpa_t gpa;
|
|
|
|
|
|
|
|
if (vcpu->mmio_read_completed) {
|
|
|
|
memcpy(val, vcpu->mmio_data, bytes);
|
2009-07-01 17:01:02 +04:00
|
|
|
trace_kvm_mmio(KVM_TRACE_MMIO_READ, bytes,
|
|
|
|
vcpu->mmio_phys_addr, *(u64 *)val);
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
vcpu->mmio_read_completed = 0;
|
|
|
|
return X86EMUL_CONTINUE;
|
|
|
|
}
|
|
|
|
|
2010-04-28 20:15:37 +04:00
|
|
|
gpa = kvm_mmu_gva_to_gpa_read(vcpu, addr, error_code);
|
2010-02-10 15:21:32 +03:00
|
|
|
|
2010-04-28 20:15:37 +04:00
|
|
|
if (gpa == UNMAPPED_GVA)
|
2010-02-10 15:21:32 +03:00
|
|
|
return X86EMUL_PROPAGATE_FAULT;
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
|
|
|
|
/* For APIC access vmexit */
|
|
|
|
if ((gpa & PAGE_MASK) == APIC_DEFAULT_PHYS_BASE)
|
|
|
|
goto mmio;
|
|
|
|
|
2010-02-10 15:21:32 +03:00
|
|
|
if (kvm_read_guest_virt(addr, val, bytes, vcpu, NULL)
|
2008-12-29 02:42:19 +03:00
|
|
|
== X86EMUL_CONTINUE)
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
return X86EMUL_CONTINUE;
|
|
|
|
|
|
|
|
mmio:
|
|
|
|
/*
|
|
|
|
* Is this MMIO handled locally?
|
|
|
|
*/
|
2009-07-01 17:01:02 +04:00
|
|
|
if (!vcpu_mmio_read(vcpu, gpa, bytes, val)) {
|
|
|
|
trace_kvm_mmio(KVM_TRACE_MMIO_READ, bytes, gpa, *(u64 *)val);
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
return X86EMUL_CONTINUE;
|
|
|
|
}
|
2009-07-01 17:01:02 +04:00
|
|
|
|
|
|
|
trace_kvm_mmio(KVM_TRACE_MMIO_READ_UNSATISFIED, bytes, gpa, 0);
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
|
|
|
|
vcpu->mmio_needed = 1;
|
2010-04-28 20:15:34 +04:00
|
|
|
vcpu->run->exit_reason = KVM_EXIT_MMIO;
|
|
|
|
vcpu->run->mmio.phys_addr = vcpu->mmio_phys_addr = gpa;
|
|
|
|
vcpu->run->mmio.len = vcpu->mmio_size = bytes;
|
|
|
|
vcpu->run->mmio.is_write = vcpu->mmio_is_write = 0;
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
|
2010-04-28 20:15:35 +04:00
|
|
|
return X86EMUL_IO_NEEDED;
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
}
|
|
|
|
|
2008-03-30 03:17:59 +04:00
|
|
|
int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
|
2008-03-02 15:06:05 +03:00
|
|
|
const void *val, int bytes)
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = kvm_write_guest(vcpu->kvm, gpa, val, bytes);
|
2008-03-02 15:06:05 +03:00
|
|
|
if (ret < 0)
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
return 0;
|
2008-12-02 03:32:05 +03:00
|
|
|
kvm_mmu_pte_write(vcpu, gpa, val, bytes, 1);
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int emulator_write_emulated_onepage(unsigned long addr,
|
|
|
|
const void *val,
|
|
|
|
unsigned int bytes,
|
2010-04-28 20:15:37 +04:00
|
|
|
unsigned int *error_code,
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
struct kvm_vcpu *vcpu)
|
|
|
|
{
|
2007-12-21 03:18:22 +03:00
|
|
|
gpa_t gpa;
|
|
|
|
|
2010-04-28 20:15:37 +04:00
|
|
|
gpa = kvm_mmu_gva_to_gpa_write(vcpu, addr, error_code);
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
|
2010-04-28 20:15:37 +04:00
|
|
|
if (gpa == UNMAPPED_GVA)
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
return X86EMUL_PROPAGATE_FAULT;
|
|
|
|
|
|
|
|
/* For APIC access vmexit */
|
|
|
|
if ((gpa & PAGE_MASK) == APIC_DEFAULT_PHYS_BASE)
|
|
|
|
goto mmio;
|
|
|
|
|
|
|
|
if (emulator_write_phys(vcpu, gpa, val, bytes))
|
|
|
|
return X86EMUL_CONTINUE;
|
|
|
|
|
|
|
|
mmio:
|
2009-07-01 17:01:02 +04:00
|
|
|
trace_kvm_mmio(KVM_TRACE_MMIO_WRITE, bytes, gpa, *(u64 *)val);
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
/*
|
|
|
|
* Is this MMIO handled locally?
|
|
|
|
*/
|
2009-06-29 23:24:32 +04:00
|
|
|
if (!vcpu_mmio_write(vcpu, gpa, bytes, val))
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
return X86EMUL_CONTINUE;
|
|
|
|
|
|
|
|
vcpu->mmio_needed = 1;
|
2010-04-28 20:15:34 +04:00
|
|
|
vcpu->run->exit_reason = KVM_EXIT_MMIO;
|
|
|
|
vcpu->run->mmio.phys_addr = vcpu->mmio_phys_addr = gpa;
|
|
|
|
vcpu->run->mmio.len = vcpu->mmio_size = bytes;
|
|
|
|
vcpu->run->mmio.is_write = vcpu->mmio_is_write = 1;
|
|
|
|
memcpy(vcpu->run->mmio.data, val, bytes);
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
|
|
|
|
return X86EMUL_CONTINUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
int emulator_write_emulated(unsigned long addr,
|
2010-04-13 11:21:56 +04:00
|
|
|
const void *val,
|
|
|
|
unsigned int bytes,
|
2010-04-28 20:15:37 +04:00
|
|
|
unsigned int *error_code,
|
2010-04-13 11:21:56 +04:00
|
|
|
struct kvm_vcpu *vcpu)
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
{
|
|
|
|
/* Crossing a page boundary? */
|
|
|
|
if (((addr + bytes - 1) ^ addr) & PAGE_MASK) {
|
|
|
|
int rc, now;
|
|
|
|
|
|
|
|
now = -addr & ~PAGE_MASK;
|
2010-04-28 20:15:37 +04:00
|
|
|
rc = emulator_write_emulated_onepage(addr, val, now, error_code,
|
|
|
|
vcpu);
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
if (rc != X86EMUL_CONTINUE)
|
|
|
|
return rc;
|
|
|
|
addr += now;
|
|
|
|
val += now;
|
|
|
|
bytes -= now;
|
|
|
|
}
|
2010-04-28 20:15:37 +04:00
|
|
|
return emulator_write_emulated_onepage(addr, val, bytes, error_code,
|
|
|
|
vcpu);
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
}
|
|
|
|
|
2010-03-15 14:59:54 +03:00
|
|
|
#define CMPXCHG_TYPE(t, ptr, old, new) \
|
|
|
|
(cmpxchg((t *)(ptr), *(t *)(old), *(t *)(new)) == *(t *)(old))
|
|
|
|
|
|
|
|
#ifdef CONFIG_X86_64
|
|
|
|
# define CMPXCHG64(ptr, old, new) CMPXCHG_TYPE(u64, ptr, old, new)
|
|
|
|
#else
|
|
|
|
# define CMPXCHG64(ptr, old, new) \
|
2010-03-20 12:14:13 +03:00
|
|
|
(cmpxchg64((u64 *)(ptr), *(u64 *)(old), *(u64 *)(new)) == *(u64 *)(old))
|
2010-03-15 14:59:54 +03:00
|
|
|
#endif
|
|
|
|
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
static int emulator_cmpxchg_emulated(unsigned long addr,
|
|
|
|
const void *old,
|
|
|
|
const void *new,
|
|
|
|
unsigned int bytes,
|
2010-04-28 20:15:37 +04:00
|
|
|
unsigned int *error_code,
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
struct kvm_vcpu *vcpu)
|
|
|
|
{
|
2010-03-15 14:59:54 +03:00
|
|
|
gpa_t gpa;
|
|
|
|
struct page *page;
|
|
|
|
char *kaddr;
|
|
|
|
bool exchanged;
|
2007-12-12 18:46:12 +03:00
|
|
|
|
2010-03-15 14:59:54 +03:00
|
|
|
/* guests cmpxchg8b have to be emulated atomically */
|
|
|
|
if (bytes > 8 || (bytes & (bytes - 1)))
|
|
|
|
goto emul_write;
|
2007-12-21 03:18:22 +03:00
|
|
|
|
2010-03-15 14:59:54 +03:00
|
|
|
gpa = kvm_mmu_gva_to_gpa_write(vcpu, addr, NULL);
|
2007-12-12 18:46:12 +03:00
|
|
|
|
2010-03-15 14:59:54 +03:00
|
|
|
if (gpa == UNMAPPED_GVA ||
|
|
|
|
(gpa & PAGE_MASK) == APIC_DEFAULT_PHYS_BASE)
|
|
|
|
goto emul_write;
|
2007-12-12 18:46:12 +03:00
|
|
|
|
2010-03-15 14:59:54 +03:00
|
|
|
if (((gpa + bytes - 1) & PAGE_MASK) != (gpa & PAGE_MASK))
|
|
|
|
goto emul_write;
|
2008-02-10 19:04:15 +03:00
|
|
|
|
2010-03-15 14:59:54 +03:00
|
|
|
page = gfn_to_page(vcpu->kvm, gpa >> PAGE_SHIFT);
|
2008-02-10 19:04:15 +03:00
|
|
|
|
2010-03-15 14:59:54 +03:00
|
|
|
kaddr = kmap_atomic(page, KM_USER0);
|
|
|
|
kaddr += offset_in_page(gpa);
|
|
|
|
switch (bytes) {
|
|
|
|
case 1:
|
|
|
|
exchanged = CMPXCHG_TYPE(u8, kaddr, old, new);
|
|
|
|
break;
|
|
|
|
case 2:
|
|
|
|
exchanged = CMPXCHG_TYPE(u16, kaddr, old, new);
|
|
|
|
break;
|
|
|
|
case 4:
|
|
|
|
exchanged = CMPXCHG_TYPE(u32, kaddr, old, new);
|
|
|
|
break;
|
|
|
|
case 8:
|
|
|
|
exchanged = CMPXCHG64(kaddr, old, new);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
BUG();
|
2007-12-12 18:46:12 +03:00
|
|
|
}
|
2010-03-15 14:59:54 +03:00
|
|
|
kunmap_atomic(kaddr, KM_USER0);
|
|
|
|
kvm_release_page_dirty(page);
|
|
|
|
|
|
|
|
if (!exchanged)
|
|
|
|
return X86EMUL_CMPXCHG_FAILED;
|
|
|
|
|
2010-04-13 11:21:56 +04:00
|
|
|
kvm_mmu_pte_write(vcpu, gpa, new, bytes, 1);
|
|
|
|
|
|
|
|
return X86EMUL_CONTINUE;
|
2010-03-15 14:59:55 +03:00
|
|
|
|
2008-03-30 03:17:59 +04:00
|
|
|
emul_write:
|
2010-03-15 14:59:54 +03:00
|
|
|
printk_once(KERN_WARNING "kvm: emulating exchange as write\n");
|
2007-12-12 18:46:12 +03:00
|
|
|
|
2010-04-28 20:15:37 +04:00
|
|
|
return emulator_write_emulated(addr, new, bytes, error_code, vcpu);
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
}
|
|
|
|
|
2010-03-18 16:20:23 +03:00
|
|
|
static int kernel_pio(struct kvm_vcpu *vcpu, void *pd)
|
|
|
|
{
|
|
|
|
/* TODO: String I/O for in kernel device */
|
|
|
|
int r;
|
|
|
|
|
|
|
|
if (vcpu->arch.pio.in)
|
|
|
|
r = kvm_io_bus_read(vcpu->kvm, KVM_PIO_BUS, vcpu->arch.pio.port,
|
|
|
|
vcpu->arch.pio.size, pd);
|
|
|
|
else
|
|
|
|
r = kvm_io_bus_write(vcpu->kvm, KVM_PIO_BUS,
|
|
|
|
vcpu->arch.pio.port, vcpu->arch.pio.size,
|
|
|
|
pd);
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
static int emulator_pio_in_emulated(int size, unsigned short port, void *val,
|
|
|
|
unsigned int count, struct kvm_vcpu *vcpu)
|
|
|
|
{
|
2010-03-18 16:20:24 +03:00
|
|
|
if (vcpu->arch.pio.count)
|
2010-03-18 16:20:23 +03:00
|
|
|
goto data_avail;
|
|
|
|
|
|
|
|
trace_kvm_pio(1, port, size, 1);
|
|
|
|
|
|
|
|
vcpu->arch.pio.port = port;
|
|
|
|
vcpu->arch.pio.in = 1;
|
2010-03-18 16:20:24 +03:00
|
|
|
vcpu->arch.pio.count = count;
|
2010-03-18 16:20:23 +03:00
|
|
|
vcpu->arch.pio.size = size;
|
|
|
|
|
|
|
|
if (!kernel_pio(vcpu, vcpu->arch.pio_data)) {
|
|
|
|
data_avail:
|
|
|
|
memcpy(val, vcpu->arch.pio_data, size * count);
|
2010-03-18 16:20:24 +03:00
|
|
|
vcpu->arch.pio.count = 0;
|
2010-03-18 16:20:23 +03:00
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
vcpu->run->exit_reason = KVM_EXIT_IO;
|
|
|
|
vcpu->run->io.direction = KVM_EXIT_IO_IN;
|
|
|
|
vcpu->run->io.size = size;
|
|
|
|
vcpu->run->io.data_offset = KVM_PIO_PAGE_OFFSET * PAGE_SIZE;
|
|
|
|
vcpu->run->io.count = count;
|
|
|
|
vcpu->run->io.port = port;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int emulator_pio_out_emulated(int size, unsigned short port,
|
|
|
|
const void *val, unsigned int count,
|
|
|
|
struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
trace_kvm_pio(0, port, size, 1);
|
|
|
|
|
|
|
|
vcpu->arch.pio.port = port;
|
|
|
|
vcpu->arch.pio.in = 0;
|
2010-03-18 16:20:24 +03:00
|
|
|
vcpu->arch.pio.count = count;
|
2010-03-18 16:20:23 +03:00
|
|
|
vcpu->arch.pio.size = size;
|
|
|
|
|
|
|
|
memcpy(vcpu->arch.pio_data, val, size * count);
|
|
|
|
|
|
|
|
if (!kernel_pio(vcpu, vcpu->arch.pio_data)) {
|
2010-03-18 16:20:24 +03:00
|
|
|
vcpu->arch.pio.count = 0;
|
2010-03-18 16:20:23 +03:00
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
vcpu->run->exit_reason = KVM_EXIT_IO;
|
|
|
|
vcpu->run->io.direction = KVM_EXIT_IO_OUT;
|
|
|
|
vcpu->run->io.size = size;
|
|
|
|
vcpu->run->io.data_offset = KVM_PIO_PAGE_OFFSET * PAGE_SIZE;
|
|
|
|
vcpu->run->io.count = count;
|
|
|
|
vcpu->run->io.port = port;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
static unsigned long get_segment_base(struct kvm_vcpu *vcpu, int seg)
|
|
|
|
{
|
|
|
|
return kvm_x86_ops->get_segment_base(vcpu, seg);
|
|
|
|
}
|
|
|
|
|
|
|
|
int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address)
|
|
|
|
{
|
2008-09-23 20:18:35 +04:00
|
|
|
kvm_mmu_invlpg(vcpu, address);
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
return X86EMUL_CONTINUE;
|
|
|
|
}
|
|
|
|
|
|
|
|
int emulate_clts(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
2009-12-29 19:07:30 +03:00
|
|
|
kvm_x86_ops->set_cr0(vcpu, kvm_read_cr0_bits(vcpu, ~X86_CR0_TS));
|
2010-01-21 16:31:47 +03:00
|
|
|
kvm_x86_ops->fpu_activate(vcpu);
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
return X86EMUL_CONTINUE;
|
|
|
|
}
|
|
|
|
|
2010-04-28 20:15:27 +04:00
|
|
|
int emulator_get_dr(int dr, unsigned long *dest, struct kvm_vcpu *vcpu)
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
{
|
2010-04-28 20:15:32 +04:00
|
|
|
return _kvm_get_dr(vcpu, dr, dest);
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
}
|
|
|
|
|
2010-04-28 20:15:27 +04:00
|
|
|
int emulator_set_dr(int dr, unsigned long value, struct kvm_vcpu *vcpu)
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
{
|
2010-04-28 20:15:32 +04:00
|
|
|
|
|
|
|
return __kvm_set_dr(vcpu, dr, value);
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
}
|
|
|
|
|
2010-03-18 16:20:03 +03:00
|
|
|
static u64 mk_cr_64(u64 curr_cr, u32 new_val)
|
2008-06-27 21:58:02 +04:00
|
|
|
{
|
2010-03-18 16:20:03 +03:00
|
|
|
return (curr_cr & ~((1ULL << 32) - 1)) | new_val;
|
2008-06-27 21:58:02 +04:00
|
|
|
}
|
|
|
|
|
2010-03-18 16:20:03 +03:00
|
|
|
static unsigned long emulator_get_cr(int cr, struct kvm_vcpu *vcpu)
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
{
|
2010-03-18 16:20:03 +03:00
|
|
|
unsigned long value;
|
|
|
|
|
|
|
|
switch (cr) {
|
|
|
|
case 0:
|
|
|
|
value = kvm_read_cr0(vcpu);
|
|
|
|
break;
|
|
|
|
case 2:
|
|
|
|
value = vcpu->arch.cr2;
|
|
|
|
break;
|
|
|
|
case 3:
|
|
|
|
value = vcpu->arch.cr3;
|
|
|
|
break;
|
|
|
|
case 4:
|
|
|
|
value = kvm_read_cr4(vcpu);
|
|
|
|
break;
|
|
|
|
case 8:
|
|
|
|
value = kvm_get_cr8(vcpu);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
vcpu_printf(vcpu, "%s: unexpected cr %u\n", __func__, cr);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
return value;
|
|
|
|
}
|
|
|
|
|
2010-04-28 20:15:31 +04:00
|
|
|
static int emulator_set_cr(int cr, unsigned long val, struct kvm_vcpu *vcpu)
|
2010-03-18 16:20:03 +03:00
|
|
|
{
|
2010-04-28 20:15:31 +04:00
|
|
|
int res = 0;
|
|
|
|
|
2010-03-18 16:20:03 +03:00
|
|
|
switch (cr) {
|
|
|
|
case 0:
|
2010-06-10 18:02:14 +04:00
|
|
|
res = kvm_set_cr0(vcpu, mk_cr_64(kvm_read_cr0(vcpu), val));
|
2010-03-18 16:20:03 +03:00
|
|
|
break;
|
|
|
|
case 2:
|
|
|
|
vcpu->arch.cr2 = val;
|
|
|
|
break;
|
|
|
|
case 3:
|
2010-06-10 18:02:16 +04:00
|
|
|
res = kvm_set_cr3(vcpu, val);
|
2010-03-18 16:20:03 +03:00
|
|
|
break;
|
|
|
|
case 4:
|
2010-06-10 18:02:15 +04:00
|
|
|
res = kvm_set_cr4(vcpu, mk_cr_64(kvm_read_cr4(vcpu), val));
|
2010-03-18 16:20:03 +03:00
|
|
|
break;
|
|
|
|
case 8:
|
2010-04-28 20:15:31 +04:00
|
|
|
res = __kvm_set_cr8(vcpu, val & 0xfUL);
|
2010-03-18 16:20:03 +03:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
vcpu_printf(vcpu, "%s: unexpected cr %u\n", __func__, cr);
|
2010-04-28 20:15:31 +04:00
|
|
|
res = -1;
|
2010-03-18 16:20:03 +03:00
|
|
|
}
|
2010-04-28 20:15:31 +04:00
|
|
|
|
