linux-kernel - Re: [PATCH] platform/x86: intel_turbo_max_3: Remove restriction for HWP platforms

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Date:   Wed, 14 Feb 2018 11:29:48 -0800
From:   Arjan van de Ven <arjan@...ux.intel.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
Cc:     Darren Hart <dvhart@...radead.org>,
        Andy Shevchenko <andy@...radead.org>,
        Platform Driver <platform-driver-x86@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] platform/x86: intel_turbo_max_3: Remove restriction for
 HWP platforms

On 2/14/2018 11:29 AM, Andy Shevchenko wrote:
> On Mon, Feb 12, 2018 at 9:50 PM, Srinivas Pandruvada
> <srinivas.pandruvada@...ux.intel.com> wrote:
>> On systems supporting HWP (Hardware P-States) mode, we expected to
>> enumerate core priority via ACPI-CPPC tables. Unfortunately deployment of
>> TURBO 3.0 didn't use this method to show core priority. So users are not
>> able to utilize this feature in HWP mode.
>>
>> So remove the loading restriction of this driver for HWP enabled systems.
>> Even if there are some systems, which are providing the core priority via
>> ACPI CPPC, this shouldn't cause any conflict as the source of priority
>> definition is same.
>>
> 
> Pushed to my review and testing queue, thanks!
> 
> P.S. Should it go to stable?

older stable at least did not have the problem