diff options
Diffstat (limited to 'arch/x86/kvm/svm.c')
| -rw-r--r-- | arch/x86/kvm/svm.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index fd3fc9fbefff..0d417276653b 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -6014,7 +6014,13 @@ static void svm_cpuid_update(struct kvm_vcpu *vcpu) if (!kvm_vcpu_apicv_active(vcpu)) return; - guest_cpuid_clear(vcpu, X86_FEATURE_X2APIC); + /* + * AVIC does not work with an x2APIC mode guest. If the X2APIC feature + * is exposed to the guest, disable AVIC. + */ + if (guest_cpuid_has(vcpu, X86_FEATURE_X2APIC)) + kvm_request_apicv_update(vcpu->kvm, false, + APICV_INHIBIT_REASON_X2APIC); /* * Currently, AVIC does not work with nested virtualization. @@ -6030,10 +6036,6 @@ static void svm_cpuid_update(struct kvm_vcpu *vcpu) static void svm_set_supported_cpuid(u32 func, struct kvm_cpuid_entry2 *entry) { switch (func) { - case 0x1: - if (avic) - entry->ecx &= ~F(X2APIC); - break; case 0x80000001: if (nested) entry->ecx |= (1 << 2); /* Set SVM bit */ @@ -7357,7 +7359,8 @@ static bool svm_check_apicv_inhibit_reasons(ulong bit) BIT(APICV_INHIBIT_REASON_HYPERV) | BIT(APICV_INHIBIT_REASON_NESTED) | BIT(APICV_INHIBIT_REASON_IRQWIN) | - BIT(APICV_INHIBIT_REASON_PIT_REINJ); + BIT(APICV_INHIBIT_REASON_PIT_REINJ) | + BIT(APICV_INHIBIT_REASON_X2APIC); return supported & BIT(bit); } |