Re: [PATCH v6 2/8] KVM: x86/pmu: Support Intel fixed counter 3 on mediated vPMU

[Jim Mattson]

On Thu, Jul 23, 2026 at 8:36 AM Chen, Zide <zide.chen@xxxxxxxxx> wrote:
>
>
>
> On 7/22/2026 5:17 PM, Jim Mattson wrote:
> > Nit: Should this CPUID.0AH decoding be left to perf? Perhaps struct
> > x86_pmu_capability should include an additional field:
> > num_contiguous_counters_fixed?
>
> This is a temporary workaround that will be removed once non-contiguous
> fixed counter support is added in the vPMU v5 series:
>
> https://lore.kernel.org/kvm/20260707183405.15571-9-zide.chen@xxxxxxxxx/
>
> BTW, the vPMU v5 series is based on top of this Topdown series, so it
> cannot be merged to the Sashiko branch for review. I will post a
> kvm-x86/next based v2 shortly with a new cleanup patch and minor
> changelog/comment fixes.

I am running our internal Sashiko on your vPMU v5 series now. I'll let
you know if it finds any issues.