linux-kernel - Re: [RFC, PATCHv1 00/28] 5-level paging

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Message-ID: <6D8D56F4-6056-4533-BCFE-5FE292195D34@zytor.com>
Date:   Thu, 08 Dec 2016 10:26:38 -0800
From:   hpa@...or.com
To:     Linus Torvalds <torvalds@...ux-foundation.org>,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
CC:     Andrew Morton <akpm@...ux-foundation.org>,
        the arch/x86 maintainers <x86@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Arnd Bergmann <arnd@...db.de>,
        Andi Kleen <ak@...ux.intel.com>,
        Dave Hansen <dave.hansen@...el.com>,
        Andy Lutomirski <luto@...capital.net>,
        "linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>,
        linux-mm <linux-mm@...ck.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [RFC, PATCHv1 00/28] 5-level paging

On December 8, 2016 10:16:07 AM PST, Linus Torvalds <torvalds@...ux-foundation.org> wrote:
>On Thu, Dec 8, 2016 at 8:21 AM, Kirill A. Shutemov
><kirill.shutemov@...ux.intel.com> wrote:
>>
>> This patchset is still very early. There are a number of things
>missing
>> that we have to do before asking anyone to merge it (listed below).
>> It would be great if folks can start testing applications now (in
>QEMU) to
>> look for breakage.
>> Any early comments on the design or the patches would be appreciated
>as
>> well.
>
>Looks ok to me. Starting off with a compile-time config option seems
>fine.
>
>I do think that the x86 cpuid part should (patch 15) should be the
>first patch, so that we see "la57" as a capability in /proc/cpuinfo
>whether it's being enabled or not? We should merge that part
>regardless of any mm patches, I think.
>
>               Linus

Definitely.
-- 
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