[PATCH 14/30] KVM: x86: hyper-v: Honor HV_ACCESS_FREQUENCY_MSRS privilege bit

[Vitaly Kuznetsov]

HV_X64_MSR_TSC_FREQUENCY/HV_X64_MSR_APIC_FREQUENCY are only available to
guest when HV_ACCESS_FREQUENCY_MSRS bit is exposed.

Signed-off-by: Vitaly Kuznetsov <vkuzn...@redhat.com>
---
 arch/x86/kvm/hyperv.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c
index a41ad21768ed..8821981e17d3 100644
--- a/arch/x86/kvm/hyperv.c
+++ b/arch/x86/kvm/hyperv.c
@@ -1244,6 +1244,10 @@ static bool hv_check_msr_access(struct kvm_vcpu_hv 
*hv_vcpu, u32 msr)
                return hv_vcpu->cpuid_cache.features_eax &
                        HV_MSR_APIC_ACCESS_AVAILABLE;
                break;
+       case HV_X64_MSR_TSC_FREQUENCY:
+       case HV_X64_MSR_APIC_FREQUENCY:
+               return hv_vcpu->cpuid_cache.features_eax &
+                       HV_ACCESS_FREQUENCY_MSRS;
        default:
                break;
        }
-- 
2.30.2