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KVM: SVM: add warning for mistmatch between AVIC vcpu state and AVIC inhibition

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It is never a good idea to enter a guest on a vCPU when the
AVIC inhibition state doesn't match the enablement of
the AVIC on the vCPU.

Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20210810205251.424103-11-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Maxim Levitsky 2021-08-10 23:52:45 +03:00 committed by Paolo Bonzini
parent b0a1637f64
commit 4628efcd4e
1 changed files with 2 additions and 0 deletions
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2
arch/x86/kvm/svm/svm.c
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@ -3779,6 +3779,8 @@ static __no_kcsan fastpath_t svm_vcpu_run(struct kvm_vcpu *vcpu)
pre_svm_run(vcpu); pre_svm_run(vcpu);
WARN_ON_ONCE(kvm_apicv_activated(vcpu->kvm) != kvm_vcpu_apicv_active(vcpu));
sync_lapic_to_cr8(vcpu); sync_lapic_to_cr8(vcpu);
if (unlikely(svm->asid != svm->vmcb->control.asid)) { if (unlikely(svm->asid != svm->vmcb->control.asid)) {