Re: [PATCH v4] powerpc/pseries/Kconfig: Enable CONFIG_VPA_PMU to be used with KVM

[Amit Machhiwal]

On 2026/06/02 05:47 PM, Gautam Menghani wrote:
> Currently, CONFIG_VPA_PMU is not enabled by default, and consequently
> cannot be used for KVM guests at all, unless explicitly enabled on
> host kernel.
> 
> Mark CONFIG_VPA_PMU as "default m" to ensure it is available when KVM is
> being used.
> 
> Fixes: 176cda0619b6c ("powerpc/perf: Add perf interface to expose vpa counters")
> Cc: stable@xxxxxxxxxxxxxxx # v6.13+
> Suggested-by: Sean Christopherson <seanjc@xxxxxxxxxx>
> Signed-off-by: Gautam Menghani <gautam@xxxxxxxxxxxxx>
> ---
> v3 -> v4:
> 1. Reword the patch description (Harsh)
> 
> v2 -> v3:
> 1. Make CONFIG_VPA_PMU as default m so that it can separately disabled
> (Sean)
> 
> v1 -> v2:
> 1. Rebased on latest master
> 
>  arch/powerpc/platforms/pseries/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig
> index f7052b131a4c..74910ce3a541 100644
> --- a/arch/powerpc/platforms/pseries/Kconfig
> +++ b/arch/powerpc/platforms/pseries/Kconfig
> @@ -154,6 +154,7 @@ config HV_PERF_CTRS
>  config VPA_PMU
>  	tristate "VPA PMU events"
>  	depends on KVM_BOOK3S_64_HV && HV_PERF_CTRS
> +	default m

LGTM.

Reviewed-by: Amit Machhiwal <amachhiw@xxxxxxxxxxxxx>

Thanks,
Amit