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| author | Like Xu <likexu@tencent.com> | 2022-04-11 18:19:33 +0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-06-08 04:47:47 -0400 |
| commit | bef6ecca46ac938ffb352d7fa2f6eafd1b6a41be (patch) | |
| tree | 1575442eff2ef699248c9de76598ea920703ea7f /tools/perf/scripts/python | |
| parent | 39a4d779546a993c53cea28e659e8edc9f868af0 (diff) | |
| download | kernel-bef6ecca46ac938ffb352d7fa2f6eafd1b6a41be.tar.gz | |
KVM: x86/pmu: Set MSR_IA32_MISC_ENABLE_EMON bit when vPMU is enabled
On Intel platforms, the software can use the IA32_MISC_ENABLE[7] bit to
detect whether the processor supports performance monitoring facility.
It depends on the PMU is enabled for the guest, and a software write
operation to this available bit will be ignored. The proposal to ignore
the toggle in KVM is the way to go and that behavior matches bare metal.
Signed-off-by: Like Xu <likexu@tencent.com>
Message-Id: <20220411101946.20262-5-likexu@tencent.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions