korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-12-03 00:54:09 +08:00
Code Issues Packages Projects Releases Wiki Activity

KVM: Unprotect a page if #PF happens during NMI injection.

Browse Source 
It is done for exception and interrupt already.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Gleb Natapov 2009-05-11 13:35:46 +03:00 committed by Avi Kivity
parent 51e4d5ab28
commit 3298b75c88
3 changed files with 8 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
arch/x86/kvm/svm.c
View File

@ -1122,8 +1122,7 @@ static int pf_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
if (npt_enabled)
svm_flush_tlb(&svm->vcpu);
else {
if (svm->vcpu.arch.interrupt.pending ||
svm->vcpu.arch.exception.pending)
if (kvm_event_needs_reinjection(&svm->vcpu))
kvm_mmu_unprotect_page_virt(&svm->vcpu, fault_address);
}
return kvm_mmu_page_fault(&svm->vcpu, fault_address, error_code);

2
arch/x86/kvm/vmx.c
View File

@ -2615,7 +2615,7 @@ static int handle_exception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
cr2 = vmcs_readl(EXIT_QUALIFICATION);
KVMTRACE_3D(PAGE_FAULT, vcpu, error_code, (u32)cr2,
(u32)((u64)cr2 >> 32), handler);
if (vcpu->arch.interrupt.pending || vcpu->arch.exception.pending)
if (kvm_event_needs_reinjection(vcpu))
kvm_mmu_unprotect_page_virt(vcpu, cr2);
return kvm_mmu_page_fault(vcpu, cr2, error_code);
}

6
arch/x86/kvm/x86.h
View File

@ -30,4 +30,10 @@ static inline u8 kvm_pop_irq(struct kvm_vcpu *vcpu)
clear_bit(word_index, &vcpu->arch.irq_summary);
return irq;
}
static inline bool kvm_event_needs_reinjection(struct kvm_vcpu *vcpu)
{
return vcpu->arch.exception.pending || vcpu->arch.interrupt.pending ||
vcpu->arch.nmi_injected;
}
#endif