478 строки
12 KiB
Plaintext
478 строки
12 KiB
Plaintext
#
|
|
# For a description of the syntax of this configuration file,
|
|
# see Documentation/kbuild/kconfig-language.txt.
|
|
#
|
|
# Note: ISA is disabled and will hopefully never be enabled.
|
|
# If you managed to buy an ISA x86-64 box you'll have to fix all the
|
|
# ISA drivers you need yourself.
|
|
#
|
|
|
|
mainmenu "Linux Kernel Configuration"
|
|
|
|
config X86_64
|
|
bool
|
|
default y
|
|
help
|
|
Port to the x86-64 architecture. x86-64 is a 64-bit extension to the
|
|
classical 32-bit x86 architecture. For details see
|
|
<http://www.x86-64.org/>.
|
|
|
|
config 64BIT
|
|
def_bool y
|
|
|
|
config X86
|
|
bool
|
|
default y
|
|
|
|
config MMU
|
|
bool
|
|
default y
|
|
|
|
config ISA
|
|
bool
|
|
|
|
config SBUS
|
|
bool
|
|
|
|
config RWSEM_GENERIC_SPINLOCK
|
|
bool
|
|
default y
|
|
|
|
config RWSEM_XCHGADD_ALGORITHM
|
|
bool
|
|
|
|
config GENERIC_CALIBRATE_DELAY
|
|
bool
|
|
default y
|
|
|
|
config X86_CMPXCHG
|
|
bool
|
|
default y
|
|
|
|
config EARLY_PRINTK
|
|
bool
|
|
default y
|
|
|
|
config GENERIC_ISA_DMA
|
|
bool
|
|
default y
|
|
|
|
config GENERIC_IOMAP
|
|
bool
|
|
default y
|
|
|
|
source "init/Kconfig"
|
|
|
|
|
|
menu "Processor type and features"
|
|
|
|
choice
|
|
prompt "Processor family"
|
|
default MK8
|
|
|
|
config MK8
|
|
bool "AMD-Opteron/Athlon64"
|
|
help
|
|
Optimize for AMD Opteron/Athlon64/Hammer/K8 CPUs.
|
|
|
|
config MPSC
|
|
bool "Intel EM64T"
|
|
help
|
|
Optimize for Intel Pentium 4 and Xeon CPUs with Intel
|
|
Extended Memory 64 Technology(EM64T). For details see
|
|
<http://www.intel.com/technology/64bitextensions/>.
|
|
|
|
config GENERIC_CPU
|
|
bool "Generic-x86-64"
|
|
help
|
|
Generic x86-64 CPU.
|
|
|
|
endchoice
|
|
|
|
#
|
|
# Define implied options from the CPU selection here
|
|
#
|
|
config X86_L1_CACHE_BYTES
|
|
int
|
|
default "128" if GENERIC_CPU || MPSC
|
|
default "64" if MK8
|
|
|
|
config X86_L1_CACHE_SHIFT
|
|
int
|
|
default "7" if GENERIC_CPU || MPSC
|
|
default "6" if MK8
|
|
|
|
config X86_TSC
|
|
bool
|
|
default y
|
|
|
|
config X86_GOOD_APIC
|
|
bool
|
|
default y
|
|
|
|
config MICROCODE
|
|
tristate "/dev/cpu/microcode - Intel CPU microcode support"
|
|
---help---
|
|
If you say Y here the 'File systems' section, you will be
|
|
able to update the microcode on Intel processors. You will
|
|
obviously need the actual microcode binary data itself which is
|
|
not shipped with the Linux kernel.
|
|
|
|
For latest news and information on obtaining all the required
|
|
ingredients for this driver, check:
|
|
<http://www.urbanmyth.org/microcode/>.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called microcode.
|
|
If you use modprobe or kmod you may also want to add the line
|
|
'alias char-major-10-184 microcode' to your /etc/modules.conf file.
|
|
|
|
config X86_MSR
|
|
tristate "/dev/cpu/*/msr - Model-specific register support"
|
|
help
|
|
This device gives privileged processes access to the x86
|
|
Model-Specific Registers (MSRs). It is a character device with
|
|
major 202 and minors 0 to 31 for /dev/cpu/0/msr to /dev/cpu/31/msr.
