On Mon, 18 Nov 2024 14:52:05 -0800, Zide Chen wrote:
> The fixed counters may not be contiguous. Intel SDM recommends how to
> use CPUID.0AH to determine if a Fixed Counter is supported:
> FxCtr[i]_is_supported := ECX[i] || (EDX[4:0] > i);
>
> For example, it's perfectly valid to have CPUID.0AH.EDX[4:0] == 3 and
> CPUID.0AH.ECX == 0x77, but checking the fixed counter index against
> CPUID.0AH.EDX[4:0] only, will deem that FxCtr[6:4] are not supported.
>
> [...]
Applied to kvm-x86 next (and now pulled by Paolo), thanks!
[1/3] nVMX: fixed-function performance counters could be not contiguous
https://github.com/kvm-x86/kvm-unit-tests/commit/d5a6cfacc5ba
[2/3] x86/pmu: Fixed PEBS basic record parsing issue
https://github.com/kvm-x86/kvm-unit-tests/commit/1006feddb2b6
[3/3] x86/pmu: Execute PEBS test only if PEBSRecordFormat >= 4
https://github.com/kvm-x86/kvm-unit-tests/commit/e67ba872d947
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https://github.com/kvm-x86/kvm-unit-tests/tree/next
