KVM: selftests: Test Hyper-V invariant TSC control

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Add a test for the newly introduced Hyper-V invariant TSC control feature:
- HV_X64_MSR_TSC_INVARIANT_CONTROL is not available without
 HV_ACCESS_TSC_INVARIANT CPUID bit set and available with it.
- BIT(0) of HV_X64_MSR_TSC_INVARIANT_CONTROL controls the filtering of
architectural invariant TSC (CPUID.80000007H:EDX[8]) bit.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20221013095849.705943-8-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Vitaly Kuznetsov 2022-10-13 11:58:49 +02:00 • committed by Paolo Bonzini

parent 91a0b5478a

commit bd827bd775

3 changed files with 51 additions and 0 deletions

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3

tools/testing/selftests/kvm/include/x86_64/hyperv.h

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1

tools/testing/selftests/kvm/include/x86_64/processor.h

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47

tools/testing/selftests/kvm/x86_64/hyperv_features.c

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