KVM: x86/pmu: Add common define to capture fixed counters offset

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Add a common define to "officially" solidify KVM's split of counters,
i.e. to commit to using bits 31:0 to track general purpose counters and
bits 63:32 to track fixed counters (which only Intel supports).  KVM
already bleeds this behavior all over common PMU code, and adding a KVM-
defined macro allows clarifying that the value is a _base_, as oppposed to
the _flag_ that is used to access fixed PMCs via RDPMC (which perf
confusingly calls INTEL_PMC_FIXED_RDPMC_BASE).

No functional change intended.

Link: https://lore.kernel.org/r/20231110022857.1273836-3-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

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This commit is contained in:

Sean Christopherson 2023-11-09 18:28:49 -08:00

parent f933b88e20

commit be6b067dae

3 changed files with 13 additions and 11 deletions

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8

arch/x86/kvm/pmu.c

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4

arch/x86/kvm/pmu.h

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12

arch/x86/kvm/vmx/pmu_intel.c

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