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

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Message-ID: <e762a1c9-b13a-cc8c-e945-292218af418b@intel.com>
Date:   Fri, 17 Apr 2020 07:57:47 -0700
From:   Reinette Chatre <reinette.chatre@...el.com>
To:     Borislav Petkov <bp@...en8.de>, James Morse <james.morse@....com>
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 Borislav and James,

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?
> 
> 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.

Reinette