WSL2-Linux-Kernel/virt/kvm
Jan Kiszka d0bfb940ec KVM: New guest debug interface
This rips out the support for KVM_DEBUG_GUEST and introduces a new IOCTL
instead: KVM_SET_GUEST_DEBUG. The IOCTL payload consists of a generic
part, controlling the "main switch" and the single-step feature. The
arch specific part adds an x86 interface for intercepting both types of
debug exceptions separately and re-injecting them when the host was not
interested. Moveover, the foundation for guest debugging via debug
registers is layed.

To signal breakpoint events properly back to userland, an arch-specific
data block is now returned along KVM_EXIT_DEBUG. For x86, the arch block
contains the PC, the debug exception, and relevant debug registers to
tell debug events properly apart.

The availability of this new interface is signaled by
KVM_CAP_SET_GUEST_DEBUG. Empty stubs for not yet supported archs are
provided.

Note that both SVM and VTX are supported, but only the latter was tested
yet. Based on the experience with all those VTX corner case, I would be
fairly surprised if SVM will work out of the box.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
2009-03-24 11:02:49 +02:00
..
coalesced_mmio.c KVM: Add coalesced MMIO support (common part) 2008-07-20 12:42:31 +03:00
coalesced_mmio.h KVM: Add coalesced MMIO support (common part) 2008-07-20 12:42:31 +03:00
ioapic.c KVM: Export ioapic_get_delivery_bitmask 2008-12-31 16:55:01 +02:00
ioapic.h KVM: Export ioapic_get_delivery_bitmask 2008-12-31 16:55:01 +02:00
iodev.h KVM: kvm_io_device: extend in_range() to manage len and write attribute 2008-07-20 12:42:30 +03:00
iommu.c KVM: Fix assigned devices circular locking dependency 2009-02-15 02:47:39 +02:00
irq_comm.c KVM: add KVM_USERSPACE_IRQ_SOURCE_ID assertions 2008-12-31 16:55:07 +02:00
kvm_main.c KVM: New guest debug interface 2009-03-24 11:02:49 +02:00
kvm_trace.c KVM: Prevent trace call into unloaded module text 2008-12-31 16:55:04 +02:00