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| author |   Sean Christopherson <seanjc@google.com> | 2023-02-27 14:10:10 +0530 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2023-03-22 12:34:32 -0700 |
| commit | 2cb9317377caaec647d7485bc53ab33a0b54f27c (patch) | |
| tree | dc7cae9536001d58f6e2f3f13b50deadb36e2991 | |
| parent | KVM: SVM: add wrappers to enable/disable IRET interception (diff) | |
| download | wireguard-linux-2cb9317377caaec647d7485bc53ab33a0b54f27c.tar.xz wireguard-linux-2cb9317377caaec647d7485bc53ab33a0b54f27c.zip | |
KVM: x86: Raise an event request when processing NMIs if an NMI is pending
Don't raise KVM_REQ_EVENT if no NMIs are pending at the end of
process_nmi(). Finishing process_nmi() without a pending NMI will become
much more likely when KVM gains support for AMD's vNMI, which allows
pending vNMIs in hardware, i.e. doesn't require explicit injection.
Signed-off-by: Santosh Shukla <Santosh.Shukla@amd.com>
Link: https://lore.kernel.org/r/20230227084016.3368-6-santosh.shukla@amd.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
| -rw-r--r-- | arch/x86/kvm/x86.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 237c483b1230..3c995483b405 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -10150,7 +10150,9 @@ static void process_nmi(struct kvm_vcpu *vcpu) vcpu->arch.nmi_pending += atomic_xchg(&vcpu->arch.nmi_queued, 0); vcpu->arch.nmi_pending = min(vcpu->arch.nmi_pending, limit); - kvm_make_request(KVM_REQ_EVENT, vcpu); + + if (vcpu->arch.nmi_pending) + kvm_make_request(KVM_REQ_EVENT, vcpu); } void kvm_make_scan_ioapic_request_mask(struct kvm *kvm, |