linux-kernel - Re: [PATCH v2] Subject: x86/PAT: Report PAT on CPUs that support PAT without MTRR

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Message-ID: <485a998b-614f-9749-2064-fea30c17d2a7@suse.com>
Date:   Wed, 13 Jul 2022 17:05:04 +0200
From:   Jan Beulich <jbeulich@...e.com>
To:     Chuck Zmudzinski <brchuckz@...scape.net>
Cc:     Dave Hansen <dave.hansen@...ux.intel.com>,
        Andy Lutomirski <luto@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Tom Lendacky <thomas.lendacky@....com>,
        Jane Chu <jane.chu@...cle.com>,
        Tianyu Lan <Tianyu.Lan@...rosoft.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Sean Christopherson <seanjc@...gle.com>,
        xen-devel@...ts.xenproject.org, stable@...r.kernel.org,
        linux-kernel@...r.kernel.org, Juergen Gross <jgross@...e.com>,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Subject: Re: [PATCH v2] Subject: x86/PAT: Report PAT on CPUs that support PAT
 without MTRR

On 13.07.2022 17:02, Chuck Zmudzinski wrote:
> 5. I have been asked to help backport my fix to all stable branches.

Before anything can sensibly be backported, we need maintainer buyoff on
a patch. And then they may have an opinion how far this is reasonable to
backport.

Jan