|
|
MSR accesses are directed to a specific CPU on multi-processor
|
|
systems.
|
|
|
|
config X86_CPUID
|
|
tristate "/dev/cpu/*/cpuid - CPU information support"
|
|
help
|
|
This device gives processes access to the x86 CPUID instruction to
|
|
be executed on a specific processor. It is a character device
|
|
with major 203 and minors 0 to 31 for /dev/cpu/0/cpuid to
|
|
/dev/cpu/31/cpuid.
|
|
|
|
# disable it for opteron optimized builds because it pulls in ACPI_BOOT
|
|
config X86_HT
|
|
bool
|
|
depends on SMP && !MK8
|
|
default y
|
|
|
|
config MATH_EMULATION
|
|
bool
|
|
|
|
config MCA
|
|
bool
|
|
|
|
config EISA
|
|
bool
|
|
|
|
config X86_IO_APIC
|
|
bool
|
|
default y
|
|
|
|
config X86_LOCAL_APIC
|
|
bool
|
|
default y
|
|
|
|
config MTRR
|
|
bool "MTRR (Memory Type Range Register) support"
|
|
---help---
|
|
On Intel P6 family processors (Pentium Pro, Pentium II and later)
|
|
the Memory Type Range Registers (MTRRs) may be used to control
|
|
processor access to memory ranges. This is most useful if you have
|
|
a video (VGA) card on a PCI or AGP bus. Enabling write-combining
|
|
allows bus write transfers to be combined into a larger transfer
|
|
before bursting over the PCI/AGP bus. This can increase performance
|
|
of image write operations 2.5 times or more. Saying Y here creates a
|
|
/proc/mtrr file which may be used to manipulate your processor's
|
|
MTRRs. Typically the X server should use this.
|
|
|
|
This code has a reasonably generic interface so that similar
|
|
control registers on other processors can be easily supported
|
|
as well.
|
|
|
|
Saying Y here also fixes a problem with buggy SMP BIOSes which only
|
|
set the MTRRs for the boot CPU and not for the secondary CPUs. This
|
|
can lead to all sorts of problems, so it's good to say Y here.
|
|
|
|
Just say Y here, all x86-64 machines support MTRRs.
|
|
|
|
See <file:Documentation/mtrr.txt> for more information.
|
|
|
|
config SMP
|
|
bool "Symmetric multi-processing support"
|
|
---help---
|
|
This enables support for systems with more than one CPU. If you have
|
|
a system with only one CPU, like most personal computers, say N. If
|
|
you have a system with more than one CPU, say Y.
|
|
|
|
If you say N here, the kernel will run on single and multiprocessor
|
|
machines, but will use only one CPU of a multiprocessor machine. If
|
|
you say Y here, the kernel will run on many, but not all,
|
|
singleprocessor machines. On a singleprocessor machine, the kernel
|
|
will run faster if you say N here.
|
|
|
|
If you don't know what to do here, say N.
|
|
|
|
config PREEMPT
|
|
bool "Preemptible Kernel"
|
|
---help---
|
|
This option reduces the latency of the kernel when reacting to
|
|
real-time or interactive events by allowing a low priority process to
|
|
be preempted even if it is in kernel mode executing a system call.
|
|
This allows applications to run more reliably even when the system is
|
|
under load. On contrary it may also break your drivers and add
|
|
priority inheritance problems to your system. Don't select it if
|
|
you rely on a stable system or have slightly obscure hardware.
|
|
It's also not very well tested on x86-64 currently.
|
|
You have been warned.
|
|
|
|
Say Y here if you are feeling brave and building a kernel for a
|
|
desktop, embedded or real-time system. Say N if you are unsure.
|
|
|
|
config PREEMPT_BKL
|
|
bool "Preempt The Big Kernel Lock"
|
|
depends on PREEMPT
|
|
default y
|
|
help
|
|
This option reduces the latency of the kernel by making the
|
|
big kernel lock preemptible.
|
|
|
|
Say Y here if you are building a kernel for a desktop system.
|
|
Say N if you are unsure.
