linux-kernel - Re: [PATCH] cpufreq: intel_pstate: Support Emerald Rapids OOB mode

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Message-ID: <CAJZ5v0hugkS3ZtAoqs1OiaxdDvKo3XrmPyHAAoOscQdNUiqHSA@mail.gmail.com>
Date: Fri, 7 Jun 2024 21:20:08 +0200
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
Cc: rafael@...nel.org, viresh.kumar@...aro.org, linux-pm@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] cpufreq: intel_pstate: Support Emerald Rapids OOB mode

On Thu, May 30, 2024 at 7:53 AM Srinivas Pandruvada
<srinivas.pandruvada@...ux.intel.com> wrote:
>
> Prevent intel_pstate to load when OOB (Out Of Band) P-states mode is
> enabled in Emerald Rapids. The OOB identifying bits are same as the
> prior generation CPUs like Sapphire Rapids servers. So, also add Emerald
> Rapids to intel_pstate_cpu_oob_ids list.
>
> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
> ---
>  drivers/cpufreq/intel_pstate.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
> index 4b986c044741..6b6d47d3ec02 100644
> --- a/drivers/cpufreq/intel_pstate.c
> +++ b/drivers/cpufreq/intel_pstate.c
> @@ -2404,6 +2404,7 @@ static const struct x86_cpu_id intel_pstate_cpu_oob_ids[] __initconst = {
>         X86_MATCH(SKYLAKE_X,            core_funcs),
>         X86_MATCH(ICELAKE_X,            core_funcs),
>         X86_MATCH(SAPPHIRERAPIDS_X,     core_funcs),
> +       X86_MATCH(EMERALDRAPIDS_X,      core_funcs),
>         {}
>  };
>  #endif
> --

Rebased on top of the Tony's series:

https://lore.kernel.org/linux-acpi/20240528184720.56259-1-tony.luck@intel.com/

and applied as 6.11 material.

Thanks!