|
|
|
return res;
|
2010-03-18 16:20:03 +03:00
|
|
|
}
|
|
|
|
|
2010-03-18 16:20:05 +03:00
|
|
|
static int emulator_get_cpl(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
return kvm_x86_ops->get_cpl(vcpu);
|
|
|
|
}
|
|
|
|
|
2010-03-18 16:20:16 +03:00
|
|
|
static void emulator_get_gdt(struct desc_ptr *dt, struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
kvm_x86_ops->get_gdt(vcpu, dt);
|
|
|
|
}
|
|
|
|
|
2010-04-28 20:15:29 +04:00
|
|
|
static unsigned long emulator_get_cached_segment_base(int seg,
|
|
|
|
struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
return get_segment_base(vcpu, seg);
|
|
|
|
}
|
|
|
|
|
2010-03-18 16:20:16 +03:00
|
|
|
static bool emulator_get_cached_descriptor(struct desc_struct *desc, int seg,
|
|
|
|
struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
struct kvm_segment var;
|
|
|
|
|
|
|
|
kvm_get_segment(vcpu, &var, seg);
|
|
|
|
|
|
|
|
if (var.unusable)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
if (var.g)
|
|
|
|
var.limit >>= 12;
|
|
|
|
set_desc_limit(desc, var.limit);
|
|
|
|
set_desc_base(desc, (unsigned long)var.base);
|
|
|
|
desc->type = var.type;
|
|
|
|
desc->s = var.s;
|
|
|
|
desc->dpl = var.dpl;
|
|
|
|
desc->p = var.present;
|
|
|
|
desc->avl = var.avl;
|
|
|
|
desc->l = var.l;
|
|
|
|
desc->d = var.db;
|
|
|
|
desc->g = var.g;
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void emulator_set_cached_descriptor(struct desc_struct *desc, int seg,
|
|
|
|
struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
struct kvm_segment var;
|
|
|
|
|
|
|
|
/* needed to preserve selector */
|
|
|
|
kvm_get_segment(vcpu, &var, seg);
|
|
|
|
|
|
|
|
var.base = get_desc_base(desc);
|
|
|
|
var.limit = get_desc_limit(desc);
|
|
|
|
if (desc->g)
|
|
|
|
var.limit = (var.limit << 12) | 0xfff;
|
|
|
|
var.type = desc->type;
|
|
|
|
var.present = desc->p;
|
|
|
|
var.dpl = desc->dpl;
|
|
|
|
var.db = desc->d;
|
|
|
|
var.s = desc->s;
|
|
|
|
var.l = desc->l;
|
|
|
|
var.g = desc->g;
|
|
|
|
var.avl = desc->avl;
|
|
|
|
var.present = desc->p;
|
|
|
|
var.unusable = !var.present;
|
|
|
|
var.padding = 0;
|
|
|
|
|
|
|
|
kvm_set_segment(vcpu, &var, seg);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
static u16 emulator_get_segment_selector(int seg, struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
struct kvm_segment kvm_seg;
|
|
|
|
|
|
|
|
kvm_get_segment(vcpu, &kvm_seg, seg);
|
|
|
|
return kvm_seg.selector;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void emulator_set_segment_selector(u16 sel, int seg,
|
|
|
|
struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
struct kvm_segment kvm_seg;
|
|
|
|
|
|
|
|
kvm_get_segment(vcpu, &kvm_seg, seg);
|
|
|
|
kvm_seg.selector = sel;
|
|
|
|
kvm_set_segment(vcpu, &kvm_seg, seg);
|
|
|
|
}
|
|
|
|
|
2008-02-19 21:25:50 +03:00
|
|
|
static struct x86_emulate_ops emulate_ops = {
|
2010-02-10 15:21:32 +03:00
|
|
|
.read_std = kvm_read_guest_virt_system,
|
2010-03-18 16:20:16 +03:00
|
|
|
.write_std = kvm_write_guest_virt_system,
|
2010-02-10 15:21:32 +03:00
|
|
|
.fetch = kvm_fetch_guest_virt,
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
.read_emulated = emulator_read_emulated,
|
|
|
|
.write_emulated = emulator_write_emulated,
|
|
|
|
.cmpxchg_emulated = emulator_cmpxchg_emulated,
|
2010-03-18 16:20:23 +03:00
|
|
|
.pio_in_emulated = emulator_pio_in_emulated,
|
|
|
|
.pio_out_emulated = emulator_pio_out_emulated,
|
2010-03-18 16:20:16 +03:00
|
|
|
.get_cached_descriptor = emulator_get_cached_descriptor,
|
|
|
|
.set_cached_descriptor = emulator_set_cached_descriptor,
|
|
|
|
.get_segment_selector = emulator_get_segment_selector,
|
|
|
|
.set_segment_selector = emulator_set_segment_selector,
|
2010-04-28 20:15:29 +04:00
|
|
|
.get_cached_segment_base = emulator_get_cached_segment_base,
|
2010-03-18 16:20:16 +03:00
|
|
|
.get_gdt = emulator_get_gdt,
|
2010-03-18 16:20:03 +03:00
|
|
|
.get_cr = emulator_get_cr,
|
|
|
|
.set_cr = emulator_set_cr,
|
2010-03-18 16:20:05 +03:00
|
|
|
.cpl = emulator_get_cpl,
|
2010-04-28 20:15:27 +04:00
|
|
|
.get_dr = emulator_get_dr,
|
|
|
|
.set_dr = emulator_set_dr,
|
2010-04-28 20:15:28 +04:00
|
|
|
.set_msr = kvm_set_msr,
|
|
|
|
.get_msr = kvm_get_msr,
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
};
|
|
|
|
|
2008-06-27 21:58:02 +04:00
|
|
|
static void cache_all_regs(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
kvm_register_read(vcpu, VCPU_REGS_RAX);
|
|
|
|
kvm_register_read(vcpu, VCPU_REGS_RSP);
|
|
|
|
kvm_register_read(vcpu, VCPU_REGS_RIP);
|
|
|
|
vcpu->arch.regs_dirty = ~0;
|
|
|
|
}
|
|
|
|
|
2010-04-28 20:15:43 +04:00
|
|
|
static void toggle_interruptibility(struct kvm_vcpu *vcpu, u32 mask)
|
|
|
|
{
|
|
|
|
u32 int_shadow = kvm_x86_ops->get_interrupt_shadow(vcpu, mask);
|
|
|
|
/*
|
|
|
|
* an sti; sti; sequence only disable interrupts for the first
|
|
|
|
* instruction. So, if the last instruction, be it emulated or
|
|
|
|
* not, left the system with the INT_STI flag enabled, it
|
|
|
|
* means that the last instruction is an sti. We should not
|
|
|
|
* leave the flag on in this case. The same goes for mov ss
|
|
|
|
*/
|
|
|
|
if (!(int_shadow & mask))
|
|
|
|
kvm_x86_ops->set_interrupt_shadow(vcpu, mask);
|
|
|
|
}
|
|
|
|
|
2010-04-28 20:15:44 +04:00
|
|
|
static void inject_emulated_exception(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
struct x86_emulate_ctxt *ctxt = &vcpu->arch.emulate_ctxt;
|
|
|
|
if (ctxt->exception == PF_VECTOR)
|
|
|
|
kvm_inject_page_fault(vcpu, ctxt->cr2, ctxt->error_code);
|
|
|
|
else if (ctxt->error_code_valid)
|
|
|
|
kvm_queue_exception_e(vcpu, ctxt->exception, ctxt->error_code);
|
|
|
|
else
|
|
|
|
kvm_queue_exception(vcpu, ctxt->exception);
|
|
|
|
}
|
|
|
|
|
2010-05-10 12:16:56 +04:00
|
|
|
static int handle_emulation_failure(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
++vcpu->stat.insn_emulation_fail;
|
|
|
|
trace_kvm_emulate_insn_failed(vcpu);
|
|
|
|
vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
|
|
|
|
vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_EMULATION;
|
|
|
|
vcpu->run->internal.ndata = 0;
|
|
|
|
kvm_queue_exception(vcpu, UD_VECTOR);
|
|
|
|
return EMULATE_FAIL;
|
|
|
|
}
|
|
|
|
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
int emulate_instruction(struct kvm_vcpu *vcpu,
|
|
|
|
unsigned long cr2,
|
|
|
|
u16 error_code,
|
KVM: x86 emulator: Only allow VMCALL/VMMCALL trapped by #UD
When executing a test program called "crashme", we found the KVM guest cannot
survive more than ten seconds, then encounterd kernel panic. The basic concept
of "crashme" is generating random assembly code and trying to execute it.
After some fixes on emulator insn validity judgment, we found it's hard to
get the current emulator handle the invalid instructions correctly, for the
#UD trap for hypercall patching caused troubles. The problem is, if the opcode
itself was OK, but combination of opcode and modrm_reg was invalid, and one
operand of the opcode was memory (SrcMem or DstMem), the emulator will fetch
the memory operand first rather than checking the validity, and may encounter
an error there. For example, ".byte 0xfe, 0x34, 0xcd" has this problem.
In the patch, we simply check that if the invalid opcode wasn't vmcall/vmmcall,
then return from emulate_instruction() and inject a #UD to guest. With the
patch, the guest had been running for more than 12 hours.
Signed-off-by: Feng (Eric) Liu <eric.e.liu@intel.com>
Signed-off-by: Sheng Yang <sheng.yang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-02 09:49:22 +03:00
|
|
|
int emulation_type)
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
{
|
2010-04-28 20:15:43 +04:00
|
|
|
int r;
|
2010-04-28 20:15:42 +04:00
|
|
|
struct decode_cache *c = &vcpu->arch.emulate_ctxt.decode;
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
|
2008-07-03 15:59:22 +04:00
|
|
|
kvm_clear_exception_queue(vcpu);
|
2007-12-13 18:50:52 +03:00
|
|
|
vcpu->arch.mmio_fault_cr2 = cr2;
|
2008-06-27 21:58:02 +04:00
|
|
|
/*
|
2009-08-12 16:04:37 +04:00
|
|
|
* TODO: fix emulate.c to use guest_read/write_register
|
2008-06-27 21:58:02 +04:00
|
|
|
* instead of direct ->regs accesses, can save hundred cycles
|
|
|
|
* on Intel for instructions that don't read/change RSP, for
|
|
|
|
* for example.
|
|
|
|
*/
|
|
|
|
cache_all_regs(vcpu);
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
|
KVM: x86 emulator: Only allow VMCALL/VMMCALL trapped by #UD
When executing a test program called "crashme", we found the KVM guest cannot
survive more than ten seconds, then encounterd kernel panic. The basic concept
of "crashme" is generating random assembly code and trying to execute it.
After some fixes on emulator insn validity judgment, we found it's hard to
get the current emulator handle the invalid instructions correctly, for the
#UD trap for hypercall patching caused troubles. The problem is, if the opcode
itself was OK, but combination of opcode and modrm_reg was invalid, and one
operand of the opcode was memory (SrcMem or DstMem), the emulator will fetch
the memory operand first rather than checking the validity, and may encounter
an error there. For example, ".byte 0xfe, 0x34, 0xcd" has this problem.
In the patch, we simply check that if the invalid opcode wasn't vmcall/vmmcall,
then return from emulate_instruction() and inject a #UD to guest. With the
patch, the guest had been running for more than 12 hours.
Signed-off-by: Feng (Eric) Liu <eric.e.liu@intel.com>
Signed-off-by: Sheng Yang <sheng.yang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-02 09:49:22 +03:00
|
|
|
if (!(emulation_type & EMULTYPE_NO_DECODE)) {
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
int cs_db, cs_l;
|
|
|
|
kvm_x86_ops->get_cs_db_l_bits(vcpu, &cs_db, &cs_l);
|
|
|
|
|
2007-12-13 18:50:52 +03:00
|
|
|
vcpu->arch.emulate_ctxt.vcpu = vcpu;
|
2010-02-23 19:47:59 +03:00
|
|
|
vcpu->arch.emulate_ctxt.eflags = kvm_x86_ops->get_rflags(vcpu);
|
2010-03-18 16:20:06 +03:00
|
|
|
vcpu->arch.emulate_ctxt.eip = kvm_rip_read(vcpu);
|
2007-12-13 18:50:52 +03:00
|
|
|
vcpu->arch.emulate_ctxt.mode =
|
2010-02-10 15:21:31 +03:00
|
|
|
(!is_protmode(vcpu)) ? X86EMUL_MODE_REAL :
|
2007-12-13 18:50:52 +03:00
|
|
|
(vcpu->arch.emulate_ctxt.eflags & X86_EFLAGS_VM)
|
2010-02-10 15:21:31 +03:00
|
|
|
? X86EMUL_MODE_VM86 : cs_l
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
? X86EMUL_MODE_PROT64 : cs_db
|
|
|
|
? X86EMUL_MODE_PROT32 : X86EMUL_MODE_PROT16;
|
2010-04-28 20:15:42 +04:00
|
|
|
memset(c, 0, sizeof(struct decode_cache));
|
|
|
|
memcpy(c->regs, vcpu->arch.regs, sizeof c->regs);
|
2010-04-28 20:15:43 +04:00
|
|
|
vcpu->arch.emulate_ctxt.interruptibility = 0;
|
2010-04-28 20:15:44 +04:00
|
|
|
vcpu->arch.emulate_ctxt.exception = -1;
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
|
2007-12-13 18:50:52 +03:00
|
|
|
r = x86_decode_insn(&vcpu->arch.emulate_ctxt, &emulate_ops);
|
2010-04-11 14:05:16 +04:00
|
|
|
trace_kvm_emulate_insn_start(vcpu);
|
KVM: x86 emulator: Only allow VMCALL/VMMCALL trapped by #UD
When executing a test program called "crashme", we found the KVM guest cannot
survive more than ten seconds, then encounterd kernel panic. The basic concept
of "crashme" is generating random assembly code and trying to execute it.
After some fixes on emulator insn validity judgment, we found it's hard to
get the current emulator handle the invalid instructions correctly, for the
#UD trap for hypercall patching caused troubles. The problem is, if the opcode
itself was OK, but combination of opcode and modrm_reg was invalid, and one
operand of the opcode was memory (SrcMem or DstMem), the emulator will fetch
the memory operand first rather than checking the validity, and may encounter
an error there. For example, ".byte 0xfe, 0x34, 0xcd" has this problem.
In the patch, we simply check that if the invalid opcode wasn't vmcall/vmmcall,
then return from emulate_instruction() and inject a #UD to guest. With the
patch, the guest had been running for more than 12 hours.
Signed-off-by: Feng (Eric) Liu <eric.e.liu@intel.com>
Signed-off-by: Sheng Yang <sheng.yang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-02 09:49:22 +03:00
|
|
|
|
2009-06-17 17:50:31 +04:00
|
|
|
/* Only allow emulation of specific instructions on #UD
|
|
|
|
* (namely VMMCALL, sysenter, sysexit, syscall)*/
|
|
|
|
if (emulation_type & EMULTYPE_TRAP_UD) {
|
|
|
|
if (!c->twobyte)
|
|
|
|
return EMULATE_FAIL;
|
|
|
|
switch (c->b) {
|
|
|
|
case 0x01: /* VMMCALL */
|
|
|
|
if (c->modrm_mod != 3 || c->modrm_rm != 1)
|
|
|
|
return EMULATE_FAIL;
|
|
|
|
break;
|
|
|
|
case 0x34: /* sysenter */
|
|
|
|
case 0x35: /* sysexit */
|
|
|
|
if (c->modrm_mod != 0 || c->modrm_rm != 0)
|
|
|
|
return EMULATE_FAIL;
|
|
|
|
break;
|
|
|
|
case 0x05: /* syscall */
|
|
|
|
if (c->modrm_mod != 0 || c->modrm_rm != 0)
|
|
|
|
return EMULATE_FAIL;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return EMULATE_FAIL;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!(c->modrm_reg == 0 || c->modrm_reg == 3))
|
|
|
|
return EMULATE_FAIL;
|
|
|
|
}
|
KVM: x86 emulator: Only allow VMCALL/VMMCALL trapped by #UD
When executing a test program called "crashme", we found the KVM guest cannot
survive more than ten seconds, then encounterd kernel panic. The basic concept
of "crashme" is generating random assembly code and trying to execute it.
After some fixes on emulator insn validity judgment, we found it's hard to
get the current emulator handle the invalid instructions correctly, for the
#UD trap for hypercall patching caused troubles. The problem is, if the opcode
itself was OK, but combination of opcode and modrm_reg was invalid, and one
operand of the opcode was memory (SrcMem or DstMem), the emulator will fetch
the memory operand first rather than checking the validity, and may encounter
an error there. For example, ".byte 0xfe, 0x34, 0xcd" has this problem.
In the patch, we simply check that if the invalid opcode wasn't vmcall/vmmcall,
then return from emulate_instruction() and inject a #UD to guest. With the
patch, the guest had been running for more than 12 hours.
