[PATCH v1] KVM: arm64: Use the host kvm_host_data for nr_event_counters

[Fuad Tabba]

On Fri, 23 Oct 2026 at 13:43, Marc Zyngier <maz at kernel.org> wrote:
[...]
> > I tested this in pKVM with a non-protected guest counting with
> > perf_event_open(). On its own the patch doesn't change what the guest
> > sees: every counter, the cycle counter included, still reads 0. That's
> > a separate bug: flush_hyp_vcpu() never copies vcpu->arch.pmu.events to
> > the hyp vCPU, so the guest's events are never enabled on entry. I'll
> > send a fix for that shortly.
>
> Please synchronise with Vincent and sent this as a series fixing PMU
> handling on pKVM, not as discrete patches.
>
> The approach taken for this patch is wrong anyway, so you have plenty
> of opportunity to work together.

Will do.

Cheers,
/fuad
>
> Thanks,
>
>         M.
>
> --
> Without deviation from the norm, progress is not possible.
>