linux-kernel - Re: [PATCH v2 0/5] CPPC/amd-pstate: Fixes to limit actions to online CPUs

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Message-ID: <CAJZ5v0jS_uNRz=3ZQQLsChf2V3UUvhf6BZ+MBL0WMv+rcW4H6w@mail.gmail.com>
Date: Fri, 7 Nov 2025 18:41:42 +0100
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: "Gautham R. Shenoy" <gautham.shenoy@....com>
Cc: "Rafael J . Wysocki" <rafael@...nel.org>, Len Brown <lenb@...nel.org>, 
	Mario Limonciello <mario.limonciello@....com>, Yunhui Cui <cuiyunhui@...edance.com>, 
	Jeremy Linton <jeremy.linton@....com>, Viresh Kumar <viresh.kumar@...aro.org>, 
	Ionela Voinescu <ionela.voinescu@....com>, linux-acpi@...r.kernel.org, 
	linux-kernel@...r.kernel.org, Christopher Harris <chris.harris79@...il.com>, 
	linux-pm@...r.kernel.org
Subject: Re: [PATCH v2 0/5] CPPC/amd-pstate: Fixes to limit actions to online CPUs

Hi,

On Fri, Nov 7, 2025 at 8:42 AM Gautham R. Shenoy <gautham.shenoy@....com> wrote:
>
> Hello,
>
> This is the v2 of the patchset to restrict certain actions to only
> online CPUs instead of present CPUs.
>
> The v1 of this patchset can be found here:
> https://lore.kernel.org/lkml/20251105143851.4251-1-gautham.shenoy@amd.com/
>
> Changes between v1 --> v2:
>
>  * Picked up the Reviewed-by tags from Mario for the first four
>    patches
>
>  * Picked up the Tested-by tags from Chris for the first two patches
>
>  * Added a fifth patch to fix calling of cppc_set_auto_sel() for only
>    online CPUs in the amd-pstate driver code (Mario)
>
>
> Gautham R. Shenoy (5):
>   ACPI: CPPC: Detect preferred core availability on online CPUs
>   ACPI: CPPC: Check _CPC validity for only the online CPUs
>   ACPI: CPPC: Perform fast check switch only for online CPUs
>   ACPI: CPPC: Limit perf ctrs in PCC check only to online CPUs

The above 4 patches applied as 6.18-rc material.

>   cpufreq/amd-pstate: Call cppc_set_auto_sel() only for online CPUs

And I'm leaving this one to Mario.

Thanks!