diff options
| author | Andre Przywara <andre.przywara@amd.com> | 2010-12-21 11:12:07 +0100 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-01-12 11:31:07 +0200 |
| commit | dc25e89e07d5ef31c476117d2c76b34dbb22196c (patch) | |
| tree | 9fef452c4bd0704b9d74512a9a58dc5d5b742d53 /arch/x86/kvm/svm.c | |
| parent | df4f3108562dc6f6ae6648f2698df7f4c9acf52d (diff) | |
KVM: SVM: copy instruction bytes from VMCB
In case of a nested page fault or an intercepted #PF newer SVM
implementations provide a copy of the faulting instruction bytes
in the VMCB.
Use these bytes to feed the instruction emulator and avoid the costly
guest instruction fetch in this case.
Signed-off-by: Andre Przywara <andre.przywara@amd.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch/x86/kvm/svm.c')
| -rw-r--r-- | arch/x86/kvm/svm.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index a04c01e324b4..af4b911a8bed 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -1527,7 +1527,9 @@ static int pf_interception(struct vcpu_svm *svm) trace_kvm_page_fault(fault_address, error_code); if (!npt_enabled && kvm_event_needs_reinjection(&svm->vcpu)) kvm_mmu_unprotect_page_virt(&svm->vcpu, fault_address); - r = kvm_mmu_page_fault(&svm->vcpu, fault_address, error_code); + r = kvm_mmu_page_fault(&svm->vcpu, fault_address, error_code, + svm->vmcb->control.insn_bytes, + svm->vmcb->control.insn_len); break; case KVM_PV_REASON_PAGE_NOT_PRESENT: svm->apf_reason = 0; |