Signed-off-by: Feng (Eric) Liu <eric.e.liu@intel.com>
Signed-off-by: Sheng Yang <sheng.yang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-01-02 09:49:22 +03:00
|
|
|
|
2007-11-18 16:17:51 +03:00
|
|
|
++vcpu->stat.insn_emulation;
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
if (r) {
|
|
|
|
if (kvm_mmu_unprotect_page_virt(vcpu, cr2))
|
|
|
|
return EMULATE_DONE;
|
2010-05-10 12:16:56 +04:00
|
|
|
if (emulation_type & EMULTYPE_SKIP)
|
|
|
|
return EMULATE_FAIL;
|
|
|
|
return handle_emulation_failure(vcpu);
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-04-12 14:36:57 +04:00
|
|
|
if (emulation_type & EMULTYPE_SKIP) {
|
|
|
|
kvm_rip_write(vcpu, vcpu->arch.emulate_ctxt.decode.eip);
|
|
|
|
return EMULATE_DONE;
|
|
|
|
}
|
|
|
|
|
2010-04-28 20:15:42 +04:00
|
|
|
/* this is needed for vmware backdor interface to work since it
|
|
|
|
changes registers values during IO operation */
|
|
|
|
memcpy(c->regs, vcpu->arch.regs, sizeof c->regs);
|
|
|
|
|
2010-03-18 16:20:26 +03:00
|
|
|
restart:
|
2007-12-13 18:50:52 +03:00
|
|
|
r = x86_emulate_insn(&vcpu->arch.emulate_ctxt, &emulate_ops);
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
|
2010-04-28 20:15:35 +04:00
|
|
|
if (r) { /* emulation failed */
|
|
|
|
/*
|
|
|
|
* if emulation was due to access to shadowed page table
|
|
|
|
* and it failed try to unshadow page and re-entetr the
|
|
|
|
* guest to let CPU execute the instruction.
|
|
|
|
*/
|
|
|
|
if (kvm_mmu_unprotect_page_virt(vcpu, cr2))
|
|
|
|
return EMULATE_DONE;
|
|
|
|
|
2010-05-10 12:16:56 +04:00
|
|
|
return handle_emulation_failure(vcpu);
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
}
|
|
|
|
|
2010-04-28 20:15:43 +04:00
|
|
|
toggle_interruptibility(vcpu, vcpu->arch.emulate_ctxt.interruptibility);
|
2010-04-28 20:15:40 +04:00
|
|
|
kvm_x86_ops->set_rflags(vcpu, vcpu->arch.emulate_ctxt.eflags);
|
2010-04-28 20:15:42 +04:00
|
|
|
memcpy(vcpu->arch.regs, c->regs, sizeof c->regs);
|
2010-04-28 20:15:39 +04:00
|
|
|
kvm_rip_write(vcpu, vcpu->arch.emulate_ctxt.eip);
|
2010-04-28 20:15:38 +04:00
|
|
|
|
2010-04-28 20:15:44 +04:00
|
|
|
if (vcpu->arch.emulate_ctxt.exception >= 0) {
|
|
|
|
inject_emulated_exception(vcpu);
|
|
|
|
return EMULATE_DONE;
|
|
|
|
}
|
|
|
|
|
2010-04-28 20:15:38 +04:00
|
|
|
if (vcpu->arch.pio.count) {
|
|
|
|
if (!vcpu->arch.pio.in)
|
|
|
|
vcpu->arch.pio.count = 0;
|
|
|
|
return EMULATE_DO_MMIO;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (vcpu->mmio_needed) {
|
|
|
|
if (vcpu->mmio_is_write)
|
|
|
|
vcpu->mmio_needed = 0;
|
|
|
|
return EMULATE_DO_MMIO;
|
|
|
|
}
|
|
|
|
|
2010-03-18 16:20:26 +03:00
|
|
|
if (vcpu->arch.emulate_ctxt.restart)
|
|
|
|
goto restart;
|
2010-02-10 15:21:33 +03:00
|
|
|
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
return EMULATE_DONE;
|
2007-10-30 20:44:25 +03:00
|
|
|
}
|
KVM: Portability: Move x86 emulation and mmio device hook to x86.c
This patch moves the following functions to from kvm_main.c to x86.c:
emulator_read/write_std, vcpu_find_pervcpu_dev, vcpu_find_mmio_dev,
emulator_read/write_emulated, emulator_write_phys,
emulator_write_emulated_onepage, emulator_cmpxchg_emulated,
get_setment_base, emulate_invlpg, emulate_clts, emulator_get/set_dr,
kvm_report_emulation_failure, emulate_instruction
The following data type is moved to x86.c:
struct x86_emulate_ops emulate_ops
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Acked-by: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2007-10-30 20:44:21 +03:00
|
|
|
EXPORT_SYMBOL_GPL(emulate_instruction);
|
2007-10-30 20:44:25 +03:00
|
|
|
|
2010-03-18 16:20:23 +03:00
|
|
|
int kvm_fast_pio_out(struct kvm_vcpu *vcpu, int size, unsigned short port)
|
2007-10-30 20:44:25 +03:00
|
|
|
{
|
2010-03-18 16:20:23 +03:00
|
|
|
unsigned long val = kvm_register_read(vcpu, VCPU_REGS_RAX);
|
|
|
|
int ret = emulator_pio_out_emulated(size, port, &val, 1, vcpu);
|
|
|
|
/* do not return to emulator after return from userspace */
|
2010-03-18 16:20:24 +03:00
|
|
|
vcpu->arch.pio.count = 0;
|
2007-10-30 20:44:25 +03:00
|
|
|
return ret;
|
|
|
|
}
|
2010-03-18 16:20:23 +03:00
|
|
|
EXPORT_SYMBOL_GPL(kvm_fast_pio_out);
|
2007-10-30 20:44:25 +03:00
|
|
|
|
2009-02-04 19:52:04 +03:00
|
|
|
static void bounce_off(void *info)
|
|
|
|
{
|
|
|
|
/* nothing */
|
|
|
|
}
|
|
|
|
|
|
|
|
static int kvmclock_cpufreq_notifier(struct notifier_block *nb, unsigned long val,
|
|
|
|
void *data)
|
|
|
|
{
|
|
|
|
struct cpufreq_freqs *freq = data;
|
|
|
|
struct kvm *kvm;
|
|
|
|
struct kvm_vcpu *vcpu;
|
|
|
|
int i, send_ipi = 0;
|
|
|
|
|
|
|
|
if (val == CPUFREQ_PRECHANGE && freq->old > freq->new)
|
|
|
|
return 0;
|
|
|
|
if (val == CPUFREQ_POSTCHANGE && freq->old < freq->new)
|
|
|
|
return 0;
|
KVM: Kill the confusing tsc_ref_khz and ref_freq variables
They are globals, not clearly protected by any ordering or locking, and
vulnerable to various startup races.
Instead, for variable TSC machines, register the cpufreq notifier and get
the TSC frequency directly from the cpufreq machinery. Not only is it
always right, it is also perfectly accurate, as no error prone measurement
is required.
On such machines, when a new CPU online is brought online, it isn't clear what
frequency it will start with, and it may not correspond to the reference, thus
in hardware_enable we clear the cpu_tsc_khz variable to zero and make sure
it is set before running on a VCPU.
Signed-off-by: Zachary Amsden <zamsden@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2009-09-30 01:38:35 +04:00
|
|
|
per_cpu(cpu_tsc_khz, freq->cpu) = freq->new;
|
2009-02-04 19:52:04 +03:00
|
|
|
|
|
|
|
spin_lock(&kvm_lock);
|
|
|
|
list_for_each_entry(kvm, &vm_list, vm_list) {
|
2009-06-09 16:56:29 +04:00
|
|
|
kvm_for_each_vcpu(i, vcpu, kvm) {
|
2009-02-04 19:52:04 +03:00
|
|
|
if (vcpu->cpu != freq->cpu)
|
|
|
|
continue;
|
|
|
|
if (!kvm_request_guest_time_update(vcpu))
|
|
|
|
continue;
|
|
|
|
if (vcpu->cpu != smp_processor_id())
|
|
|
|
send_ipi++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
spin_unlock(&kvm_lock);
|
|
|
|
|
|
|
|
if (freq->old < freq->new && send_ipi) {
|
|
|
|
/*
|
|
|
|
* We upscale the frequency. Must make the guest
|
|
|
|
* doesn't see old kvmclock values while running with
|
|
|
|
* the new frequency, otherwise we risk the guest sees
|
|
|
|
* time go backwards.
|
|
|
|
*
|
|
|
|
* In case we update the frequency for another cpu
|
|
|
|
* (which might be in guest context) send an interrupt
|
|
|
|
* to kick the cpu out of guest context. Next time
|
|
|
|
* guest context is entered kvmclock will be updated,
|
|
|
|
* so the guest will not see stale values.
|
|
|
|
*/
|
|
|
|
smp_call_function_single(freq->cpu, bounce_off, NULL, 1);
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct notifier_block kvmclock_cpufreq_notifier_block = {
|
|
|
|
.notifier_call = kvmclock_cpufreq_notifier
|
|
|
|
};
|
|
|
|
|
2009-09-30 01:38:34 +04:00
|
|
|
static void kvm_timer_init(void)
|
|
|
|
{
|
|
|
|
int cpu;
|
|
|
|
|
|
|
|
if (!boot_cpu_has(X86_FEATURE_CONSTANT_TSC)) {
|
|
|
|
cpufreq_register_notifier(&kvmclock_cpufreq_notifier_block,
|
|
|
|
CPUFREQ_TRANSITION_NOTIFIER);
|
2009-10-10 06:26:08 +04:00
|
|
|
for_each_online_cpu(cpu) {
|
|
|
|
unsigned long khz = cpufreq_get(cpu);
|
|
|
|
if (!khz)
|
|
|
|
khz = tsc_khz;
|
|
|
|
per_cpu(cpu_tsc_khz, cpu) = khz;
|
|
|
|
}
|
KVM: Kill the confusing tsc_ref_khz and ref_freq variables
They are globals, not clearly protected by any ordering or locking, and
vulnerable to various startup races.
Instead, for variable TSC machines, register the cpufreq notifier and get
the TSC frequency directly from the cpufreq machinery. Not only is it
always right, it is also perfectly accurate, as no error prone measurement
is required.
On such machines, when a new CPU online is brought online, it isn't clear what
frequency it will start with, and it may not correspond to the reference, thus
in hardware_enable we clear the cpu_tsc_khz variable to zero and make sure
it is set before running on a VCPU.
Signed-off-by: Zachary Amsden <zamsden@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2009-09-30 01:38:35 +04:00
|
|
|
} else {
|
|
|
|
for_each_possible_cpu(cpu)
|
|
|
|
per_cpu(cpu_tsc_khz, cpu) = tsc_khz;
|
2009-09-30 01:38:34 +04:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-04-19 09:32:45 +04:00
|
|
|
static DEFINE_PER_CPU(struct kvm_vcpu *, current_vcpu);
|
|
|
|
|
|
|
|
static int kvm_is_in_guest(void)
|
|
|
|
{
|
|
|
|
return percpu_read(current_vcpu) != NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int kvm_is_user_mode(void)
|
|
|
|
{
|
|
|
|
int user_mode = 3;
|
2010-04-20 06:13:58 +04:00
|
|
|
|
2010-04-19 09:32:45 +04:00
|
|
|
if (percpu_read(current_vcpu))
|
|
|
|
user_mode = kvm_x86_ops->get_cpl(percpu_read(current_vcpu));
|
2010-04-20 06:13:58 +04:00
|
|
|
|
2010-04-19 09:32:45 +04:00
|
|
|
return user_mode != 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static unsigned long kvm_get_guest_ip(void)
|
|
|
|
{
|
|
|
|
unsigned long ip = 0;
|
2010-04-20 06:13:58 +04:00
|
|
|
|
2010-04-19 09:32:45 +04:00
|
|
|
if (percpu_read(current_vcpu))
|
|
|
|
ip = kvm_rip_read(percpu_read(current_vcpu));
|
2010-04-20 06:13:58 +04:00
|
|
|
|
2010-04-19 09:32:45 +04:00
|
|
|
return ip;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct perf_guest_info_callbacks kvm_guest_cbs = {
|
|
|
|
.is_in_guest = kvm_is_in_guest,
|
|
|
|
.is_user_mode = kvm_is_user_mode,
|
|
|
|
.get_guest_ip = kvm_get_guest_ip,
|
|
|
|
};
|
|
|
|
|
|
|
|
void kvm_before_handle_nmi(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
percpu_write(current_vcpu, vcpu);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(kvm_before_handle_nmi);
|
|
|
|
|
|
|
|
void kvm_after_handle_nmi(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
percpu_write(current_vcpu, NULL);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(kvm_after_handle_nmi);
|
|
|
|
|
2007-11-14 15:40:21 +03:00
|
|
|
int kvm_arch_init(void *opaque)
|
2007-10-10 19:16:19 +04:00
|
|
|
{
|
2009-09-30 01:38:34 +04:00
|
|
|
int r;
|
2007-11-14 15:40:21 +03:00
|
|
|
struct kvm_x86_ops *ops = (struct kvm_x86_ops *)opaque;
|
|
|
|
|
|
|
|
if (kvm_x86_ops) {
|
|
|
|
printk(KERN_ERR "kvm: already loaded the other module\n");
|
2007-11-18 15:43:21 +03:00
|
|
|
r = -EEXIST;
|
|
|
|
goto out;
|
2007-11-14 15:40:21 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
if (!ops->cpu_has_kvm_support()) {
|
|
|
|
printk(KERN_ERR "kvm: no hardware support\n");
|
2007-11-18 15:43:21 +03:00
|
|
|
r = -EOPNOTSUPP;
|
|
|
|
goto out;
|
2007-11-14 15:40:21 +03:00
|
|
|
}
|
|
|
|
if (ops->disabled_by_bios()) {
|
|
|
|
printk(KERN_ERR "kvm: disabled by bios\n");
|
2007-11-18 15:43:21 +03:00
|
|
|
r = -EOPNOTSUPP;
|
|
|
|
goto out;
|
2007-11-14 15:40:21 +03:00
|
|
|
}
|
|
|
|
|
2008-01-13 14:23:56 +03:00
|
|
|
r = kvm_mmu_module_init();
|
|
|
|
if (r)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
kvm_init_msr_list();
|
|
|
|
|
2007-11-14 15:40:21 +03:00
|
|
|
kvm_x86_ops = ops;
|
2007-11-18 15:43:21 +03:00
|
|
|
kvm_mmu_set_nonpresent_ptes(0ull, 0ull);
|
2008-04-25 17:13:50 +04:00
|
|
|
kvm_mmu_set_base_ptes(PT_PRESENT_MASK);
|
|
|
|
kvm_mmu_set_mask_ptes(PT_USER_MASK, PT_ACCESSED_MASK,
|
2009-04-27 16:35:42 +04:00
|
|
|
PT_DIRTY_MASK, PT64_NX_MASK, 0);
|
2009-02-04 19:52:04 +03:00
|
|
|
|
2009-09-30 01:38:34 +04:00
|
|
|
kvm_timer_init();
|
2009-02-04 19:52:04 +03:00
|
|
|
|
2010-04-19 09:32:45 +04:00
|
|
|
perf_register_guest_info_callbacks(&kvm_guest_cbs);
|
|
|
|
|
2010-06-10 07:27:12 +04:00
|
|
|
if (cpu_has_xsave)
|
|
|
|
host_xcr0 = xgetbv(XCR_XFEATURE_ENABLED_MASK);
|
|
|
|
|
2007-11-14 15:40:21 +03:00
|
|
|
return 0;
|
2007-11-18 15:43:21 +03:00
|
|
|
|
|
|
|
out:
|
|
|
|
return r;
|
2007-10-10 19:16:19 +04:00
|
|
|
}
|
2007-11-01 01:24:24 +03:00
|
|
|
|
2007-11-14 15:40:21 +03:00
|
|
|
void kvm_arch_exit(void)
|
|
|
|
{
|
2010-04-19 09:32:45 +04:00
|
|
|
perf_unregister_guest_info_callbacks(&kvm_guest_cbs);
|
|
|
|
|
2009-04-17 21:24:58 +04:00
|
|
|
if (!boot_cpu_has(X86_FEATURE_CONSTANT_TSC))
|
|
|
|
cpufreq_unregister_notifier(&kvmclock_cpufreq_notifier_block,
|
|
|
|
CPUFREQ_TRANSITION_NOTIFIER);
|
2007-11-14 15:40:21 +03:00
|
|
|
kvm_x86_ops = NULL;
|
2007-11-18 15:43:21 +03:00
|
|
|
kvm_mmu_module_exit();
|
|
|
|
}
|
2007-11-14 15:40:21 +03:00
|
|
|
|
2007-11-01 01:24:24 +03:00
|
|
|
int kvm_emulate_halt(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
++vcpu->stat.halt_exits;
|
|
|
|
if (irqchip_in_kernel(vcpu->kvm)) {
|
2008-04-13 18:54:35 +04:00
|
|
|
vcpu->arch.mp_state = KVM_MP_STATE_HALTED;
|
2007-11-01 01:24:24 +03:00
|
|
|
return 1;
|
|
|
|
} else {
|
|
|
|
vcpu->run->exit_reason = KVM_EXIT_HLT;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(kvm_emulate_halt);
|
|
|
|
|
2008-02-22 20:21:37 +03:00
|
|
|
static inline gpa_t hc_gpa(struct kvm_vcpu *vcpu, unsigned long a0,
|
|
|
|
unsigned long a1)
|
|
|
|
{
|
|
|
|
if (is_long_mode(vcpu))
|
|
|
|
return a0;
|
|
|
|
else
|
|
|
|
return a0 | ((gpa_t)a1 << 32);
|
|
|
|
}
|
|
|
|
|
2010-01-17 16:51:22 +03:00
|
|
|
int kvm_hv_hypercall(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
u64 param, ingpa, outgpa, ret;
|
|
|
|
uint16_t code, rep_idx, rep_cnt, res = HV_STATUS_SUCCESS, rep_done = 0;
|
|
|
|
bool fast, longmode;
|
|
|
|
int cs_db, cs_l;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* hypercall generates UD from non zero cpl and real mode
|
|
|
|
* per HYPER-V spec
|
|
|
|
*/
|
2010-01-21 16:31:48 +03:00
|
|
|
if (kvm_x86_ops->get_cpl(vcpu) != 0 || !is_protmode(vcpu)) {
|
2010-01-17 16:51:22 +03:00
|
|
|
kvm_queue_exception(vcpu, UD_VECTOR);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
kvm_x86_ops->get_cs_db_l_bits(vcpu, &cs_db, &cs_l);
|
|
|
|
longmode = is_long_mode(vcpu) && cs_l == 1;
|
|
|
|
|
|
|
|
if (!longmode) {
|
2010-01-19 16:06:38 +03:00
|
|
|
param = ((u64)kvm_register_read(vcpu, VCPU_REGS_RDX) << 32) |
|
|
|
|
(kvm_register_read(vcpu, VCPU_REGS_RAX) & 0xffffffff);
|
|
|
|
ingpa = ((u64)kvm_register_read(vcpu, VCPU_REGS_RBX) << 32) |
|
|
|
|
(kvm_register_read(vcpu, VCPU_REGS_RCX) & 0xffffffff);
|
|
|
|
outgpa = ((u64)kvm_register_read(vcpu, VCPU_REGS_RDI) << 32) |
|
|
|
|
(kvm_register_read(vcpu, VCPU_REGS_RSI) & 0xffffffff);
|
2010-01-17 16:51:22 +03:00
|
|
|
}
|
|
|
|
#ifdef CONFIG_X86_64
|
|
|
|
else {
|
|
|
|
param = kvm_register_read(vcpu, VCPU_REGS_RCX);
|
|
|
|
ingpa = kvm_register_read(vcpu, VCPU_REGS_RDX);
|
|
|
|
outgpa = kvm_register_read(vcpu, VCPU_REGS_R8);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
code = param & 0xffff;
|
|
|
|
fast = (param >> 16) & 0x1;
|
|
|
|
rep_cnt = (param >> 32) & 0xfff;
|
|
|
|
rep_idx = (param >> 48) & 0xfff;
|
|
|
|
|
|
|
|
trace_kvm_hv_hypercall(code, fast, rep_cnt, rep_idx, ingpa, outgpa);
|
|
|
|
|
2010-01-17 16:51:24 +03:00
|
|
|
switch (code) {
|
|
|
|
case HV_X64_HV_NOTIFY_LONG_SPIN_WAIT:
|
|
|
|
kvm_vcpu_on_spin(vcpu);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
res = HV_STATUS_INVALID_HYPERCALL_CODE;
|
|
|
|
break;
|
|
|
|
}
|
2010-01-17 16:51:22 +03:00
|
|
|
|
|
|
|
ret = res | (((u64)rep_done & 0xfff) << 32);
|
|
|
|
if (longmode) {
|
|
|
|
kvm_register_write(vcpu, VCPU_REGS_RAX, ret);
|
|
|
|
} else {
|
|
|
|
kvm_register_write(vcpu, VCPU_REGS_RDX, ret >> 32);
|
|
|
|
kvm_register_write(vcpu, VCPU_REGS_RAX, ret & 0xffffffff);
|
|
|
|
}
|
|
|
|
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
2007-11-01 01:24:24 +03:00
|
|
|
int kvm_emulate_hypercall(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
unsigned long nr, a0, a1, a2, a3, ret;
|
2008-02-22 20:21:37 +03:00
|
|
|
int r = 1;
|
2007-11-01 01:24:24 +03:00
|
|
|
|
2010-01-17 16:51:22 +03:00
|
|
|
if (kvm_hv_hypercall_enabled(vcpu->kvm))
|
|
|
|
return kvm_hv_hypercall(vcpu);
|
|
|
|
|
2008-06-27 21:58:02 +04:00
|
|
|
nr = kvm_register_read(vcpu, VCPU_REGS_RAX);
|
|
|
|
a0 = kvm_register_read(vcpu, VCPU_REGS_RBX);
|
|
|
|
a1 = kvm_register_read(vcpu, VCPU_REGS_RCX);
|
|
|
|
a2 = kvm_register_read(vcpu, VCPU_REGS_RDX);
|
|
|
|
a3 = kvm_register_read(vcpu, VCPU_REGS_RSI);
|
2007-11-01 01:24:24 +03:00
|
|
|
|
2009-06-17 16:22:14 +04:00
|
|
|
trace_kvm_hypercall(nr, a0, a1, a2, a3);
|
2008-04-10 23:31:10 +04:00
|
|
|
|
2007-11-01 01:24:24 +03:00
|
|
|
if (!is_long_mode(vcpu)) {
|
|
|
|
nr &= 0xFFFFFFFF;
|
|
|
|
a0 &= 0xFFFFFFFF;
|
|
|
|
a1 &= 0xFFFFFFFF;
|
|
|
|
a2 &= 0xFFFFFFFF;
|
|
|
|
a3 &= 0xFFFFFFFF;
|
|
|
|
}
|
|
|
|
|
2009-08-03 20:43:28 +04:00
|
|
|
if (kvm_x86_ops->get_cpl(vcpu) != 0) {
|
|
|
|
ret = -KVM_EPERM;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
2007-11-01 01:24:24 +03:00
|
|
|
switch (nr) {
|
2007-10-25 18:52:32 +04:00
|
|
|
case KVM_HC_VAPIC_POLL_IRQ:
|
|
|
|
ret = 0;
|
|
|
|
break;
|
2008-02-22 20:21:37 +03:00
|
|
|
case KVM_HC_MMU_OP:
|
|
|
|
r = kvm_pv_mmu_op(vcpu, a0, hc_gpa(vcpu, a1, a2), &ret);
|
|
|
|
break;
|
2007-11-01 01:24:24 +03:00
|
|
|
default:
|
|
|
|
ret = -KVM_ENOSYS;
|
|
|
|
break;
|
|
|
|
}
|
2009-08-03 20:43:28 +04:00
|
|
|
out:
|
2008-06-27 21:58:02 +04:00
|
|
|
kvm_register_write(vcpu, VCPU_REGS_RAX, ret);
|
2008-02-20 22:30:30 +03:00
|
|
|
++vcpu->stat.hypercalls;
|
2008-02-22 20:21:37 +03:00
|
|
|
return r;
|
2007-11-01 01:24:24 +03:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(kvm_emulate_hypercall);
|
|
|
|
|
|
|
|
int kvm_fix_hypercall(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
char instruction[3];
|
2008-06-27 21:58:02 +04:00
|
|
|
unsigned long rip = kvm_rip_read(vcpu);
|
2007-11-01 01:24:24 +03:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Blow out the MMU to ensure that no other VCPU has an active mapping
|
|
|
|
* to ensure that the updated hypercall appears atomically across all
|
|
|
|
* VCPUs.
|
|
|
|
*/
|
|
|
|
kvm_mmu_zap_all(vcpu->kvm);
|
|
|
|
|
|
|
|
kvm_x86_ops->patch_hypercall(vcpu, instruction);
|
|
|
|
|
2010-04-28 20:15:37 +04:00
|
|
|
return emulator_write_emulated(rip, instruction, 3, NULL, vcpu);
|
2007-11-01 01:24:24 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
void realmode_lgdt(struct kvm_vcpu *vcpu, u16 limit, unsigned long base)
|
|
|
|
{
|
2010-02-16 11:51:48 +03:00
|
|
|
struct desc_ptr dt = { limit, base };
|
2007-11-01 01:24:24 +03:00
|
|
|
|
|
|
|
kvm_x86_ops->set_gdt(vcpu, &dt);
|
|
|
|
}
|
|
|
|
|
|
|
|
void realmode_lidt(struct kvm_vcpu *vcpu, u16 limit, unsigned long base)
|
|
|
|
{
|
2010-02-16 11:51:48 +03:00
|
|
|
struct desc_ptr dt = { limit, base };
|
2007-11-01 01:24:24 +03:00
|
|
|
|
|
|
|
kvm_x86_ops->set_idt(vcpu, &dt);
|
|
|
|
}
|
|
|
|
|
2007-11-21 18:10:04 +03:00
|
|
|
static int move_to_next_stateful_cpuid_entry(struct kvm_vcpu *vcpu, int i)
|
|
|
|
{
|
2007-12-13 18:50:52 +03:00
|
|
|
struct kvm_cpuid_entry2 *e = &vcpu->arch.cpuid_entries[i];
|
|
|
|
int j, nent = vcpu->arch.cpuid_nent;
|
2007-11-21 18:10:04 +03:00
|
|
|
|
|
|
|
e->flags &= ~KVM_CPUID_FLAG_STATE_READ_NEXT;
|
|
|
|
/* when no next entry is found, the current entry[i] is reselected */
|
2008-11-06 02:56:21 +03:00
|
|
|
for (j = i + 1; ; j = (j + 1) % nent) {
|
2007-12-13 18:50:52 +03:00
|
|
|
struct kvm_cpuid_entry2 *ej = &vcpu->arch.cpuid_entries[j];
|
2007-11-21 18:10:04 +03:00
|
|
|
if (ej->function == e->function) {
|
|
|
|
ej->flags |= KVM_CPUID_FLAG_STATE_READ_NEXT;
|
|
|
|
return j;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return 0; /* silence gcc, even though control never reaches here */
|
|
|
|
}
|
|
|
|
|
|
|
|
/* find an entry with matching function, matching index (if needed), and that
|
|
|
|
* should be read next (if it's stateful) */
|
|
|
|
static int is_matching_cpuid_entry(struct kvm_cpuid_entry2 *e,
|
|
|
|
u32 function, u32 index)
|
|
|
|
{
|
|
|
|
if (e->function != function)
|
|
|
|
return 0;
|
|
|
|
if ((e->flags & KVM_CPUID_FLAG_SIGNIFCANT_INDEX) && e->index != index)
|
|
|
|
return 0;
|
|
|
|
if ((e->flags & KVM_CPUID_FLAG_STATEFUL_FUNC) &&
|
2009-01-14 19:56:00 +03:00
|
|
|
!(e->flags & KVM_CPUID_FLAG_STATE_READ_NEXT))
|
2007-11-21 18:10:04 +03:00
|
|
|
return 0;
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
2008-11-25 22:17:11 +03:00
|
|
|
struct kvm_cpuid_entry2 *kvm_find_cpuid_entry(struct kvm_vcpu *vcpu,
|
|
|
|
u32 function, u32 index)
|
2007-11-01 01:24:24 +03:00
|
|
|
{
|
|
|
|
int i;
|
2008-11-25 22:17:11 +03:00
|
|
|
struct kvm_cpuid_entry2 *best = NULL;
|
2007-11-01 01:24:24 +03:00
|
|
|
|
2007-12-13 18:50:52 +03:00
|
|
|
for (i = 0; i < vcpu->arch.cpuid_nent; ++i) {
|
2008-11-25 22:17:11 +03:00
|
|
|
struct kvm_cpuid_entry2 *e;
|
|
|
|
|
2007-12-13 18:50:52 +03:00
|
|
|
e = &vcpu->arch.cpuid_entries[i];
|
2007-11-21 18:10:04 +03:00
|
|
|
if (is_matching_cpuid_entry(e, function, index)) {
|
|
|
|
if (e->flags & KVM_CPUID_FLAG_STATEFUL_FUNC)
|
|
|
|
move_to_next_stateful_cpuid_entry(vcpu, i);
|
2007-11-01 01:24:24 +03:00
|
|
|
best = e;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
/*
|
|
|
|
* Both basic or both extended?
|
|
|
|
*/
|
|
|
|
if (((e->function ^ function) & 0x80000000) == 0)
|
|
|
|
if (!best || e->function > best->function)
|
|
|
|
best = e;
|
|
|
|
}
|
2008-11-25 22:17:11 +03:00
|
|
|
return best;
|
|
|
|
}
|
2009-12-18 11:48:46 +03:00
|
|
|
EXPORT_SYMBOL_GPL(kvm_find_cpuid_entry);
|
2008-11-25 22:17:11 +03:00
|
|
|
|
2009-03-30 12:21:08 +04:00
|
|
|
int cpuid_maxphyaddr(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
struct kvm_cpuid_entry2 *best;
|
|
|
|
|
2010-04-11 16:33:32 +04:00
|
|
|
best = kvm_find_cpuid_entry(vcpu, 0x80000000, 0);
|
|
|
|
if (!best || best->eax < 0x80000008)
|
|
|
|
goto not_found;
|
2009-03-30 12:21:08 +04:00
|
|
|
best = kvm_find_cpuid_entry(vcpu, 0x80000008, 0);
|
|
|
|
if (best)
|
|
|
|
return best->eax & 0xff;
|
2010-04-11 16:33:32 +04:00
|
|
|
not_found:
|
2009-03-30 12:21:08 +04:00
|
|
|
return 36;
|
|
|
|
}
|
|
|
|
|
2008-11-25 22:17:11 +03:00
|
|
|
void kvm_emulate_cpuid(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
u32 function, index;
|
|
|
|
struct kvm_cpuid_entry2 *best;
|
|
|
|
|
|
|
|
function = kvm_register_read(vcpu, VCPU_REGS_RAX);
|
|
|
|
index = kvm_register_read(vcpu, VCPU_REGS_RCX);
|
|
|
|
kvm_register_write(vcpu, VCPU_REGS_RAX, 0);
|
|
|
|
kvm_register_write(vcpu, VCPU_REGS_RBX, 0);
|
|
|
|
kvm_register_write(vcpu, VCPU_REGS_RCX, 0);
|
|
|
|
kvm_register_write(vcpu, VCPU_REGS_RDX, 0);
|
|
|
|
best = kvm_find_cpuid_entry(vcpu, function, index);
|
2007-11-01 01:24:24 +03:00
|
|
|
if (best) {
|
2008-06-27 21:58:02 +04:00
|
|
|
kvm_register_write(vcpu, VCPU_REGS_RAX, best->eax);
|
|
|
|
kvm_register_write(vcpu, VCPU_REGS_RBX, best->ebx);
|
|
|
|
kvm_register_write(vcpu, VCPU_REGS_RCX, best->ecx);
|
|
|
|
kvm_register_write(vcpu, VCPU_REGS_RDX, best->edx);
|
2007-11-01 01:24:24 +03:00
|
|
|
}
|
|
|
|
kvm_x86_ops->skip_emulated_instruction(vcpu);
|
2009-06-17 16:22:14 +04:00
|
|
|
trace_kvm_cpuid(function,
|
|
|
|
kvm_register_read(vcpu, VCPU_REGS_RAX),
|
|
|
|
kvm_register_read(vcpu, VCPU_REGS_RBX),
|
|
|
|
kvm_register_read(vcpu, VCPU_REGS_RCX),
|
|
|
|
kvm_register_read(vcpu, VCPU_REGS_RDX));
|
2007-11-01 01:24:24 +03:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(kvm_emulate_cpuid);
|
2007-11-01 01:24:25 +03:00
|
|
|
|
2007-11-01 22:16:10 +03:00
|
|
|
/*
|
|
|
|
* Check if userspace requested an interrupt window, and that the
|
|
|
|
* interrupt window is open.
|
|
|
|
*
|
|
|
|
* No need to exit to userspace if we already have an interrupt queued.
