diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2020-04-23 08:13:10 -0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-05-13 12:14:45 -0400 |
| commit | 221e761090b4ffadf41acaca1e1f6dd97d84ef4f (patch) | |
| tree | e45e99167f3366c3ca51d451fbdc70508c993e7d | |
| parent | fc6f7c03ad80693c953d5cdacfad41f174289531 (diff) | |
KVM: nSVM: Preserve IRQ/NMI/SMI priority irrespective of exiting behavior
Short circuit vmx_check_nested_events() if an unblocked IRQ/NMI/SMI is
pending and needs to be injected into L2, priority between coincident
events is not dependent on exiting behavior.
Fixes: b518ba9fa691 ("KVM: nSVM: implement check_nested_events for interrupts")
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | arch/x86/kvm/svm/nested.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c index 9c813e08e2cf..712db507c819 100644 --- a/arch/x86/kvm/svm/nested.c +++ b/arch/x86/kvm/svm/nested.c @@ -835,23 +835,29 @@ static int svm_check_nested_events(struct kvm_vcpu *vcpu) kvm_event_needs_reinjection(vcpu) || svm->nested.exit_required || svm->nested.nested_run_pending; - if (vcpu->arch.smi_pending && nested_exit_on_smi(svm)) { + if (vcpu->arch.smi_pending && !svm_smi_blocked(vcpu)) { if (block_nested_events) return -EBUSY; + if (!nested_exit_on_smi(svm)) + return 0; nested_svm_smi(svm); return 0; } - if (vcpu->arch.nmi_pending && nested_exit_on_nmi(svm)) { + if (vcpu->arch.nmi_pending && !svm_nmi_blocked(vcpu)) { if (block_nested_events) return -EBUSY; + if (!nested_exit_on_nmi(svm)) + return 0; nested_svm_nmi(svm); return 0; } - if (kvm_cpu_has_interrupt(vcpu) && nested_exit_on_intr(svm)) { + if (kvm_cpu_has_interrupt(vcpu) && !svm_interrupt_blocked(vcpu)) { if (block_nested_events) return -EBUSY; + if (!nested_exit_on_intr(svm)) + return 0; nested_svm_intr(svm); return 0; } |