From 4628efcd4e8963a41e877318cd10346dea9a6e00 Mon Sep 17 00:00:00 2001 From: Maxim Levitsky Date: Tue, 10 Aug 2021 23:52:45 +0300 Subject: KVM: SVM: add warning for mistmatch between AVIC vcpu state and AVIC inhibition 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 Message-Id: <20210810205251.424103-11-mlevitsk@redhat.com> Signed-off-by: Paolo Bonzini --- arch/x86/kvm/svm/svm.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/x86') diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index b1662d6baa71..22376fdd94f8 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -3779,6 +3779,8 @@ static __no_kcsan fastpath_t svm_vcpu_run(struct kvm_vcpu *vcpu) pre_svm_run(vcpu); + WARN_ON_ONCE(kvm_apicv_activated(vcpu->kvm) != kvm_vcpu_apicv_active(vcpu)); + sync_lapic_to_cr8(vcpu); if (unlikely(svm->asid != svm->vmcb->control.asid)) { -- cgit v1.2.3