|
|
|
|
*/
|
2009-08-24 12:10:17 +04:00
|
|
|
static int dm_request_for_irq_injection(struct kvm_vcpu *vcpu)
|
2007-11-01 22:16:10 +03:00
|
|
|
{
|
2009-04-21 18:44:56 +04:00
|
|
|
return (!irqchip_in_kernel(vcpu->kvm) && !kvm_cpu_has_interrupt(vcpu) &&
|
2009-08-24 12:10:17 +04:00
|
|
|
vcpu->run->request_interrupt_window &&
|
2009-04-21 18:44:59 +04:00
|
|
|
kvm_arch_interrupt_allowed(vcpu));
|
2007-11-01 22:16:10 +03:00
|
|
|
}
|
|
|
|
|
2009-08-24 12:10:17 +04:00
|
|
|
static void post_kvm_run_save(struct kvm_vcpu *vcpu)
|
2007-11-01 22:16:10 +03:00
|
|
|
{
|
2009-08-24 12:10:17 +04:00
|
|
|
struct kvm_run *kvm_run = vcpu->run;
|
|
|
|
|
2009-10-05 15:07:21 +04:00
|
|
|
kvm_run->if_flag = (kvm_get_rflags(vcpu) & X86_EFLAGS_IF) != 0;
|
2008-02-24 12:20:43 +03:00
|
|
|
kvm_run->cr8 = kvm_get_cr8(vcpu);
|
2007-11-01 22:16:10 +03:00
|
|
|
kvm_run->apic_base = kvm_get_apic_base(vcpu);
|
2008-12-11 18:54:54 +03:00
|
|
|
if (irqchip_in_kernel(vcpu->kvm))
|
2007-11-01 22:16:10 +03:00
|
|
|
kvm_run->ready_for_interrupt_injection = 1;
|
2008-12-11 18:54:54 +03:00
|
|
|
else
|
2007-11-01 22:16:10 +03:00
|
|
|
kvm_run->ready_for_interrupt_injection =
|
2009-05-11 14:35:47 +04:00
|
|
|
kvm_arch_interrupt_allowed(vcpu) &&
|
|
|
|
!kvm_cpu_has_interrupt(vcpu) &&
|
|
|
|
!kvm_event_needs_reinjection(vcpu);
|
2007-11-01 22:16:10 +03:00
|
|
|
}
|
|
|
|
|
2007-10-25 18:52:32 +04:00
|
|
|
static void vapic_enter(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
struct kvm_lapic *apic = vcpu->arch.apic;
|
|
|
|
struct page *page;
|
|
|
|
|
|
|
|
if (!apic || !apic->vapic_addr)
|
|
|
|
return;
|
|
|
|
|
|
|
|
page = gfn_to_page(vcpu->kvm, apic->vapic_addr >> PAGE_SHIFT);
|
2008-02-10 19:04:15 +03:00
|
|
|
|
|
|
|
vcpu->arch.apic->vapic_page = page;
|
2007-10-25 18:52:32 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
static void vapic_exit(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
struct kvm_lapic *apic = vcpu->arch.apic;
|
2009-12-23 19:35:25 +03:00
|
|
|
int idx;
|
2007-10-25 18:52:32 +04:00
|
|
|
|
|
|
|
if (!apic || !apic->vapic_addr)
|
|
|
|
return;
|
|
|
|
|
2009-12-23 19:35:25 +03:00
|
|
|
idx = srcu_read_lock(&vcpu->kvm->srcu);
|
2007-10-25 18:52:32 +04:00
|
|
|
kvm_release_page_dirty(apic->vapic_page);
|
|
|
|
mark_page_dirty(vcpu->kvm, apic->vapic_addr >> PAGE_SHIFT);
|
2009-12-23 19:35:25 +03:00
|
|
|
srcu_read_unlock(&vcpu->kvm->srcu, idx);
|
2007-10-25 18:52:32 +04:00
|
|
|
}
|
|
|
|
|
2009-04-21 18:45:08 +04:00
|
|
|
static void update_cr8_intercept(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
int max_irr, tpr;
|
|
|
|
|
|
|
|
if (!kvm_x86_ops->update_cr8_intercept)
|
|
|
|
return;
|
|
|
|
|
2009-08-17 23:49:40 +04:00
|
|
|
if (!vcpu->arch.apic)
|
|
|
|
return;
|
|
|
|
|
2009-05-11 14:35:54 +04:00
|
|
|
if (!vcpu->arch.apic->vapic_addr)
|
|
|
|
max_irr = kvm_lapic_find_highest_irr(vcpu);
|
|
|
|
else
|
|
|
|
max_irr = -1;
|
2009-04-21 18:45:08 +04:00
|
|
|
|
|
|
|
if (max_irr != -1)
|
|
|
|
max_irr >>= 4;
|
|
|
|
|
|
|
|
tpr = kvm_lapic_get_cr8(vcpu);
|
|
|
|
|
|
|
|
kvm_x86_ops->update_cr8_intercept(vcpu, tpr, max_irr);
|
|
|
|
}
|
|
|
|
|
2009-08-24 12:10:17 +04:00
|
|
|
static void inject_pending_event(struct kvm_vcpu *vcpu)
|
2009-04-21 18:45:08 +04:00
|
|
|
{
|
|
|
|
/* try to reinject previous events if any */
|
2009-07-09 16:33:51 +04:00
|
|
|
if (vcpu->arch.exception.pending) {
|
2010-03-11 14:01:59 +03:00
|
|
|
trace_kvm_inj_exception(vcpu->arch.exception.nr,
|
|
|
|
vcpu->arch.exception.has_error_code,
|
|
|
|
vcpu->arch.exception.error_code);
|
2009-07-09 16:33:51 +04:00
|
|
|
kvm_x86_ops->queue_exception(vcpu, vcpu->arch.exception.nr,
|
|
|
|
vcpu->arch.exception.has_error_code,
|
2010-04-22 14:33:13 +04:00
|
|
|
vcpu->arch.exception.error_code,
|
|
|
|
vcpu->arch.exception.reinject);
|
2009-07-09 16:33:51 +04:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2009-04-21 18:45:08 +04:00
|
|
|
if (vcpu->arch.nmi_injected) {
|
|
|
|
kvm_x86_ops->set_nmi(vcpu);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (vcpu->arch.interrupt.pending) {
|
2009-05-11 14:35:50 +04:00
|
|
|
kvm_x86_ops->set_irq(vcpu);
|
2009-04-21 18:45:08 +04:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* try to inject new event if pending */
|
|
|
|
if (vcpu->arch.nmi_pending) {
|
|
|
|
if (kvm_x86_ops->nmi_allowed(vcpu)) {
|
|
|
|
vcpu->arch.nmi_pending = false;
|
|
|
|
vcpu->arch.nmi_injected = true;
|
|
|
|
kvm_x86_ops->set_nmi(vcpu);
|
|
|
|
}
|
|
|
|
} else if (kvm_cpu_has_interrupt(vcpu)) {
|
|
|
|
if (kvm_x86_ops->interrupt_allowed(vcpu)) {
|
2009-05-11 14:35:50 +04:00
|
|
|
kvm_queue_interrupt(vcpu, kvm_cpu_get_interrupt(vcpu),
|
|
|
|
false);
|
|
|
|
kvm_x86_ops->set_irq(vcpu);
|
2009-04-21 18:45:08 +04:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-06-10 07:27:12 +04:00
|
|
|
static void kvm_load_guest_xcr0(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
if (kvm_read_cr4_bits(vcpu, X86_CR4_OSXSAVE) &&
|
|
|
|
!vcpu->guest_xcr0_loaded) {
|
|
|
|
/* kvm_set_xcr() also depends on this */
|
|
|
|
xsetbv(XCR_XFEATURE_ENABLED_MASK, vcpu->arch.xcr0);
|
|
|
|
vcpu->guest_xcr0_loaded = 1;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void kvm_put_guest_xcr0(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
if (vcpu->guest_xcr0_loaded) {
|
|
|
|
if (vcpu->arch.xcr0 != host_xcr0)
|
|
|
|
xsetbv(XCR_XFEATURE_ENABLED_MASK, host_xcr0);
|
|
|
|
vcpu->guest_xcr0_loaded = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-08-24 12:10:17 +04:00
|
|
|
static int vcpu_enter_guest(struct kvm_vcpu *vcpu)
|
2007-11-01 22:16:10 +03:00
|
|
|
{
|
|
|
|
int r;
|
2009-05-11 14:35:51 +04:00
|
|
|
bool req_int_win = !irqchip_in_kernel(vcpu->kvm) &&
|
2009-08-24 12:10:17 +04:00
|
|
|
vcpu->run->request_interrupt_window;
|
2007-11-01 22:16:10 +03:00
|
|
|
|
2008-02-20 22:47:24 +03:00
|
|
|
if (vcpu->requests)
|
2010-05-10 13:34:53 +04:00
|
|
|
if (kvm_check_request(KVM_REQ_MMU_RELOAD, vcpu))
|
2008-02-20 22:47:24 +03:00
|
|
|
kvm_mmu_unload(vcpu);
|
|
|
|
|
2007-11-01 22:16:10 +03:00
|
|
|
r = kvm_mmu_reload(vcpu);
|
|
|
|
if (unlikely(r))
|
|
|
|
goto out;
|
|
|
|
|
2008-01-16 13:49:30 +03:00
|
|
|
if (vcpu->requests) {
|
2010-05-10 13:34:53 +04:00
|
|
|
if (kvm_check_request(KVM_REQ_MIGRATE_TIMER, vcpu))
|
2008-05-27 19:10:20 +04:00
|
|
|
__kvm_migrate_timers(vcpu);
|
2010-05-10 13:34:53 +04:00
|
|
|
if (kvm_check_request(KVM_REQ_KVMCLOCK_UPDATE, vcpu))
|
2009-02-04 19:52:04 +03:00
|
|
|
kvm_write_guest_time(vcpu);
|
2010-05-10 13:34:53 +04:00
|
|
|
if (kvm_check_request(KVM_REQ_MMU_SYNC, vcpu))
|
2008-09-23 20:18:39 +04:00
|
|
|
kvm_mmu_sync_roots(vcpu);
|
2010-05-10 13:34:53 +04:00
|
|
|
if (kvm_check_request(KVM_REQ_TLB_FLUSH, vcpu))
|
2008-06-06 23:37:35 +04:00
|
|
|
kvm_x86_ops->tlb_flush(vcpu);
|
2010-05-10 13:34:53 +04:00
|
|
|
if (kvm_check_request(KVM_REQ_REPORT_TPR_ACCESS, vcpu)) {
|
2009-08-24 12:10:17 +04:00
|
|
|
vcpu->run->exit_reason = KVM_EXIT_TPR_ACCESS;
|
2007-10-25 18:52:32 +04:00
|
|
|
r = 0;
|
|
|
|
goto out;
|
|
|
|
}
|
2010-05-10 13:34:53 +04:00
|
|
|
if (kvm_check_request(KVM_REQ_TRIPLE_FAULT, vcpu)) {
|
2009-08-24 12:10:17 +04:00
|
|
|
vcpu->run->exit_reason = KVM_EXIT_SHUTDOWN;
|
2008-02-26 18:49:16 +03:00
|
|
|
r = 0;
|
|
|
|
goto out;
|
|
|
|
}
|
2010-05-10 13:34:53 +04:00
|
|
|
if (kvm_check_request(KVM_REQ_DEACTIVATE_FPU, vcpu)) {
|
2009-12-30 13:40:26 +03:00
|
|
|
vcpu->fpu_active = 0;
|
|
|
|
kvm_x86_ops->fpu_deactivate(vcpu);
|
|
|
|
}
|
2008-01-16 13:49:30 +03:00
|
|
|
}
|
2007-10-25 18:52:32 +04:00
|
|
|
|
2007-11-01 22:16:10 +03:00
|
|
|
preempt_disable();
|
|
|
|
|
|
|
|
kvm_x86_ops->prepare_guest_switch(vcpu);
|
2010-01-21 16:31:45 +03:00
|
|
|
if (vcpu->fpu_active)
|
|
|
|
kvm_load_guest_fpu(vcpu);
|
2010-06-10 07:27:12 +04:00
|
|
|
kvm_load_guest_xcr0(vcpu);
|
2007-11-01 22:16:10 +03:00
|
|
|
|
2010-05-03 17:54:48 +04:00
|
|
|
atomic_set(&vcpu->guest_mode, 1);
|
|
|
|
smp_wmb();
|
2007-11-01 22:16:10 +03:00
|
|
|
|
2010-05-03 17:54:48 +04:00
|
|
|
local_irq_disable();
|
2009-05-08 00:55:12 +04:00
|
|
|
|
2010-05-03 17:54:48 +04:00
|
|
|
if (!atomic_read(&vcpu->guest_mode) || vcpu->requests
|
|
|
|
|| need_resched() || signal_pending(current)) {
|
|
|
|
atomic_set(&vcpu->guest_mode, 0);
|
|
|
|
smp_wmb();
|
2008-01-15 19:27:32 +03:00
|
|
|
local_irq_enable();
|
|
|
|
preempt_enable();
|
|
|
|
r = 1;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
|
2009-08-24 12:10:17 +04:00
|
|
|
inject_pending_event(vcpu);
|
2007-11-01 22:16:10 +03:00
|
|
|
|
2009-05-11 14:35:51 +04:00
|
|
|
/* enable NMI/IRQ window open exits if needed */
|
|
|
|
if (vcpu->arch.nmi_pending)
|
|
|
|
kvm_x86_ops->enable_nmi_window(vcpu);
|
|
|
|
else if (kvm_cpu_has_interrupt(vcpu) || req_int_win)
|
|
|
|
kvm_x86_ops->enable_irq_window(vcpu);
|
|
|
|
|
2009-04-21 18:45:08 +04:00
|
|
|
if (kvm_lapic_enabled(vcpu)) {
|
2009-05-11 14:35:54 +04:00
|
|
|
update_cr8_intercept(vcpu);
|
|
|
|
kvm_lapic_sync_to_vapic(vcpu);
|
2009-04-21 18:45:08 +04:00
|
|
|
}
|
2007-10-25 18:52:32 +04:00
|
|
|
|
2009-12-23 19:35:25 +03:00
|
|
|
srcu_read_unlock(&vcpu->kvm->srcu, vcpu->srcu_idx);
|
2008-03-30 03:17:59 +04:00
|
|
|
|
2007-11-01 22:16:10 +03:00
|
|
|
kvm_guest_enter();
|
|
|
|
|
2008-12-15 15:52:10 +03:00
|
|
|
if (unlikely(vcpu->arch.switch_db_regs)) {
|
|
|
|
set_debugreg(0, 7);
|
|
|
|
set_debugreg(vcpu->arch.eff_db[0], 0);
|
|
|
|
set_debugreg(vcpu->arch.eff_db[1], 1);
|
|
|
|
set_debugreg(vcpu->arch.eff_db[2], 2);
|
|
|
|
set_debugreg(vcpu->arch.eff_db[3], 3);
|
|
|
|
}
|
2007-11-01 22:16:10 +03:00
|
|
|
|
2009-06-17 16:22:14 +04:00
|
|
|
trace_kvm_entry(vcpu->vcpu_id);
|
2009-08-24 12:10:17 +04:00
|
|
|
kvm_x86_ops->run(vcpu);
|
2007-11-01 22:16:10 +03:00
|
|
|
|
2009-09-09 21:22:48 +04:00
|
|
|
/*
|
|
|
|
* If the guest has used debug registers, at least dr7
|
|
|
|
* will be disabled while returning to the host.
|
|
|
|
* If we don't have active breakpoints in the host, we don't
|
|
|
|
* care about the messed up debug address registers. But if
|
|
|
|
* we have some of them active, restore the old state.
|
|
|
|
*/
|
2009-11-10 13:03:12 +03:00
|
|
|
if (hw_breakpoint_active())
|
2009-09-09 21:22:48 +04:00
|
|
|
hw_breakpoint_restore();
|
2008-12-15 15:52:10 +03:00
|
|
|
|
2010-05-03 17:54:48 +04:00
|
|
|
atomic_set(&vcpu->guest_mode, 0);
|
|
|
|
smp_wmb();
|
2007-11-01 22:16:10 +03:00
|
|
|
local_irq_enable();
|
|
|
|
|
|
|
|
++vcpu->stat.exits;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* We must have an instruction between local_irq_enable() and
|
|
|
|
* kvm_guest_exit(), so the timer interrupt isn't delayed by
|
|
|
|
* the interrupt shadow. The stat.exits increment will do nicely.
|
|
|
|
* But we need to prevent reordering, hence this barrier():
|
|
|
|
*/
|
|
|
|
barrier();
|
|
|
|
|
|
|
|
kvm_guest_exit();
|
|
|
|
|
|
|
|
preempt_enable();
|
|
|
|
|
2009-12-23 19:35:25 +03:00
|
|
|
vcpu->srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
|
2008-03-30 03:17:59 +04:00
|
|
|
|
2007-11-01 22:16:10 +03:00
|
|
|
/*
|
|
|
|
* Profile KVM exit RIPs:
|
|
|
|
*/
|
|
|
|
if (unlikely(prof_on == KVM_PROFILING)) {
|
2008-06-27 21:58:02 +04:00
|
|
|
unsigned long rip = kvm_rip_read(vcpu);
|
|
|
|
profile_hit(KVM_PROFILING, (void *)rip);
|
2007-11-01 22:16:10 +03:00
|
|
|
}
|
|
|
|
|
2007-11-25 14:41:11 +03:00
|
|
|
|
2007-10-25 18:52:32 +04:00
|
|
|
kvm_lapic_sync_from_vapic(vcpu);
|
|
|
|
|
2009-08-24 12:10:17 +04:00
|
|
|
r = kvm_x86_ops->handle_exit(vcpu);
|
2008-09-08 22:23:48 +04:00
|
|
|
out:
|
|
|
|
return r;
|
|
|
|
}
|
2007-11-01 22:16:10 +03:00
|
|
|
|
2009-03-23 16:11:44 +03:00
|
|
|
|
2009-08-24 12:10:17 +04:00
|
|
|
static int __vcpu_run(struct kvm_vcpu *vcpu)
|
2008-09-08 22:23:48 +04:00
|
|
|
{
|
|
|
|
int r;
|
2009-12-23 19:35:25 +03:00
|
|
|
struct kvm *kvm = vcpu->kvm;
|
2008-09-08 22:23:48 +04:00
|
|
|
|
|
|
|
if (unlikely(vcpu->arch.mp_state == KVM_MP_STATE_SIPI_RECEIVED)) {
|
2008-09-30 12:41:06 +04:00
|
|
|
pr_debug("vcpu %d received sipi with vector # %x\n",
|
|
|
|
vcpu->vcpu_id, vcpu->arch.sipi_vector);
|
2008-09-08 22:23:48 +04:00
|
|
|
kvm_lapic_reset(vcpu);
|
2008-10-07 17:42:33 +04:00
|
|
|
r = kvm_arch_vcpu_reset(vcpu);
|
2008-09-08 22:23:48 +04:00
|
|
|
if (r)
|
|
|
|
return r;
|
|
|
|
vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
|
2007-11-01 22:16:10 +03:00
|
|
|
}
|
|
|
|
|
2009-12-23 19:35:25 +03:00
|
|
|
vcpu->srcu_idx = srcu_read_lock(&kvm->srcu);
|
2008-09-08 22:23:48 +04:00
|
|
|
vapic_enter(vcpu);
|
|
|
|
|
|
|
|
r = 1;
|
|
|
|
while (r > 0) {
|
2008-09-22 15:28:53 +04:00
|
|
|
if (vcpu->arch.mp_state == KVM_MP_STATE_RUNNABLE)
|
2009-08-24 12:10:17 +04:00
|
|
|
r = vcpu_enter_guest(vcpu);
|
2008-09-08 22:23:48 +04:00
|
|
|
else {
|
2009-12-23 19:35:25 +03:00
|
|
|
srcu_read_unlock(&kvm->srcu, vcpu->srcu_idx);
|
2008-09-08 22:23:48 +04:00
|
|
|
kvm_vcpu_block(vcpu);
|
2009-12-23 19:35:25 +03:00
|
|
|
vcpu->srcu_idx = srcu_read_lock(&kvm->srcu);
|
2010-05-10 13:34:53 +04:00
|
|
|
if (kvm_check_request(KVM_REQ_UNHALT, vcpu))
|
2009-03-23 16:11:44 +03:00
|
|
|
{
|
|
|
|
switch(vcpu->arch.mp_state) {
|
|
|
|
case KVM_MP_STATE_HALTED:
|
2008-09-08 22:23:48 +04:00
|
|
|
vcpu->arch.mp_state =
|
2009-03-23 16:11:44 +03:00
|
|
|
KVM_MP_STATE_RUNNABLE;
|
|
|
|
case KVM_MP_STATE_RUNNABLE:
|
|
|
|
break;
|
|
|
|
case KVM_MP_STATE_SIPI_RECEIVED:
|
|
|
|
default:
|
|
|
|
r = -EINTR;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
2008-09-08 22:23:48 +04:00
|
|
|
}
|
|
|
|
|
2009-03-23 16:11:44 +03:00
|
|
|
if (r <= 0)
|
|
|
|
break;
|
|
|
|
|
|
|
|
clear_bit(KVM_REQ_PENDING_TIMER, &vcpu->requests);
|
|
|
|
if (kvm_cpu_has_pending_timer(vcpu))
|
|
|
|
kvm_inject_pending_timer_irqs(vcpu);
|
|
|
|
|
2009-08-24 12:10:17 +04:00
|
|
|
if (dm_request_for_irq_injection(vcpu)) {
|
2009-03-23 16:11:44 +03:00
|
|
|
r = -EINTR;
|
2009-08-24 12:10:17 +04:00
|
|
|
vcpu->run->exit_reason = KVM_EXIT_INTR;
|
2009-03-23 16:11:44 +03:00
|
|
|
++vcpu->stat.request_irq_exits;
|
|
|
|
}
|
|
|
|
if (signal_pending(current)) {
|
|
|
|
r = -EINTR;
|
2009-08-24 12:10:17 +04:00
|
|
|
vcpu->run->exit_reason = KVM_EXIT_INTR;
|
2009-03-23 16:11:44 +03:00
|
|
|
++vcpu->stat.signal_exits;
|
|
|
|
}
|
|
|
|
if (need_resched()) {
|
2009-12-23 19:35:25 +03:00
|
|
|
srcu_read_unlock(&kvm->srcu, vcpu->srcu_idx);
|
2009-03-23 16:11:44 +03:00
|
|
|
kvm_resched(vcpu);
|
2009-12-23 19:35:25 +03:00
|
|
|
vcpu->srcu_idx = srcu_read_lock(&kvm->srcu);
