linux-kernel - Re: [PATCH v3] x86/resctrl: Preserve CDP enable over cpuhp

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Message-ID: <2030b4e2-bf52-592c-ac67-ddc2aa5f918c@arm.com>
Date:   Fri, 17 Apr 2020 16:33:10 +0100
From:   James Morse <james.morse@....com>
To:     Reinette Chatre <reinette.chatre@...el.com>,
        Borislav Petkov <bp@...en8.de>
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org,
        Thomas Gleixner <tglx@...utronix.de>,
        Fenghua Yu <fenghua.yu@...el.com>,
        Ingo Molnar <mingo@...hat.com>,
        "H . Peter Anvin" <hpa@...or.com>, Babu Moger <Babu.Moger@....com>
Subject: Re: [PATCH v3] x86/resctrl: Preserve CDP enable over cpuhp

Hi guys,

On 17/04/2020 15:57, Reinette Chatre wrote:
> On 4/17/2020 7:18 AM, Borislav Petkov wrote:
>> On Wed, Apr 15, 2020 at 08:57:34AM -0700, Reinette Chatre wrote:
>>> Hi Thomas and Borislav,
>>>
>>> Could you please consider this patch for inclusion as a fix for v5.7?
>>
>> Do you mean by that that I should add
>>
>> Cc: <stable@...r.kernel.org>
>>
>> so that it goes to stable?

Is the CC-stable still required? I've seen a 'Fixes' tag on its own cause patches to get
picked up...


>> The commit in Fixes: is from 4.10-ish times...
>>
> 
> Borislav: Sorry about that and thank you very much for catching this
> omission. Yes, this patch needs to go to stable.

> James: would you be able to do the backports to stable? Please note that
> support for L2 and L3 CDP was added across Linux versions and the
> resctrl files moved around since then so the backport would need some
> changes to address this issue in all versions.

Yes, certainly!


Thanks,

James