KVM: x86: use the KVM side max supported fixed counter

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KVM vPMU doesn't support to emulate all the fixed counters that the
host PMU driver has supported, e.g. the fixed counter 3 used by
Topdown metrics hasn't been supported by KVM so far.

Rename MAX_FIXED_COUNTERS to KVM_PMC_MAX_FIXED to have a more
straightforward naming convention as INTEL_PMC_MAX_FIXED used by the
host PMU driver, and fix vPMU to use the KVM side KVM_PMC_MAX_FIXED
for the virtual fixed counter emulation, instead of the host side
INTEL_PMC_MAX_FIXED.

Signed-off-by: Wei Wang <wei.w.wang@intel.com>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/1643750603-100733-2-git-send-email-kan.liang@linux.intel.com

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This commit is contained in:

Wei Wang 2022-02-01 13:23:22 -08:00 • committed by Peter Zijlstra

parent 2145e77fec

commit 0144ba0c5b

5 changed files with 7 additions and 7 deletions

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3

arch/x86/include/asm/kvm_host.h

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3

arch/x86/kvm/cpuid.c

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arch/x86/kvm/pmu.h

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4

arch/x86/kvm/vmx/pmu_intel.c

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arch/x86/kvm/x86.c

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