|
|
|
|
config SCHED_SMT
|
|
bool "SMT (Hyperthreading) scheduler support"
|
|
depends on SMP
|
|
default n
|
|
help
|
|
SMT scheduler support improves the CPU scheduler's decision making
|
|
when dealing with Intel Pentium 4 chips with HyperThreading at a
|
|
cost of slightly increased overhead in some places. If unsure say
|
|
N here.
|
|
|
|
config K8_NUMA
|
|
bool "K8 NUMA support"
|
|
select NUMA
|
|
depends on SMP
|
|
help
|
|
Enable NUMA (Non Unified Memory Architecture) support for
|
|
AMD Opteron Multiprocessor systems. The kernel will try to allocate
|
|
memory used by a CPU on the local memory controller of the CPU
|
|
and add some more NUMA awareness to the kernel.
|
|
This code is recommended on all multiprocessor Opteron systems
|
|
and normally doesn't hurt on others.
|
|
|
|
config NUMA_EMU
|
|
bool "NUMA emulation support"
|
|
select NUMA
|
|
depends on SMP
|
|
help
|
|
Enable NUMA emulation. A flat machine will be split
|
|
into virtual nodes when booted with "numa=fake=N", where N is the
|
|
number of nodes. This is only useful for debugging.
|
|
|
|
config DISCONTIGMEM
|
|
bool
|
|
depends on NUMA
|
|
default y
|
|
|
|
config NUMA
|
|
bool
|
|
default n
|
|
|
|
config HAVE_DEC_LOCK
|
|
bool
|
|
depends on SMP
|
|
default y
|
|
|
|
config NR_CPUS
|
|
int "Maximum number of CPUs (2-256)"
|
|
range 2 256
|
|
depends on SMP
|
|
default "8"
|
|
help
|
|
This allows you to specify the maximum number of CPUs which this
|
|
kernel will support. Current maximum is 256 CPUs due to
|
|
APIC addressing limits. Less depending on the hardware.
|
|
|
|
This is purely to save memory - each supported CPU requires
|
|
memory in the static kernel configuration.
|
|
|
|
config HPET_TIMER
|
|
bool
|
|
default y
|
|
help
|
|
Use the IA-PC HPET (High Precision Event Timer) to manage
|
|
time in preference to the PIT and RTC, if a HPET is
|
|
present. The HPET provides a stable time base on SMP
|
|
systems, unlike the TSC, but it is more expensive to access,
|
|
as it is off-chip. You can find the HPET spec at
|
|
<http://www.intel.com/labs/platcomp/hpet/hpetspec.htm>.
|
|
|
|
config HPET_EMULATE_RTC
|
|
bool "Provide RTC interrupt"
|
|
depends on HPET_TIMER && RTC=y
|
|
|
|
config GART_IOMMU
|
|
bool "IOMMU support"
|
|
depends on PCI
|
|
help
|
|
Support the K8 IOMMU. Needed to run systems with more than 4GB of memory
|
|
properly with 32-bit PCI devices that do not support DAC (Double Address
|
|
Cycle). The IOMMU can be turned off at runtime with the iommu=off parameter.
|
|
Normally the kernel will take the right choice by itself.
|
|
If unsure, say Y.
|
|
|
|
# need this always enabled with GART_IOMMU for the VIA workaround
|
|
config SWIOTLB
|
|
bool
|
|
depends on GART_IOMMU
|
|
default y
|
|
|
|
config DUMMY_IOMMU
|
|
bool
|
|
depends on !GART_IOMMU && !SWIOTLB
|
|
default y
|
|
help
|
|
Don't use IOMMU code. This will cause problems when you have more than 4GB
|
|
of memory and any 32-bit devices. Don't turn on unless you know what you
|
|
are doing.
|
|
|
|
config X86_MCE
|
|
bool "Machine check support" if EMBEDDED
|
|
default y
|
|
help
|
|
Include a machine check error handler to report hardware errors.
|
|
This version will require the mcelog utility to decode some
|
|
machine check error logs. See
|
|
ftp://ftp.x86-64.org/pub/linux/tools/mcelog
|
|
|
|
config X86_MCE_INTEL
|
|
bool "Intel MCE features"
|
|
depends on X86_MCE && X86_LOCAL_APIC
|
|
default y
|
|
help
|
|
Additional support for intel specific MCE features such as
|
|
the thermal monitor.
