On Mon, 06 Jul 2026 19:28:20 +0100,
Oliver Upton [off-list ref] wrote:

On Mon, Jul 06, 2026 at 07:03:23PM +0900, Akihiko Odaki wrote:

quoted

Akihiko Odaki (7):
      KVM: arm64: Disallow vPMU when pPMUs do not cover all CPUs
      KVM: arm64: PMU: Protect the list of PMUs with RCU
      KVM: arm64: PMU: Pass the pPMU to kvm_map_pmu_event()
      KVM: arm64: PMU: Pass the target CPU to kvm_pmu_probe_armpmu()
      KVM: arm64: PMU: Implement fixed-counters-only emulation
      KVM: arm64: PMU: Introduce FIXED_COUNTERS_ONLY
      KVM: arm64: selftests: Test PMU_V3_FIXED_COUNTERS_ONLY

Thanks for respinning the series, I left some comments. I'd really like
to get this feature picked up, hope you have cycles to work on it soon.

FWIW, we're considering adding a new vCPU feature flag to deprecate all
the ugliness of the old PMUv3 UAPI. I'm tempted to say that the
FIXED_COUNTERS_ONLY feature is conditioned on the new feature flag...

It'd be good to have a strawman proposal on the list if we are going
to change add a new API, specially if this is likely to gate new code.

Thanks,

	M.

-- 
Without deviation from the norm, progress is not possible.