KVM: x86/pmu: Advertise PERFCTR_CORE iff the min nr of counters is met

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Enable and advertise PERFCTR_CORE if and only if the minimum number of
required counters are available, i.e. if perf says there are less than six
general purpose counters.

Opportunistically, use kvm_cpu_cap_check_and_set() instead of open coding
the check for host support.

Suggested-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Like Xu <likexu@tencent.com>
[sean: massage shortlog and changelog]
Link: https://lore.kernel.org/r/20230603011058.1038821-9-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

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Like Xu 2023-06-02 18:10:54 -07:00 • committed by Sean Christopherson

parent 6a08083f29

commit d338d8789e

1 changed files with 12 additions and 3 deletions

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arch/x86/kvm/svm/svm.c

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