Commit 2cb93173 authored by Sean Christopherson's avatar Sean Christopherson
Browse files

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: default avatarSantosh Shukla <Santosh.Shukla@amd.com>
Link: https://lore.kernel.org/r/20230227084016.3368-6-santosh.shukla@amd.com


Signed-off-by: default avatarSean Christopherson <seanjc@google.com>
parent 772f254d

arch/x86/kvm/x86.c

+3 −1
Original line number Diff line number Diff line
@@ -10150,6 +10150,8 @@ 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);



	if (vcpu->arch.nmi_pending)

		kvm_make_request(KVM_REQ_EVENT, vcpu);

}