Commit 978b5747 authored by Vitaly Kuznetsov's avatar Vitaly Kuznetsov Committed by Paolo Bonzini
Browse files

KVM: x86: hyper-v: Honor HV_MSR_APIC_ACCESS_AVAILABLE privilege bit 



HV_X64_MSR_EOI, HV_X64_MSR_ICR, HV_X64_MSR_TPR, and
HV_X64_MSR_VP_ASSIST_PAGE  are only available to guest when
HV_MSR_APIC_ACCESS_AVAILABLE bit is exposed.

Signed-off-by: default avatarVitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210521095204.2161214-14-vkuznets@redhat.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent eba60dda

arch/x86/kvm/hyperv.c

+7 −0
Original line number Diff line number Diff line
@@ -1246,6 +1246,13 @@ static bool hv_check_msr_access(struct kvm_vcpu_hv *hv_vcpu, u32 msr) 
	case HV_X64_MSR_STIMER3_COUNT:

		return hv_vcpu->cpuid_cache.features_eax &

			HV_MSR_SYNTIMER_AVAILABLE;

	case HV_X64_MSR_EOI:

	case HV_X64_MSR_ICR:

	case HV_X64_MSR_TPR:

	case HV_X64_MSR_VP_ASSIST_PAGE:

		return hv_vcpu->cpuid_cache.features_eax &

			HV_MSR_APIC_ACCESS_AVAILABLE;

		break;

	default:

		break;

	}