linux-kernel - Re: [PATCH] cpufreq: intel_pstate: Support Granite Rapids and Sierra Forest OOB mode

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Message-ID: <CAJZ5v0gkJdSdM+282AWTDKPdRsvJLiXi5p1bq+L+=_weCqOdzg@mail.gmail.com>
Date: Mon, 19 Aug 2024 15:40:29 +0200
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
Cc: viresh.kumar@...aro.org, linux-pm@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] cpufreq: intel_pstate: Support Granite Rapids and Sierra
 Forest OOB mode

On Fri, Aug 2, 2024 at 8:49 PM Srinivas Pandruvada
<srinivas.pandruvada@...ux.intel.com> wrote:
>
> Prevent intel_pstate from loading when OOB (Out Of Band) P-states mode is
> enabled.
>
> The OOB identifying bits are same as for the prior generation CPUs like
> Emerald Rapids servers. Add Granite Rapids and Sierra Forest CPU models to
> intel_pstate_cpu_oob_ids[].
>
> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
> ---
>  drivers/cpufreq/intel_pstate.c | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
> index 392a8000b238..79b9c3c27dff 100644
> --- a/drivers/cpufreq/intel_pstate.c
> +++ b/drivers/cpufreq/intel_pstate.c
> @@ -2425,6 +2425,10 @@ static const struct x86_cpu_id intel_pstate_cpu_oob_ids[] __initconst = {
>         X86_MATCH(INTEL_ICELAKE_X,              core_funcs),
>         X86_MATCH(INTEL_SAPPHIRERAPIDS_X,       core_funcs),
>         X86_MATCH(INTEL_EMERALDRAPIDS_X,        core_funcs),
> +       X86_MATCH(INTEL_GRANITERAPIDS_D,        core_funcs),
> +       X86_MATCH(INTEL_GRANITERAPIDS_X,        core_funcs),
> +       X86_MATCH(INTEL_ATOM_CRESTMONT,         core_funcs),
> +       X86_MATCH(INTEL_ATOM_CRESTMONT_X,       core_funcs),
>         {}
>  };
>  #endif
> --

Applied as 6.12 material, thanks!