|
2008-09-08 22:23:48 +04:00
|
|
|
}
|
2007-11-01 22:16:10 +03:00
|
|
|
}
|
|
|
|
|
2009-12-23 19:35:25 +03:00
|
|
|
srcu_read_unlock(&kvm->srcu, vcpu->srcu_idx);
|
2007-11-01 22:16:10 +03:00
|
|
|
|
2007-10-25 18:52:32 +04:00
|
|
|
vapic_exit(vcpu);
|
|
|
|
|
2007-11-01 22:16:10 +03:00
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
|
|
|
|
{
|
|
|
|
int r;
|
|
|
|
sigset_t sigsaved;
|
|
|
|
|
2008-07-06 16:48:31 +04:00
|
|
|
if (vcpu->sigset_active)
|
|
|
|
sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
|
|
|
|
|
2008-04-13 18:54:35 +04:00
|
|
|
if (unlikely(vcpu->arch.mp_state == KVM_MP_STATE_UNINITIALIZED)) {
|
2007-11-01 22:16:10 +03:00
|
|
|
kvm_vcpu_block(vcpu);
|
2008-09-08 22:23:48 +04:00
|
|
|
clear_bit(KVM_REQ_UNHALT, &vcpu->requests);
|
2008-07-06 16:48:31 +04:00
|
|
|
r = -EAGAIN;
|
|
|
|
goto out;
|
2007-11-01 22:16:10 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
/* re-sync apic's tpr */
|
|
|
|
if (!irqchip_in_kernel(vcpu->kvm))
|
2008-02-24 12:20:43 +03:00
|
|
|
kvm_set_cr8(vcpu, kvm_run->cr8);
|
2007-11-01 22:16:10 +03:00
|
|
|
|
2010-03-18 16:20:28 +03:00
|
|
|
if (vcpu->arch.pio.count || vcpu->mmio_needed ||
|
|
|
|
vcpu->arch.emulate_ctxt.restart) {
|
|
|
|
if (vcpu->mmio_needed) {
|
|
|
|
memcpy(vcpu->mmio_data, kvm_run->mmio.data, 8);
|
|
|
|
vcpu->mmio_read_completed = 1;
|
|
|
|
vcpu->mmio_needed = 0;
|
2007-11-01 22:16:10 +03:00
|
|
|
}
|
2009-12-23 19:35:25 +03:00
|
|
|
vcpu->srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
|
2010-03-18 16:20:26 +03:00
|
|
|
r = emulate_instruction(vcpu, 0, 0, EMULTYPE_NO_DECODE);
|
2009-12-23 19:35:25 +03:00
|
|
|
srcu_read_unlock(&vcpu->kvm->srcu, vcpu->srcu_idx);
|
2010-05-10 12:16:56 +04:00
|
|
|
if (r != EMULATE_DONE) {
|
2007-11-01 22:16:10 +03:00
|
|
|
r = 0;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
}
|
2008-06-27 21:58:02 +04:00
|
|
|
if (kvm_run->exit_reason == KVM_EXIT_HYPERCALL)
|
|
|
|
kvm_register_write(vcpu, VCPU_REGS_RAX,
|
|
|
|
kvm_run->hypercall.ret);
|
2007-11-01 22:16:10 +03:00
|
|
|
|
2009-08-24 12:10:17 +04:00
|
|
|
r = __vcpu_run(vcpu);
|
2007-11-01 22:16:10 +03:00
|
|
|
|
|
|
|
out:
|
2010-05-04 06:04:27 +04:00
|
|
|
post_kvm_run_save(vcpu);
|
2007-11-01 22:16:10 +03:00
|
|
|
if (vcpu->sigset_active)
|
|
|
|
sigprocmask(SIG_SETMASK, &sigsaved, NULL);
|
|
|
|
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
|
|
|
|
{
|
2008-06-27 21:58:02 +04:00
|
|
|
regs->rax = kvm_register_read(vcpu, VCPU_REGS_RAX);
|
|
|
|
regs->rbx = kvm_register_read(vcpu, VCPU_REGS_RBX);
|
|
|
|
regs->rcx = kvm_register_read(vcpu, VCPU_REGS_RCX);
|
|
|
|
regs->rdx = kvm_register_read(vcpu, VCPU_REGS_RDX);
|
|
|
|
regs->rsi = kvm_register_read(vcpu, VCPU_REGS_RSI);
|
|
|
|
regs->rdi = kvm_register_read(vcpu, VCPU_REGS_RDI);
|
|
|
|
regs->rsp = kvm_register_read(vcpu, VCPU_REGS_RSP);
|
|
|
|
regs->rbp = kvm_register_read(vcpu, VCPU_REGS_RBP);
|
2007-11-01 22:16:10 +03:00
|
|
|
#ifdef CONFIG_X86_64
|
2008-06-27 21:58:02 +04:00
|
|
|
regs->r8 = kvm_register_read(vcpu, VCPU_REGS_R8);
|
|
|
|
regs->r9 = kvm_register_read(vcpu, VCPU_REGS_R9);
|
|
|
|
regs->r10 = kvm_register_read(vcpu, VCPU_REGS_R10);
|
|
|
|
regs->r11 = kvm_register_read(vcpu, VCPU_REGS_R11);
|
|
|
|
regs->r12 = kvm_register_read(vcpu, VCPU_REGS_R12);
|
|
|
|
regs->r13 = kvm_register_read(vcpu, VCPU_REGS_R13);
|
|
|
|
regs->r14 = kvm_register_read(vcpu, VCPU_REGS_R14);
|
|
|
|
regs->r15 = kvm_register_read(vcpu, VCPU_REGS_R15);
|
2007-11-01 22:16:10 +03:00
|
|
|
#endif
|
|
|
|
|
2008-06-27 21:58:02 +04:00
|
|
|
regs->rip = kvm_rip_read(vcpu);
|
2009-10-05 15:07:21 +04:00
|
|
|
regs->rflags = kvm_get_rflags(vcpu);
|
2007-11-01 22:16:10 +03:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
|
|
|
|
{
|
2008-06-27 21:58:02 +04:00
|
|
|
kvm_register_write(vcpu, VCPU_REGS_RAX, regs->rax);
|
|
|
|
kvm_register_write(vcpu, VCPU_REGS_RBX, regs->rbx);
|
|
|
|
kvm_register_write(vcpu, VCPU_REGS_RCX, regs->rcx);
|
|
|
|
kvm_register_write(vcpu, VCPU_REGS_RDX, regs->rdx);
|
|
|
|
kvm_register_write(vcpu, VCPU_REGS_RSI, regs->rsi);
|
|
|
|
kvm_register_write(vcpu, VCPU_REGS_RDI, regs->rdi);
|
|
|
|
kvm_register_write(vcpu, VCPU_REGS_RSP, regs->rsp);
|
|
|
|
kvm_register_write(vcpu, VCPU_REGS_RBP, regs->rbp);
|
2007-11-01 22:16:10 +03:00
|
|
|
#ifdef CONFIG_X86_64
|
2008-06-27 21:58:02 +04:00
|
|
|
kvm_register_write(vcpu, VCPU_REGS_R8, regs->r8);
|
|
|
|
kvm_register_write(vcpu, VCPU_REGS_R9, regs->r9);
|
|
|
|
kvm_register_write(vcpu, VCPU_REGS_R10, regs->r10);
|
|
|
|
kvm_register_write(vcpu, VCPU_REGS_R11, regs->r11);
|
|
|
|
kvm_register_write(vcpu, VCPU_REGS_R12, regs->r12);
|
|
|
|
kvm_register_write(vcpu, VCPU_REGS_R13, regs->r13);
|
|
|
|
kvm_register_write(vcpu, VCPU_REGS_R14, regs->r14);
|
|
|
|
kvm_register_write(vcpu, VCPU_REGS_R15, regs->r15);
|
2007-11-01 22:16:10 +03:00
|
|
|
#endif
|
|
|
|
|
2008-06-27 21:58:02 +04:00
|
|
|
kvm_rip_write(vcpu, regs->rip);
|
2009-10-05 15:07:21 +04:00
|
|
|
kvm_set_rflags(vcpu, regs->rflags);
|
2007-11-01 22:16:10 +03:00
|
|
|
|
2008-04-30 19:59:04 +04:00
|
|
|
vcpu->arch.exception.pending = false;
|
|
|
|
|
2007-11-01 22:16:10 +03:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l)
|
|
|
|
{
|
|
|
|
struct kvm_segment cs;
|
|
|
|
|
2008-05-27 12:18:46 +04:00
|
|
|
kvm_get_segment(vcpu, &cs, VCPU_SREG_CS);
|
2007-11-01 22:16:10 +03:00
|
|
|
*db = cs.db;
|
|
|
|
*l = cs.l;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(kvm_get_cs_db_l_bits);
|
|
|
|
|
|
|
|
int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
|
|
|
|
struct kvm_sregs *sregs)
|
|
|
|
{
|
2010-02-16 11:51:48 +03:00
|
|
|
struct desc_ptr dt;
|
2007-11-01 22:16:10 +03:00
|
|
|
|
2008-05-27 12:18:46 +04:00
|
|
|
kvm_get_segment(vcpu, &sregs->cs, VCPU_SREG_CS);
|
|
|
|
kvm_get_segment(vcpu, &sregs->ds, VCPU_SREG_DS);
|
|
|
|
kvm_get_segment(vcpu, &sregs->es, VCPU_SREG_ES);
|
|
|
|
kvm_get_segment(vcpu, &sregs->fs, VCPU_SREG_FS);
|
|
|
|
kvm_get_segment(vcpu, &sregs->gs, VCPU_SREG_GS);
|
|
|
|
kvm_get_segment(vcpu, &sregs->ss, VCPU_SREG_SS);
|
2007-11-01 22:16:10 +03:00
|
|
|
|
2008-05-27 12:18:46 +04:00
|
|
|
kvm_get_segment(vcpu, &sregs->tr, VCPU_SREG_TR);
|
|
|
|
kvm_get_segment(vcpu, &sregs->ldt, VCPU_SREG_LDTR);
|
2007-11-01 22:16:10 +03:00
|
|
|
|
|
|
|
kvm_x86_ops->get_idt(vcpu, &dt);
|
2010-02-16 11:51:48 +03:00
|
|
|
sregs->idt.limit = dt.size;
|
|
|
|
sregs->idt.base = dt.address;
|
2007-11-01 22:16:10 +03:00
|
|
|
kvm_x86_ops->get_gdt(vcpu, &dt);
|
2010-02-16 11:51:48 +03:00
|
|
|
sregs->gdt.limit = dt.size;
|
|
|
|
sregs->gdt.base = dt.address;
|
2007-11-01 22:16:10 +03:00
|
|
|
|
2009-12-29 19:07:30 +03:00
|
|
|
sregs->cr0 = kvm_read_cr0(vcpu);
|
2007-12-13 18:50:52 +03:00
|
|
|
sregs->cr2 = vcpu->arch.cr2;
|
|
|
|
sregs->cr3 = vcpu->arch.cr3;
|
2009-12-07 13:16:48 +03:00
|
|
|
sregs->cr4 = kvm_read_cr4(vcpu);
|
2008-02-24 12:20:43 +03:00
|
|
|
sregs->cr8 = kvm_get_cr8(vcpu);
|
2010-01-21 16:31:50 +03:00
|
|
|
sregs->efer = vcpu->arch.efer;
|
2007-11-01 22:16:10 +03:00
|
|
|
sregs->apic_base = kvm_get_apic_base(vcpu);
|
|
|
|
|
2009-05-11 14:35:48 +04:00
|
|
|
memset(sregs->interrupt_bitmap, 0, sizeof sregs->interrupt_bitmap);
|
2007-11-01 22:16:10 +03:00
|
|
|
|
2009-05-11 14:35:53 +04:00
|
|
|
if (vcpu->arch.interrupt.pending && !vcpu->arch.interrupt.soft)
|
2009-04-21 18:45:11 +04:00
|
|
|
set_bit(vcpu->arch.interrupt.nr,
|
|
|
|
(unsigned long *)sregs->interrupt_bitmap);
|
2009-04-21 18:45:10 +04:00
|
|
|
|
2007-11-01 22:16:10 +03:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2008-04-11 20:24:45 +04:00
|
|
|
int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
|
|
|
|
struct kvm_mp_state *mp_state)
|
|
|
|
{
|
|
|
|
mp_state->mp_state = vcpu->arch.mp_state;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
|
|
|
|
struct kvm_mp_state *mp_state)
|
|
|
|
{
|
|
|
|
vcpu->arch.mp_state = mp_state->mp_state;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2010-04-14 17:51:09 +04:00
|
|
|
int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason,
|
|
|
|
bool has_error_code, u32 error_code)
|
2007-11-01 22:16:10 +03:00
|
|
|
{
|
2010-04-28 20:15:42 +04:00
|
|
|
struct decode_cache *c = &vcpu->arch.emulate_ctxt.decode;
|
2010-03-18 16:20:19 +03:00
|
|
|
int cs_db, cs_l, ret;
|
|
|
|
cache_all_regs(vcpu);
|
2008-03-25 00:14:53 +03:00
|
|
|
|
2010-03-18 16:20:19 +03:00
|
|
|
kvm_x86_ops->get_cs_db_l_bits(vcpu, &cs_db, &cs_l);
|
2010-01-25 13:01:04 +03:00
|
|
|
|
2010-03-18 16:20:19 +03:00
|
|
|
vcpu->arch.emulate_ctxt.vcpu = vcpu;
|
|
|
|
vcpu->arch.emulate_ctxt.eflags = kvm_x86_ops->get_rflags(vcpu);
|
|
|
|
vcpu->arch.emulate_ctxt.eip = kvm_rip_read(vcpu);
|
|
|
|
vcpu->arch.emulate_ctxt.mode =
|
|
|
|
(!is_protmode(vcpu)) ? X86EMUL_MODE_REAL :
|
|
|
|
(vcpu->arch.emulate_ctxt.eflags & X86_EFLAGS_VM)
|
|
|
|
? X86EMUL_MODE_VM86 : cs_l
|
|
|
|
? X86EMUL_MODE_PROT64 : cs_db
|
|
|
|
? X86EMUL_MODE_PROT32 : X86EMUL_MODE_PROT16;
|
2010-04-28 20:15:42 +04:00
|
|
|
memset(c, 0, sizeof(struct decode_cache));
|
|
|
|
memcpy(c->regs, vcpu->arch.regs, sizeof c->regs);
|
2010-02-18 13:15:01 +03:00
|
|
|
|
2010-03-18 16:20:19 +03:00
|
|
|
ret = emulator_task_switch(&vcpu->arch.emulate_ctxt, &emulate_ops,
|
2010-04-14 17:51:09 +04:00
|
|
|
tss_selector, reason, has_error_code,
|
|
|
|
error_code);
|
2010-02-18 13:15:01 +03:00
|
|
|
|
|
|
|
if (ret)
|
2010-04-15 13:29:50 +04:00
|
|
|
return EMULATE_FAIL;
|
2008-03-25 00:14:53 +03:00
|
|
|
|
2010-04-28 20:15:42 +04:00
|
|
|
memcpy(vcpu->arch.regs, c->regs, sizeof c->regs);
|
2010-04-28 20:15:39 +04:00
|
|
|
kvm_rip_write(vcpu, vcpu->arch.emulate_ctxt.eip);
|
2010-04-15 13:29:50 +04:00
|
|
|
kvm_x86_ops->set_rflags(vcpu, vcpu->arch.emulate_ctxt.eflags);
|
|
|
|
return EMULATE_DONE;
|
2008-03-25 00:14:53 +03:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(kvm_task_switch);
|
|
|
|
|
2007-11-01 22:16:10 +03:00
|
|
|
int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
|
|
|
|
struct kvm_sregs *sregs)
|
|
|
|
{
|
|
|
|
int mmu_reset_needed = 0;
|
2009-05-11 14:35:48 +04:00
|
|
|
int pending_vec, max_bits;
|
2010-02-16 11:51:48 +03:00
|
|
|
struct desc_ptr dt;
|
2007-11-01 22:16:10 +03:00
|
|
|
|
2010-02-16 11:51:48 +03:00
|
|
|
dt.size = sregs->idt.limit;
|
|
|
|
dt.address = sregs->idt.base;
|
2007-11-01 22:16:10 +03:00
|
|
|
kvm_x86_ops->set_idt(vcpu, &dt);
|
2010-02-16 11:51:48 +03:00
|
|
|
dt.size = sregs->gdt.limit;
|
|
|
|
dt.address = sregs->gdt.base;
|
2007-11-01 22:16:10 +03:00
|
|
|
kvm_x86_ops->set_gdt(vcpu, &dt);
|
|
|
|
|
2007-12-13 18:50:52 +03:00
|
|
|
vcpu->arch.cr2 = sregs->cr2;
|
|
|
|
mmu_reset_needed |= vcpu->arch.cr3 != sregs->cr3;
|
2009-07-01 22:52:03 +04:00
|
|
|
vcpu->arch.cr3 = sregs->cr3;
|
2007-11-01 22:16:10 +03:00
|
|
|
|
2008-02-24 12:20:43 +03:00
|
|
|
kvm_set_cr8(vcpu, sregs->cr8);
|
2007-11-01 22:16:10 +03:00
|
|
|
|
2010-01-21 16:31:50 +03:00
|
|
|
mmu_reset_needed |= vcpu->arch.efer != sregs->efer;
|
2007-11-01 22:16:10 +03:00
|
|
|
kvm_x86_ops->set_efer(vcpu, sregs->efer);
|
|
|
|
kvm_set_apic_base(vcpu, sregs->apic_base);
|
|
|
|
|
2009-12-29 19:07:30 +03:00
|
|
|
mmu_reset_needed |= kvm_read_cr0(vcpu) != sregs->cr0;
|
2007-11-01 22:16:10 +03:00
|
|
|
kvm_x86_ops->set_cr0(vcpu, sregs->cr0);
|
2008-02-06 14:02:35 +03:00
|
|
|
vcpu->arch.cr0 = sregs->cr0;
|
2007-11-01 22:16:10 +03:00
|
|
|
|
2009-12-07 13:16:48 +03:00
|
|
|
mmu_reset_needed |= kvm_read_cr4(vcpu) != sregs->cr4;
|
2007-11-01 22:16:10 +03:00
|
|
|
kvm_x86_ops->set_cr4(vcpu, sregs->cr4);
|
2009-10-26 21:48:33 +03:00
|
|
|
if (!is_long_mode(vcpu) && is_pae(vcpu)) {
|
2007-12-13 18:50:52 +03:00
|
|
|
load_pdptrs(vcpu, vcpu->arch.cr3);
|
2009-10-26 21:48:33 +03:00
|
|
|
mmu_reset_needed = 1;
|
|
|
|
}
|
2007-11-01 22:16:10 +03:00
|
|
|
|
|
|
|
if (mmu_reset_needed)
|
|
|
|
kvm_mmu_reset_context(vcpu);
|
|
|
|
|
2009-05-11 14:35:48 +04:00
|
|
|
max_bits = (sizeof sregs->interrupt_bitmap) << 3;
|
|
|
|
pending_vec = find_first_bit(
|
|
|
|
(const unsigned long *)sregs->interrupt_bitmap, max_bits);
|
|
|
|
if (pending_vec < max_bits) {
|
2009-05-11 14:35:50 +04:00
|
|
|
kvm_queue_interrupt(vcpu, pending_vec, false);
|
2009-05-11 14:35:48 +04:00
|
|
|
pr_debug("Set back pending irq %d\n", pending_vec);
|
|
|
|
if (irqchip_in_kernel(vcpu->kvm))
|
|
|
|
kvm_pic_clear_isr_ack(vcpu->kvm);
|
2007-11-01 22:16:10 +03:00
|
|
|
}
|
|
|
|
|
2008-05-27 12:18:46 +04:00
|
|
|
kvm_set_segment(vcpu, &sregs->cs, VCPU_SREG_CS);
|
|
|
|
kvm_set_segment(vcpu, &sregs->ds, VCPU_SREG_DS);
|
|
|
|
kvm_set_segment(vcpu, &sregs->es, VCPU_SREG_ES);
|
|
|
|
kvm_set_segment(vcpu, &sregs->fs, VCPU_SREG_FS);
|
|
|
|
kvm_set_segment(vcpu, &sregs->gs, VCPU_SREG_GS);
|
|
|
|
kvm_set_segment(vcpu, &sregs->ss, VCPU_SREG_SS);
|
2007-11-01 22:16:10 +03:00
|
|
|
|
2008-05-27 12:18:46 +04:00
|
|
|
kvm_set_segment(vcpu, &sregs->tr, VCPU_SREG_TR);
|
|
|
|
kvm_set_segment(vcpu, &sregs->ldt, VCPU_SREG_LDTR);
|
2007-11-01 22:16:10 +03:00
|
|
|
|
2009-08-03 15:58:25 +04:00
|
|
|
update_cr8_intercept(vcpu);
|
|
|
|
|
2008-09-10 23:40:55 +04:00
|
|
|
/* Older userspace won't unhalt the vcpu on reset. */
|
2009-06-09 16:56:26 +04:00
|
|
|
if (kvm_vcpu_is_bsp(vcpu) && kvm_rip_read(vcpu) == 0xfff0 &&
|
2008-09-10 23:40:55 +04:00
|
|
|
sregs->cs.selector == 0xf000 && sregs->cs.base == 0xffff0000 &&
|
2010-01-21 16:31:48 +03:00
|
|
|
!is_protmode(vcpu))
|
2008-09-10 23:40:55 +04:00
|
|
|
vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
|
|
|
|
|
2007-11-01 22:16:10 +03:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2008-12-15 15:52:10 +03:00
|
|
|
int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
|
|
|
|
struct kvm_guest_debug *dbg)
|
2007-11-01 22:16:10 +03:00
|
|
|
{
|
2009-10-03 02:31:21 +04:00
|
|
|
unsigned long rflags;
|
2008-12-15 15:52:10 +03:00
|
|
|
int i, r;
|
2007-11-01 22:16:10 +03:00
|
|
|
|
2009-10-30 14:46:59 +03:00
|
|
|
if (dbg->control & (KVM_GUESTDBG_INJECT_DB | KVM_GUESTDBG_INJECT_BP)) {
|
|
|
|
r = -EBUSY;
|
|
|
|
if (vcpu->arch.exception.pending)
|
2010-05-13 12:25:04 +04:00
|
|
|
goto out;
|
2009-10-30 14:46:59 +03:00
|
|
|
if (dbg->control & KVM_GUESTDBG_INJECT_DB)
|
|
|
|
kvm_queue_exception(vcpu, DB_VECTOR);
|
|
|
|
else
|
|
|
|
kvm_queue_exception(vcpu, BP_VECTOR);
|
|
|
|
}
|
|
|
|
|
2009-10-05 15:07:21 +04:00
|
|
|
/*
|
|
|
|
* Read rflags as long as potentially injected trace flags are still
|
|
|
|
* filtered out.
