On Tue, 04 Apr 2023 15:17:59 +0800, Like Xu wrote:
> The kvm_pmu_refresh() may be called repeatedly (e.g. configure guest
> CPUID repeatedly or update MSR_IA32_PERF_CAPABILITIES) and each
> call will use the last pmu->all_valid_pmc_idx value, with the residual
> bits introducing additional overhead later in the vPMU emulation.
>
>
Applied to kvm-x86 pmu, thanks!
[1/1] KVM: x86/pmu: Zero out pmu->all_valid_pmc_idx each time it's refreshed
https://github.com/kvm-x86/linux/commit/7e768ce8278b
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https://github.com/kvm-x86/linux/tree/next
https://github.com/kvm-x86/linux/tree/fixes
