KVM: selftests: Verify LBRs are disabled if vPMU is disabled

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Verify that disabling the guest's vPMU via CPUID also disables LBRs.
KVM has had at least one bug where LBRs would remain enabled even though
the intent was to disable everything PMU related.

Link: https://lore.kernel.org/r/20230311004618.920745-22-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

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Sean Christopherson 2023-03-10 16:46:18 -08:00

parent 8b95b41555

commit d8f992e9fd

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

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