|
|
|
|
*/
|
|
|
|
rflags = kvm_get_rflags(vcpu);
|
2009-10-03 02:31:21 +04:00
|
|
|
|
|
|
|
vcpu->guest_debug = dbg->control;
|
|
|
|
if (!(vcpu->guest_debug & KVM_GUESTDBG_ENABLE))
|
|
|
|
vcpu->guest_debug = 0;
|
|
|
|
|
|
|
|
if (vcpu->guest_debug & KVM_GUESTDBG_USE_HW_BP) {
|
2008-12-15 15:52:10 +03:00
|
|
|
for (i = 0; i < KVM_NR_DB_REGS; ++i)
|
|
|
|
vcpu->arch.eff_db[i] = dbg->arch.debugreg[i];
|
|
|
|
vcpu->arch.switch_db_regs =
|
|
|
|
(dbg->arch.debugreg[7] & DR7_BP_EN_MASK);
|
|
|
|
} else {
|
|
|
|
for (i = 0; i < KVM_NR_DB_REGS; i++)
|
|
|
|
vcpu->arch.eff_db[i] = vcpu->arch.db[i];
|
|
|
|
vcpu->arch.switch_db_regs = (vcpu->arch.dr7 & DR7_BP_EN_MASK);
|
|
|
|
}
|
|
|
|
|
2010-02-23 19:47:55 +03:00
|
|
|
if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
|
|
|
|
vcpu->arch.singlestep_rip = kvm_rip_read(vcpu) +
|
|
|
|
get_segment_base(vcpu, VCPU_SREG_CS);
|
2009-10-18 15:24:44 +04:00
|
|
|
|
2009-10-05 15:07:21 +04:00
|
|
|
/*
|
|
|
|
* Trigger an rflags update that will inject or remove the trace
|
|
|
|
* flags.
|
|
|
|
*/
|
|
|
|
kvm_set_rflags(vcpu, rflags);
|
2007-11-01 22:16:10 +03:00
|
|
|
|
2009-10-03 02:31:21 +04:00
|
|
|
kvm_x86_ops->set_guest_debug(vcpu, dbg);
|
2007-11-01 22:16:10 +03:00
|
|
|
|
2009-10-30 14:46:59 +03:00
|
|
|
r = 0;
|
2008-12-15 15:52:10 +03:00
|
|
|
|
2010-05-13 12:25:04 +04:00
|
|
|
out:
|
2007-11-01 22:16:10 +03:00
|
|
|
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2007-11-16 08:05:55 +03:00
|
|
|
/*
|
|
|
|
* Translate a guest virtual address to a guest physical address.
|
|
|
|
*/
|
|
|
|
int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
|
|
|
|
struct kvm_translation *tr)
|
|
|
|
{
|
|
|
|
unsigned long vaddr = tr->linear_address;
|
|
|
|
gpa_t gpa;
|
2009-12-23 19:35:25 +03:00
|
|
|
int idx;
|
2007-11-16 08:05:55 +03:00
|
|
|
|
2009-12-23 19:35:25 +03:00
|
|
|
idx = srcu_read_lock(&vcpu->kvm->srcu);
|
2010-02-10 15:21:32 +03:00
|
|
|
gpa = kvm_mmu_gva_to_gpa_system(vcpu, vaddr, NULL);
|
2009-12-23 19:35:25 +03:00
|
|
|
srcu_read_unlock(&vcpu->kvm->srcu, idx);
|
2007-11-16 08:05:55 +03:00
|
|
|
tr->physical_address = gpa;
|
|
|
|
tr->valid = gpa != UNMAPPED_GVA;
|
|
|
|
tr->writeable = 1;
|
|
|
|
tr->usermode = 0;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2007-11-01 01:24:25 +03:00
|
|
|
int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
|
|
|
|
{
|
2010-05-17 13:08:28 +04:00
|
|
|
struct i387_fxsave_struct *fxsave =
|
|
|
|
&vcpu->arch.guest_fpu.state->fxsave;
|
2007-11-01 01:24:25 +03:00
|
|
|
|
|
|
|
memcpy(fpu->fpr, fxsave->st_space, 128);
|
|
|
|
fpu->fcw = fxsave->cwd;
|
|
|
|
fpu->fsw = fxsave->swd;
|
|
|
|
fpu->ftwx = fxsave->twd;
|
|
|
|
fpu->last_opcode = fxsave->fop;
|
|
|
|
fpu->last_ip = fxsave->rip;
|
|
|
|
fpu->last_dp = fxsave->rdp;
|
|
|
|
memcpy(fpu->xmm, fxsave->xmm_space, sizeof fxsave->xmm_space);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
|
|
|
|
{
|
2010-05-17 13:08:28 +04:00
|
|
|
struct i387_fxsave_struct *fxsave =
|
|
|
|
&vcpu->arch.guest_fpu.state->fxsave;
|
2007-11-01 01:24:25 +03:00
|
|
|
|
|
|
|
memcpy(fxsave->st_space, fpu->fpr, 128);
|
|
|
|
fxsave->cwd = fpu->fcw;
|
|
|
|
fxsave->swd = fpu->fsw;
|
|
|
|
fxsave->twd = fpu->ftwx;
|
|
|
|
fxsave->fop = fpu->last_opcode;
|
|
|
|
fxsave->rip = fpu->last_ip;
|
|
|
|
fxsave->rdp = fpu->last_dp;
|
|
|
|
memcpy(fxsave->xmm_space, fpu->xmm, sizeof fxsave->xmm_space);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2010-05-25 18:01:50 +04:00
|
|
|
int fx_init(struct kvm_vcpu *vcpu)
|
2007-11-01 01:24:25 +03:00
|
|
|
{
|
2010-05-25 18:01:50 +04:00
|
|
|
int err;
|
|
|
|
|
|
|
|
err = fpu_alloc(&vcpu->arch.guest_fpu);
|
|
|
|
if (err)
|
|
|
|
return err;
|
|
|
|
|
2010-05-17 13:08:28 +04:00
|
|
|
fpu_finit(&vcpu->arch.guest_fpu);
|
2007-11-01 01:24:25 +03:00
|
|
|
|
2010-06-10 07:27:12 +04:00
|
|
|
/*
|
|
|
|
* Ensure guest xcr0 is valid for loading
|
|
|
|
*/
|
|
|
|
vcpu->arch.xcr0 = XSTATE_FP;
|
|
|
|
|
2007-12-13 18:50:52 +03:00
|
|
|
vcpu->arch.cr0 |= X86_CR0_ET;
|
2010-05-25 18:01:50 +04:00
|
|
|
|
|
|
|
return 0;
|
2007-11-01 01:24:25 +03:00
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(fx_init);
|
|
|
|
|
2010-05-17 13:08:28 +04:00
|
|
|
static void fx_free(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
fpu_free(&vcpu->arch.guest_fpu);
|
|
|
|
}
|
|
|
|
|
2007-11-01 01:24:25 +03:00
|
|
|
void kvm_load_guest_fpu(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
2010-01-21 16:31:45 +03:00
|
|
|
if (vcpu->guest_fpu_loaded)
|
2007-11-01 01:24:25 +03:00
|
|
|
return;
|
|
|
|
|
2010-06-10 07:27:12 +04:00
|
|
|
/*
|
|
|
|
* Restore all possible states in the guest,
|
|
|
|
* and assume host would use all available bits.
|
|
|
|
* Guest xcr0 would be loaded later.
|
|
|
|
*/
|
|
|
|
kvm_put_guest_xcr0(vcpu);
|
2007-11-01 01:24:25 +03:00
|
|
|
vcpu->guest_fpu_loaded = 1;
|
2010-05-17 13:08:27 +04:00
|
|
|
unlazy_fpu(current);
|
2010-05-17 13:08:28 +04:00
|
|
|
fpu_restore_checking(&vcpu->arch.guest_fpu);
|
2010-01-21 16:31:52 +03:00
|
|
|
trace_kvm_fpu(1);
|
2007-11-01 01:24:25 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
void kvm_put_guest_fpu(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
2010-06-10 07:27:12 +04:00
|
|
|
kvm_put_guest_xcr0(vcpu);
|
|
|
|
|
2007-11-01 01:24:25 +03:00
|
|
|
if (!vcpu->guest_fpu_loaded)
|
|
|
|
return;
|
|
|
|
|
|
|
|
vcpu->guest_fpu_loaded = 0;
|
2010-05-17 13:08:28 +04:00
|
|
|
fpu_save_init(&vcpu->arch.guest_fpu);
|
2007-11-18 14:54:33 +03:00
|
|
|
++vcpu->stat.fpu_reload;
|
2010-05-10 13:34:53 +04:00
|
|
|
kvm_make_request(KVM_REQ_DEACTIVATE_FPU, vcpu);
|
2010-01-21 16:31:52 +03:00
|
|
|
trace_kvm_fpu(0);
|
2007-11-01 01:24:25 +03:00
|
|
|
}
|
2007-11-14 15:38:21 +03:00
|
|
|
|
|
|
|
void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
2009-02-25 18:08:31 +03:00
|
|
|
if (vcpu->arch.time_page) {
|
|
|
|
kvm_release_page_dirty(vcpu->arch.time_page);
|
|
|
|
vcpu->arch.time_page = NULL;
|
|
|
|
}
|
|
|
|
|
2010-05-17 13:08:28 +04:00
|
|
|
fx_free(vcpu);
|
2007-11-14 15:38:21 +03:00
|
|
|
kvm_x86_ops->vcpu_free(vcpu);
|
|
|
|
}
|
|
|
|
|
|
|
|
struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm,
|
|
|
|
unsigned int id)
|
|
|
|
{
|
2007-11-20 16:30:24 +03:00
|
|
|
return kvm_x86_ops->vcpu_create(kvm, id);
|
|
|
|
}
|
2007-11-14 15:38:21 +03:00
|
|
|
|
2007-11-20 16:30:24 +03:00
|
|
|
int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
int r;
|
2007-11-14 15:38:21 +03:00
|
|
|
|
2008-10-09 12:01:54 +04:00
|
|
|
vcpu->arch.mtrr_state.have_fixed = 1;
|
2007-11-14 15:38:21 +03:00
|
|
|
vcpu_load(vcpu);
|
|
|
|
r = kvm_arch_vcpu_reset(vcpu);
|
|
|
|
if (r == 0)
|
|
|
|
r = kvm_mmu_setup(vcpu);
|
|
|
|
vcpu_put(vcpu);
|
|
|
|
if (r < 0)
|
|
|
|
goto free_vcpu;
|
|
|
|
|
2007-11-20 16:30:24 +03:00
|
|
|
return 0;
|
2007-11-14 15:38:21 +03:00
|
|
|
free_vcpu:
|
|
|
|
kvm_x86_ops->vcpu_free(vcpu);
|
2007-11-20 16:30:24 +03:00
|
|
|
return r;
|
2007-11-14 15:38:21 +03:00
|
|
|
}
|
|
|
|
|
2007-11-19 23:04:43 +03:00
|
|
|
void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
|
2007-11-14 15:38:21 +03:00
|
|
|
{
|
|
|
|
vcpu_load(vcpu);
|
|
|
|
kvm_mmu_unload(vcpu);
|
|
|
|
vcpu_put(vcpu);
|
|
|
|
|
2010-05-17 13:08:28 +04:00
|
|
|
fx_free(vcpu);
|
2007-11-14 15:38:21 +03:00
|
|
|
kvm_x86_ops->vcpu_free(vcpu);
|
|
|
|
}
|
|
|
|
|
|
|
|
int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
2008-09-26 11:30:48 +04:00
|
|
|
vcpu->arch.nmi_pending = false;
|
|
|
|
vcpu->arch.nmi_injected = false;
|
|
|
|
|
2008-12-15 15:52:10 +03:00
|
|
|
vcpu->arch.switch_db_regs = 0;
|
|
|
|
memset(vcpu->arch.db, 0, sizeof(vcpu->arch.db));
|
|
|
|
vcpu->arch.dr6 = DR6_FIXED_1;
|
|
|
|
vcpu->arch.dr7 = DR7_FIXED_1;
|
|
|
|
|
2007-11-14 15:38:21 +03:00
|
|
|
return kvm_x86_ops->vcpu_reset(vcpu);
|
|
|
|
}
|
|
|
|
|
2009-09-15 13:37:46 +04:00
|
|
|
int kvm_arch_hardware_enable(void *garbage)
|
2007-11-14 15:38:21 +03:00
|
|
|
{
|
KVM: Kill the confusing tsc_ref_khz and ref_freq variables
They are globals, not clearly protected by any ordering or locking, and
vulnerable to various startup races.
Instead, for variable TSC machines, register the cpufreq notifier and get
the TSC frequency directly from the cpufreq machinery. Not only is it
always right, it is also perfectly accurate, as no error prone measurement
is required.
On such machines, when a new CPU online is brought online, it isn't clear what
frequency it will start with, and it may not correspond to the reference, thus
in hardware_enable we clear the cpu_tsc_khz variable to zero and make sure
it is set before running on a VCPU.
