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| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2021-05-21 11:51:47 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-06-17 13:09:41 -0400 |
| commit | 978b57475c7795824676122acb75a1dea264b6d1 (patch) | |
| tree | c5363583ebeedccbbedbe76ef95f9889177b3cbc /arch/x86/kvm/hyperv.c | |
| parent | eba60ddae794bdefb9531cb08e30c19a0bc53c15 (diff) | |
| download | lwn-978b57475c7795824676122acb75a1dea264b6d1.tar.gz lwn-978b57475c7795824676122acb75a1dea264b6d1.zip | |
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: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210521095204.2161214-14-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/hyperv.c')
| -rw-r--r-- | arch/x86/kvm/hyperv.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c index 787fd58593dd..a168b72334cc 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -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; } |