kernel-fxtec-pro1x/arch/x86/kvm
Takuya Yoshikawa c125c60732 KVM: fix load_guest_segment_descriptor() to return X86EMUL_*
This patch fixes load_guest_segment_descriptor() to return
X86EMUL_PROPAGATE_FAULT when it tries to access the descriptor
table beyond the limit of it: suggested by Marcelo.

I have checked current callers of this helper function,
  - kvm_load_segment_descriptor()
  - kvm_task_switch()
and confirmed that this patch will change nothing in the
upper layers if we do not change the handling of this
return value from load_guest_segment_descriptor().

Next step: Although fixing the kvm_task_switch() to handle the
propagated faults properly seems difficult, and maybe not worth
it because TSS is not used commonly these days, we can fix
kvm_load_segment_descriptor(). By doing so, the injected #GP
becomes possible to be handled by the guest. The only problem
for this is how to differentiate this fault from the page faults
generated by kvm_read_guest_virt(). We may have to split this
function to achive this goal.

Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2010-03-01 12:36:07 -03:00
..
emulate.c KVM: Move cr0/cr4/efer related helpers to x86.h 2010-03-01 12:36:04 -03:00
i8254.c KVM: convert slots_lock to a mutex 2010-03-01 12:35:45 -03:00
i8254.h KVM: PIT support for HPET legacy mode 2009-09-10 08:33:12 +03:00
i8259.c KVM: convert slots_lock to a mutex 2010-03-01 12:35:45 -03:00
irq.c KVM: Remove irq_pending bitmap 2009-06-10 11:48:57 +03:00
irq.h KVM: x86: disallow multiple KVM_CREATE_IRQCHIP 2009-12-03 09:32:23 +02:00
Kconfig KVM: Add KVM_MMIO kconfig item 2010-03-01 12:35:41 -03:00
kvm_cache_regs.h KVM: Optimize kvm_read_cr[04]_bits() 2010-03-01 12:36:05 -03:00
kvm_timer.h KVM: Use pointer to vcpu instead of vcpu_id in timer code. 2009-09-10 08:32:52 +03:00
lapic.c KVM: Add HYPER-V apic access MSRs 2010-03-01 12:36:00 -03:00
lapic.h KVM: Add HYPER-V apic access MSRs 2010-03-01 12:36:00 -03:00
Makefile KVM: Move assigned device code to own file 2009-12-03 09:32:09 +02:00
mmu.c KVM: MMU: Remove some useless code from alloc_mmu_pages() 2010-03-01 12:36:05 -03:00
mmu.h KVM: Move cr0/cr4/efer related helpers to x86.h 2010-03-01 12:36:04 -03:00
mmutrace.h KVM: Trace shadow page lifecycle 2009-09-10 08:33:10 +03:00
paging_tmpl.h KVM: rename is_writeble_pte() to is_writable_pte() 2010-03-01 12:36:00 -03:00
svm.c KVM: Trace failed msr reads and writes 2010-03-01 12:36:06 -03:00
timer.c KVM: Drop useless atomic test from timer function 2009-09-10 08:32:57 +03:00
trace.h KVM: Trace failed msr reads and writes 2010-03-01 12:36:06 -03:00
tss.h KVM: x86: hardware task switching support 2008-04-27 12:00:39 +03:00
vmx.c KVM: VMX: Remove redundant check in vm_need_virtualize_apic_accesses() 2010-03-01 12:36:06 -03:00
x86.c KVM: fix load_guest_segment_descriptor() to return X86EMUL_* 2010-03-01 12:36:07 -03:00
x86.h KVM: Rename vcpu->shadow_efer to efer 2010-03-01 12:36:04 -03:00