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| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2021-05-21 11:51:46 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-06-17 13:09:41 -0400 |
| commit | eba60ddae794bdefb9531cb08e30c19a0bc53c15 (patch) | |
| tree | c5454ace33142eaeae8646064406e1620cf307ce /arch/x86/kvm/hyperv.c | |
| parent | 9e2715ca20d7b540a271464b3ac862cf387935c1 (diff) | |
| download | lwn-eba60ddae794bdefb9531cb08e30c19a0bc53c15.tar.gz lwn-eba60ddae794bdefb9531cb08e30c19a0bc53c15.zip | |
KVM: x86: hyper-v: Honor HV_MSR_SYNTIMER_AVAILABLE privilege bit
Synthetic timers MSRs (HV_X64_MSR_STIMER[0-3]_CONFIG,
HV_X64_MSR_STIMER[0-3]_COUNT) are only available to guest when
HV_MSR_SYNTIMER_AVAILABLE bit is exposed.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20210521095204.2161214-13-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 | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c index 9d3aed3bebcd..787fd58593dd 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -1236,6 +1236,16 @@ static bool hv_check_msr_access(struct kvm_vcpu_hv *hv_vcpu, u32 msr) case HV_X64_MSR_SINT0 ... HV_X64_MSR_SINT15: return hv_vcpu->cpuid_cache.features_eax & HV_MSR_SYNIC_AVAILABLE; + case HV_X64_MSR_STIMER0_CONFIG: + case HV_X64_MSR_STIMER1_CONFIG: + case HV_X64_MSR_STIMER2_CONFIG: + case HV_X64_MSR_STIMER3_CONFIG: + case HV_X64_MSR_STIMER0_COUNT: + case HV_X64_MSR_STIMER1_COUNT: + case HV_X64_MSR_STIMER2_COUNT: + case HV_X64_MSR_STIMER3_COUNT: + return hv_vcpu->cpuid_cache.features_eax & + HV_MSR_SYNTIMER_AVAILABLE; default: break; } |