Signed-off-by: Zachary Amsden <zamsden@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2009-09-30 01:38:35 +04:00
|
|
|
/*
|
|
|
|
* Since this may be called from a hotplug notifcation,
|
|
|
|
* we can't get the CPU frequency directly.
|
|
|
|
*/
|
|
|
|
if (!boot_cpu_has(X86_FEATURE_CONSTANT_TSC)) {
|
|
|
|
int cpu = raw_smp_processor_id();
|
|
|
|
per_cpu(cpu_tsc_khz, cpu) = 0;
|
|
|
|
}
|
2009-09-07 12:12:18 +04:00
|
|
|
|
|
|
|
kvm_shared_msr_cpu_online();
|
|
|
|
|
2009-09-15 13:37:46 +04:00
|
|
|
return kvm_x86_ops->hardware_enable(garbage);
|
2007-11-14 15:38:21 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
void kvm_arch_hardware_disable(void *garbage)
|
|
|
|
{
|
|
|
|
kvm_x86_ops->hardware_disable(garbage);
|
2009-11-28 15:18:47 +03:00
|
|
|
drop_user_return_notifiers(garbage);
|
2007-11-14 15:38:21 +03:00
|
|
|
}
|
|
|
|
|
|
|
|
int kvm_arch_hardware_setup(void)
|
|
|
|
{
|
|
|
|
return kvm_x86_ops->hardware_setup();
|
|
|
|
}
|
|
|
|
|
|
|
|
void kvm_arch_hardware_unsetup(void)
|
|
|
|
{
|
|
|
|
kvm_x86_ops->hardware_unsetup();
|
|
|
|
}
|
|
|
|
|
|
|
|
void kvm_arch_check_processor_compat(void *rtn)
|
|
|
|
{
|
|
|
|
kvm_x86_ops->check_processor_compatibility(rtn);
|
|
|
|
}
|
|
|
|
|
|
|
|
int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
struct page *page;
|
|
|
|
struct kvm *kvm;
|
|
|
|
int r;
|
|
|
|
|
|
|
|
BUG_ON(vcpu->kvm == NULL);
|
|
|
|
kvm = vcpu->kvm;
|
|
|
|
|
2007-12-13 18:50:52 +03:00
|
|
|
vcpu->arch.mmu.root_hpa = INVALID_PAGE;
|
2009-06-09 16:56:26 +04:00
|
|
|
if (!irqchip_in_kernel(kvm) || kvm_vcpu_is_bsp(vcpu))
|
2008-04-13 18:54:35 +04:00
|
|
|
vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
|
2007-11-14 15:38:21 +03:00
|
|
|
else
|
2008-04-13 18:54:35 +04:00
|
|
|
vcpu->arch.mp_state = KVM_MP_STATE_UNINITIALIZED;
|
2007-11-14 15:38:21 +03:00
|
|
|
|
|
|
|
page = alloc_page(GFP_KERNEL | __GFP_ZERO);
|
|
|
|
if (!page) {
|
|
|
|
r = -ENOMEM;
|
|
|
|
goto fail;
|
|
|
|
}
|
2007-12-13 18:50:52 +03:00
|
|
|
vcpu->arch.pio_data = page_address(page);
|
2007-11-14 15:38:21 +03:00
|
|
|
|
|
|
|
r = kvm_mmu_create(vcpu);
|
|
|
|
if (r < 0)
|
|
|
|
goto fail_free_pio_data;
|
|
|
|
|
|
|
|
if (irqchip_in_kernel(kvm)) {
|
|
|
|
r = kvm_create_lapic(vcpu);
|
|
|
|
if (r < 0)
|
|
|
|
goto fail_mmu_destroy;
|
|
|
|
}
|
|
|
|
|
2009-05-11 12:48:15 +04:00
|
|
|
vcpu->arch.mce_banks = kzalloc(KVM_MAX_MCE_BANKS * sizeof(u64) * 4,
|
|
|
|
GFP_KERNEL);
|
|
|
|
if (!vcpu->arch.mce_banks) {
|
|
|
|
r = -ENOMEM;
|
2010-01-22 09:21:29 +03:00
|
|
|
goto fail_free_lapic;
|
2009-05-11 12:48:15 +04:00
|
|
|
}
|
|
|
|
vcpu->arch.mcg_cap = KVM_MAX_MCE_BANKS;
|
|
|
|
|
2007-11-14 15:38:21 +03:00
|
|
|
return 0;
|
2010-01-22 09:21:29 +03:00
|
|
|
fail_free_lapic:
|
|
|
|
kvm_free_lapic(vcpu);
|
2007-11-14 15:38:21 +03:00
|
|
|
fail_mmu_destroy:
|
|
|
|
kvm_mmu_destroy(vcpu);
|
|
|
|
fail_free_pio_data:
|
2007-12-13 18:50:52 +03:00
|
|
|
free_page((unsigned long)vcpu->arch.pio_data);
|
2007-11-14 15:38:21 +03:00
|
|
|
fail:
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
2009-12-23 19:35:25 +03:00
|
|
|
int idx;
|
|
|
|
|
2010-01-22 09:18:47 +03:00
|
|
|
kfree(vcpu->arch.mce_banks);
|
2007-11-14 15:38:21 +03:00
|
|
|
kvm_free_lapic(vcpu);
|
2009-12-23 19:35:25 +03:00
|
|
|
idx = srcu_read_lock(&vcpu->kvm->srcu);
|
2007-11-14 15:38:21 +03:00
|
|
|
kvm_mmu_destroy(vcpu);
|
2009-12-23 19:35:25 +03:00
|
|
|
srcu_read_unlock(&vcpu->kvm->srcu, idx);
|
2007-12-13 18:50:52 +03:00
|
|
|
free_page((unsigned long)vcpu->arch.pio_data);
|
2007-11-14 15:38:21 +03:00
|
|
|
}
|
2007-11-18 13:43:45 +03:00
|
|
|
|
|
|
|
struct kvm *kvm_arch_create_vm(void)
|
|
|
|
{
|
|
|
|
struct kvm *kvm = kzalloc(sizeof(struct kvm), GFP_KERNEL);
|
|
|
|
|
|
|
|
if (!kvm)
|
|
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
|
2007-12-14 05:01:48 +03:00
|
|
|
INIT_LIST_HEAD(&kvm->arch.active_mmu_pages);
|
2008-07-28 20:26:26 +04:00
|
|
|
INIT_LIST_HEAD(&kvm->arch.assigned_dev_head);
|
2007-11-18 13:43:45 +03:00
|
|
|
|
2008-10-15 16:15:06 +04:00
|
|
|
/* Reserve bit 0 of irq_sources_bitmap for userspace irq source */
|
|
|
|
set_bit(KVM_USERSPACE_IRQ_SOURCE_ID, &kvm->arch.irq_sources_bitmap);
|
|
|
|
|
2008-12-11 22:45:05 +03:00
|
|
|
rdtscll(kvm->arch.vm_init_tsc);
|
|
|
|
|
2007-11-18 13:43:45 +03:00
|
|
|
return kvm;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void kvm_unload_vcpu_mmu(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
vcpu_load(vcpu);
|
|
|
|
kvm_mmu_unload(vcpu);
|
|
|
|
vcpu_put(vcpu);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void kvm_free_vcpus(struct kvm *kvm)
|
|
|
|
{
|
|
|
|
unsigned int i;
|
2009-06-09 16:56:29 +04:00
|
|
|
struct kvm_vcpu *vcpu;
|
2007-11-18 13:43:45 +03:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Unpin any mmu pages first.
|
|
|
|
*/
|
2009-06-09 16:56:29 +04:00
|
|
|
kvm_for_each_vcpu(i, vcpu, kvm)
|
|
|
|
kvm_unload_vcpu_mmu(vcpu);
|
|
|
|
kvm_for_each_vcpu(i, vcpu, kvm)
|
|
|
|
kvm_arch_vcpu_free(vcpu);
|
|
|
|
|
|
|
|
mutex_lock(&kvm->lock);
|
|
|
|
for (i = 0; i < atomic_read(&kvm->online_vcpus); i++)
|
|
|
|
kvm->vcpus[i] = NULL;
|
2007-11-18 13:43:45 +03:00
|
|
|
|
2009-06-09 16:56:29 +04:00
|
|
|
atomic_set(&kvm->online_vcpus, 0);
|
|
|
|
mutex_unlock(&kvm->lock);
|
2007-11-18 13:43:45 +03:00
|
|
|
}
|
|
|
|
|
2009-01-06 05:03:02 +03:00
|
|
|
void kvm_arch_sync_events(struct kvm *kvm)
|
|
|
|
{
|
2009-01-06 05:03:03 +03:00
|
|
|
kvm_free_all_assigned_devices(kvm);
|
2009-01-06 05:03:02 +03:00
|
|
|
}
|
|
|
|
|
2007-11-18 13:43:45 +03:00
|
|
|
void kvm_arch_destroy_vm(struct kvm *kvm)
|
|
|
|
{
|
2008-10-31 07:37:41 +03:00
|
|
|
kvm_iommu_unmap_guest(kvm);
|
2008-01-28 00:10:22 +03:00
|
|
|
kvm_free_pit(kvm);
|
2007-12-14 05:17:34 +03:00
|
|
|
kfree(kvm->arch.vpic);
|
|
|
|
kfree(kvm->arch.vioapic);
|
2007-11-18 13:43:45 +03:00
|
|
|
kvm_free_vcpus(kvm);
|
|
|
|
kvm_free_physmem(kvm);
|
2008-03-25 12:26:13 +03:00
|
|
|
if (kvm->arch.apic_access_page)
|
|
|
|
put_page(kvm->arch.apic_access_page);
|
2008-04-25 17:44:52 +04:00
|
|
|
if (kvm->arch.ept_identity_pagetable)
|
|
|
|
put_page(kvm->arch.ept_identity_pagetable);
|
2010-01-19 17:45:23 +03:00
|
|
|
cleanup_srcu_struct(&kvm->srcu);
|
2007-11-18 13:43:45 +03:00
|
|
|
kfree(kvm);
|
|
|
|
}
|
2007-11-20 11:25:04 +03:00
|
|
|
|
2009-12-23 19:35:18 +03:00
|
|
|
int kvm_arch_prepare_memory_region(struct kvm *kvm,
|
|
|
|
struct kvm_memory_slot *memslot,
|
2007-11-20 11:25:04 +03:00
|
|
|
struct kvm_memory_slot old,
|
2009-12-23 19:35:18 +03:00
|
|
|
struct kvm_userspace_memory_region *mem,
|
2007-11-20 11:25:04 +03:00
|
|
|
int user_alloc)
|
|
|
|
{
|
2009-12-23 19:35:18 +03:00
|
|
|
int npages = memslot->npages;
|
2010-06-21 11:57:45 +04:00
|
|
|
int map_flags = MAP_PRIVATE | MAP_ANONYMOUS;
|
|
|
|
|
|
|
|
/* Prevent internal slot pages from being moved by fork()/COW. */
|
|
|
|
if (memslot->id >= KVM_MEMORY_SLOTS)
|
|
|
|
map_flags = MAP_SHARED | MAP_ANONYMOUS;
|
2007-11-20 11:25:04 +03:00
|
|
|
|
|
|
|
/*To keep backward compatibility with older userspace,
|
|
|
|
*x86 needs to hanlde !user_alloc case.
|
|
|
|
*/
|
|
|
|
if (!user_alloc) {
|
|
|
|
if (npages && !old.rmap) {
|
2008-07-25 18:32:03 +04:00
|
|
|
unsigned long userspace_addr;
|
|
|
|
|
2008-02-10 19:04:15 +03:00
|
|
|
down_write(¤t->mm->mmap_sem);
|
2008-07-25 18:32:03 +04:00
|
|
|
userspace_addr = do_mmap(NULL, 0,
|
|
|
|
npages * PAGE_SIZE,
|
|
|
|
PROT_READ | PROT_WRITE,
|
2010-06-21 11:57:45 +04:00
|
|
|
map_flags,
|
2008-07-25 18:32:03 +04:00
|
|
|
0);
|
2008-02-10 19:04:15 +03:00
|
|
|
up_write(¤t->mm->mmap_sem);
|
2007-11-20 11:25:04 +03:00
|
|
|
|
2008-07-25 18:32:03 +04:00
|
|
|
if (IS_ERR((void *)userspace_addr))
|
|
|
|
return PTR_ERR((void *)userspace_addr);
|
|
|
|
|
|
|
|
memslot->userspace_addr = userspace_addr;
|
2007-11-20 11:25:04 +03:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2009-12-23 19:35:18 +03:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
void kvm_arch_commit_memory_region(struct kvm *kvm,
|
|
|
|
struct kvm_userspace_memory_region *mem,
|
|
|
|
struct kvm_memory_slot old,
|
|
|
|
int user_alloc)
|
|
|
|
{
|
|
|
|
|
|
|
|
int npages = mem->memory_size >> PAGE_SHIFT;
|
|
|
|
|
|
|
|
if (!user_alloc && !old.user_alloc && old.rmap && !npages) {
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
down_write(¤t->mm->mmap_sem);
|
|
|
|
ret = do_munmap(current->mm, old.userspace_addr,
|
|
|
|
old.npages * PAGE_SIZE);
|
|
|
|
up_write(¤t->mm->mmap_sem);
|
|
|
|
if (ret < 0)
|
|
|
|
printk(KERN_WARNING
|
|
|
|
"kvm_vm_ioctl_set_memory_region: "
|
|
|
|
"failed to munmap memory\n");
|
|
|
|
}
|
|
|
|
|
2009-05-13 01:55:43 +04:00
|
|
|
spin_lock(&kvm->mmu_lock);
|
2007-12-14 05:01:48 +03:00
|
|
|
if (!kvm->arch.n_requested_mmu_pages) {
|
2007-11-20 11:25:04 +03:00
|
|
|
unsigned int nr_mmu_pages = kvm_mmu_calculate_mmu_pages(kvm);
|
|
|
|
kvm_mmu_change_mmu_pages(kvm, nr_mmu_pages);
|
|
|
|
}
|
|
|
|
|
|
|
|
kvm_mmu_slot_remove_write_access(kvm, mem->slot);
|
2009-05-13 01:55:43 +04:00
|
|
|
spin_unlock(&kvm->mmu_lock);
|
2007-11-20 11:25:04 +03:00
|
|
|
}
|
2007-12-14 04:35:10 +03:00
|
|
|
|
2008-07-11 03:49:31 +04:00
|
|
|
void kvm_arch_flush_shadow(struct kvm *kvm)
|
|
|
|
{
|
|
|
|
kvm_mmu_zap_all(kvm);
|
2009-05-13 01:55:45 +04:00
|
|
|
kvm_reload_remote_mmus(kvm);
|
2008-07-11 03:49:31 +04:00
|
|
|
}
|
|
|
|
|
2007-12-14 04:35:10 +03:00
|
|
|
int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
2008-04-13 18:54:35 +04:00
|
|
|
return vcpu->arch.mp_state == KVM_MP_STATE_RUNNABLE
|
2009-07-09 16:33:52 +04:00
|
|
|
|| vcpu->arch.mp_state == KVM_MP_STATE_SIPI_RECEIVED
|
|
|
|
|| vcpu->arch.nmi_pending ||
|
|
|
|
(kvm_arch_interrupt_allowed(vcpu) &&
|
|
|
|
kvm_cpu_has_interrupt(vcpu));
|
2007-12-14 04:35:10 +03:00
|
|
|
}
|
2007-12-17 09:21:40 +03:00
|
|
|
|
|
|
|
void kvm_vcpu_kick(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
2009-05-08 00:55:12 +04:00
|
|
|
int me;
|
|
|
|
int cpu = vcpu->cpu;
|
2007-12-17 09:21:40 +03:00
|
|
|
|
|
|
|
if (waitqueue_active(&vcpu->wq)) {
|
|
|
|
wake_up_interruptible(&vcpu->wq);
|
|
|
|
++vcpu->stat.halt_wakeup;
|
|
|
|
}
|
2009-05-08 00:55:12 +04:00
|
|
|
|
|
|
|
me = get_cpu();
|
|
|
|
if (cpu != me && (unsigned)cpu < nr_cpu_ids && cpu_online(cpu))
|
2010-05-03 17:54:48 +04:00
|
|
|
if (atomic_xchg(&vcpu->guest_mode, 0))
|
2009-05-08 00:55:12 +04:00
|
|
|
smp_send_reschedule(cpu);
|
2008-04-11 22:01:22 +04:00
|
|
|
put_cpu();
|
2007-12-17 09:21:40 +03:00
|
|
|
}
|
2009-03-23 13:12:11 +03:00
|
|
|
|
|
|
|
int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
return kvm_x86_ops->interrupt_allowed(vcpu);
|
|
|
|
}
|
2009-06-17 16:22:14 +04:00
|
|
|
|
2010-02-23 19:47:55 +03:00
|
|
|
bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip)
|
|
|
|
{
|
|
|
|
unsigned long current_rip = kvm_rip_read(vcpu) +
|
|
|
|
get_segment_base(vcpu, VCPU_SREG_CS);
|
|
|
|
|
|
|
|
return current_rip == linear_rip;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(kvm_is_linear_rip);
|
|
|
|
|
2009-10-18 15:24:44 +04:00
|
|
|
unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
unsigned long rflags;
|
|
|
|
|
|
|
|
rflags = kvm_x86_ops->get_rflags(vcpu);
|
|
|
|
if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)
|
2010-02-23 19:47:58 +03:00
|
|
|
rflags &= ~X86_EFLAGS_TF;
|
2009-10-18 15:24:44 +04:00
|
|
|
return rflags;
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(kvm_get_rflags);
|
|
|
|
|
|
|
|
void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags)
|
|
|
|
{
|
|
|
|
if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP &&
|
2010-02-23 19:47:55 +03:00
|
|
|
kvm_is_linear_rip(vcpu, vcpu->arch.singlestep_rip))
|
2010-02-23 19:47:58 +03:00
|
|
|
rflags |= X86_EFLAGS_TF;
|
2009-10-18 15:24:44 +04:00
|
|
|
kvm_x86_ops->set_rflags(vcpu, rflags);
|
|
|
|
}
|
|
|
|
EXPORT_SYMBOL_GPL(kvm_set_rflags);
|
|
|
|
|
2009-06-17 16:22:14 +04:00
|
|
|
EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_exit);
|
|
|
|
EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_inj_virq);
|
|
|
|
EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_page_fault);
|
|
|
|
EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_msr);
|
|
|
|
EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_cr);
|
2009-10-09 18:08:27 +04:00
|
|
|
EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_nested_vmrun);
|
2009-10-09 18:08:28 +04:00
|
|
|
EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_nested_vmexit);
|
2009-10-09 18:08:29 +04:00
|
|
|
EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_nested_vmexit_inject);
|
2009-10-09 18:08:30 +04:00
|
|
|
EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_nested_intr_vmexit);
|
2009-10-09 18:08:31 +04:00
|
|
|
EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_invlpga);
|
2009-10-09 18:08:32 +04:00
|
|
|
EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_skinit);
|
2010-02-24 20:59:14 +03:00
|
|
|
EXPORT_TRACEPOINT_SYMBOL_GPL(kvm_nested_intercepts);
|