KVM: x86/pmu: Accept 0 for absent PMU MSRs when host-initiated if !enable_pmu

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Whenever an MSR is part of KVM_GET_MSR_INDEX_LIST, as is the case for
MSR_K7_EVNTSEL0 or MSR_F15H_PERF_CTL0, it has to be always retrievable
and settable with KVM_GET_MSR and KVM_SET_MSR.

Accept a zero value for these MSRs to obey the contract.

Signed-off-by: Like Xu <likexu@tencent.com>
Message-Id: <20220601031925.59693-1-likexu@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Like Xu 2022-06-01 11:19:23 +08:00 • committed by Paolo Bonzini

parent 6ef25aa0a9

commit 8e6a58e28b

2 changed files with 18 additions and 1 deletions

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8

arch/x86/kvm/pmu.c

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11

arch/x86/kvm/svm/pmu.c

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