Messages in this thread Patch in this message | | | From | Maxim Levitsky <> | Subject | [PATCH v3 08/12] KVM: SVM: add warning for mistmatch between AVIC state and AVIC access page state | Date | Mon, 2 Aug 2021 21:33:25 +0300 |
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It is never a good idea to enter a guest when AVIC state doesn't match the state of the AVIC MMIO page state.
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com> --- arch/x86/kvm/svm/svm.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index 4feff53dd1d3..3923d383face 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -3781,6 +3781,9 @@ static __no_kcsan fastpath_t svm_vcpu_run(struct kvm_vcpu *vcpu) pre_svm_run(vcpu); + WARN_ON_ONCE(vcpu->kvm->arch.apic_access_memslot_enabled != + kvm_vcpu_apicv_active(vcpu)); + sync_lapic_to_cr8(vcpu); if (unlikely(svm->asid != svm->vmcb->control.asid)) { -- 2.26.3
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