|
|
|
|
config SECCOMP
|
|
bool "Enable seccomp to safely compute untrusted bytecode"
|
|
depends on PROC_FS
|
|
default y
|
|
help
|
|
This kernel feature is useful for number crunching applications
|
|
that may need to compute untrusted bytecode during their
|
|
execution. By using pipes or other transports made available to
|
|
the process as file descriptors supporting the read/write
|
|
syscalls, it's possible to isolate those applications in
|
|
their own address space using seccomp. Once seccomp is
|
|
enabled via /proc/<pid>/seccomp, it cannot be disabled
|
|
and the task is only allowed to execute a few safe syscalls
|
|
defined by each seccomp mode.
|
|
|
|
If unsure, say Y. Only embedded should say N here.
|
|
|
|
endmenu
|
|
|
|
#
|
|
# Use the generic interrupt handling code in kernel/irq/:
|
|
#
|
|
config GENERIC_HARDIRQS
|
|
bool
|
|
default y
|
|
|
|
config GENERIC_IRQ_PROBE
|
|
bool
|
|
default y
|
|
|
|
menu "Power management options"
|
|
|
|
source kernel/power/Kconfig
|
|
|
|
source "drivers/acpi/Kconfig"
|
|
|
|
source "arch/x86_64/kernel/cpufreq/Kconfig"
|
|
|
|
endmenu
|
|
|
|
menu "Bus options (PCI etc.)"
|
|
|
|
config PCI
|
|
bool "PCI support"
|
|
|
|
# x86-64 doesn't support PCI BIOS access from long mode so always go direct.
|
|
config PCI_DIRECT
|
|
bool
|
|
depends on PCI
|
|
default y
|
|
|
|
config PCI_MMCONFIG
|
|
bool "Support mmconfig PCI config space access"
|
|
depends on PCI
|
|
select ACPI_BOOT
|
|
|
|
config UNORDERED_IO
|
|
bool "Unordered IO mapping access"
|
|
depends on EXPERIMENTAL
|
|
help
|
|
Use unordered stores to access IO memory mappings in device drivers.
|
|
Still very experimental. When a driver works on IA64/ppc64/pa-risc it should
|
|
work with this option, but it makes the drivers behave differently
|
|
from i386. Requires that the driver writer used memory barriers
|
|
properly.
|
|
|
|
source "drivers/pci/pcie/Kconfig"
|
|
|
|
source "drivers/pci/Kconfig"
|
|
|
|
source "drivers/pcmcia/Kconfig"
|
|
|
|
source "drivers/pci/hotplug/Kconfig"
|
|
|
|
endmenu
|
|
|
|
|
|
menu "Executable file formats / Emulations"
|
|
|
|
source "fs/Kconfig.binfmt"
|
|
|
|
config IA32_EMULATION
|
|
bool "IA32 Emulation"
|
|
help
|
|
Include code to run 32-bit programs under a 64-bit kernel. You should likely
|
|
turn this on, unless you're 100% sure that you don't have any 32-bit programs
|
|
left.
|
|
|
|
config IA32_AOUT
|
|
bool "IA32 a.out support"
|
|
depends on IA32_EMULATION
|
|
help
|
|
Support old a.out binaries in the 32bit emulation.
|
|
|
|
config COMPAT
|
|
bool
|
|
depends on IA32_EMULATION
|
|
default y
|
|
|
|
config SYSVIPC_COMPAT
|
|
bool
|
|
depends on COMPAT && SYSVIPC
|
|
default y
|
|
|
|
config UID16
|
|
bool
|
|
depends on IA32_EMULATION
|
|
default y
|
|
|
|
endmenu
|
|
|
|
source drivers/Kconfig
|
|
|
|
source "drivers/firmware/Kconfig"
|
|
|
|
source fs/Kconfig
|
|
|
|
source "arch/x86_64/oprofile/Kconfig"
|
|
|
|
source "arch/x86_64/Kconfig.debug"
|
|
|
|
source "security/Kconfig"
|
|
|
|
source "crypto/Kconfig"
|
|
|
|
source "lib/Kconfig"
|