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

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Date:   Wed, 11 May 2022 19:18:45 +0200
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
Cc:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Len Brown <lenb@...nel.org>,
        Linux PM <linux-pm@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] cpufreq: intel_pstate: Support Sapphire Rapids OOB mode

On Mon, May 2, 2022 at 10:50 PM Srinivas Pandruvada
<srinivas.pandruvada@...ux.intel.com> wrote:
>
> Prevent intel_pstate to load when OOB (Out Of Band) P-states mode is
> enabled in Sapphire Rapids. The OOB identifying bits are same as the
> prior generation CPUs like Ice Lake servers. So, also add Sapphire
> 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 846bb3a78788..76d59b3f35e4 100644
> --- a/drivers/cpufreq/intel_pstate.c
> +++ b/drivers/cpufreq/intel_pstate.c
> @@ -2424,6 +2424,7 @@ static const struct x86_cpu_id intel_pstate_cpu_oob_ids[] __initconst = {
>         X86_MATCH(BROADWELL_X,          core_funcs),
>         X86_MATCH(SKYLAKE_X,            core_funcs),
>         X86_MATCH(ICELAKE_X,            core_funcs),
> +       X86_MATCH(SAPPHIRERAPIDS_X,     core_funcs),
>         {}
>  };
>
> --

Applied as 5.19 material, thanks!