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Date:   Fri, 8 Sep 2023 15:59:39 +0200
From:   Peter Zijlstra <peterz@infradead.org>
To:     Qais Yousef <qyousef@layalina.io>
Cc:     Ingo Molnar <mingo@kernel.org>,
        "Rafael J. Wysocki" <rafael@kernel.org>,
        Viresh Kumar <viresh.kumar@linaro.org>,
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        linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
        Lukasz Luba <lukasz.luba@arm.com>
Subject: Re: [RFC PATCH 0/7] sched: cpufreq: Remove magic margins
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On Fri, Sep 08, 2023 at 02:33:36PM +0100, Qais Yousef wrote:

> > (even hardware has these things today, we get 0-255 values that do
> > 'something' uarch specific)
> 
> Ah, could I get some pointers please?

Intel HWP.EPP and AMD CPPC EPP I think.. both intel-pstate and
amd-pstate have EPP thingies.