Commit 0bba8fc2 authored by Sean Christopherson's avatar Sean Christopherson Committed by Paolo Bonzini
Browse files

KVM: SVM: Make an event request if INIT or SIPI is pending when GIF is set 



Set KVM_REQ_EVENT if INIT or SIPI is pending when the guest enables GIF.
INIT in particular is blocked when GIF=0 and needs to be processed when
GIF is toggled to '1'.  This bug has been masked by (a) KVM calling
->check_nested_events() in the core run loop and (b) hypervisors toggling
GIF from 0=>1 only when entering guest mode (L1 entering L2).

Signed-off-by: default avatarSean Christopherson <seanjc@google.com>
Message-Id: <20220921003201.1441511-7-seanjc@google.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent bf7f9352

arch/x86/kvm/svm/svm.c

+2 −1
Original line number Diff line number Diff line
@@ -2339,7 +2339,8 @@ void svm_set_gif(struct vcpu_svm *svm, bool value) 
		enable_gif(svm);

		if (svm->vcpu.arch.smi_pending ||

		    svm->vcpu.arch.nmi_pending ||

		    kvm_cpu_has_injectable_intr(&svm->vcpu))

		    kvm_cpu_has_injectable_intr(&svm->vcpu) ||

		    kvm_apic_has_pending_init_or_sipi(&svm->vcpu))

			kvm_make_request(KVM_REQ_EVENT, &svm->vcpu);

	} else {

		disable_gif(svm);