Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-17 01:22:07 +00:00
Code Issues Packages Projects Releases Wiki Activity

KVM: nVMX: Do not inject NMI vmexits when L2 has a pending interrupt

Browse Source 
According to SDM 27.2.3, IDT vectoring information will not be valid on
vmexits caused by external NMIs. So we have to avoid creating such
scenarios by delaying EXIT_REASON_EXCEPTION_NMI injection as long as we
have a pending interrupt because that one would be migrated to L1's IDT
vectoring info on nested exit.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Jan Kiszka 2014-03-07 20:03:14 +01:00 committed by Paolo Bonzini
parent f4124500c2
commit 220c567297
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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

@ -8176,7 +8176,8 @@ static int vmx_check_nested_events(struct kvm_vcpu *vcpu, bool external_intr)
}
if (vcpu->arch.nmi_pending && nested_exit_on_nmi(vcpu)) {
if (vmx->nested.nested_run_pending)
if (vmx->nested.nested_run_pending ||
vcpu->arch.interrupt.pending)
return -EBUSY;
nested_vmx_vmexit(vcpu, EXIT_REASON_EXCEPTION_NMI,
NMI_VECTOR | INTR_TYPE_NMI_INTR |