linux-kernel - Re: [PATCH 00/12] mm: remove __ARCH_HAS_4LEVEL

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Message-ID: <CAHk-=whd6wNfx2bq7BmN4ouZgt=NQ5pw+3uqPOTbvz_Qb3itFg@mail.gmail.com>
Date:   Wed, 23 Oct 2019 06:25:48 -0400
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Mike Rapoport <rppt@...nel.org>
Cc:     Linux-MM <linux-mm@...ck.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Anton Ivanov <anton.ivanov@...bridgegreys.com>,
        Arnd Bergmann <arnd@...db.de>,
        "David S. Miller" <davem@...emloft.net>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Greentime Hu <green.hu@...il.com>,
        Greg Ungerer <gerg@...ux-m68k.org>,
        Helge Deller <deller@....de>,
        "James E.J. Bottomley" <James.Bottomley@...senpartnership.com>,
        Jeff Dike <jdike@...toit.com>,
        "Kirill A. Shutemov" <kirill@...temov.name>,
        Mark Salter <msalter@...hat.com>,
        Matt Turner <mattst88@...il.com>,
        Michal Simek <monstr@...str.eu>,
        Richard Weinberger <richard@....at>,
        Russell King <linux@...linux.org.uk>,
        Sam Creasey <sammy@...my.net>,
        Vincent Chen <deanbo422@...il.com>,
        Vineet Gupta <Vineet.Gupta1@...opsys.com>,
        alpha <linux-alpha@...r.kernel.org>,
        linux-arch <linux-arch@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        linux-c6x-dev@...ux-c6x.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-m68k <linux-m68k@...ts.linux-m68k.org>,
        linux-parisc@...r.kernel.org, linux-um@...ts.infradead.org,
        sparclinux@...r.kernel.org, Mike Rapoport <rppt@...ux.ibm.com>
Subject: Re: [PATCH 00/12] mm: remove __ARCH_HAS_4LEVEL_HACK

On Wed, Oct 23, 2019 at 5:29 AM Mike Rapoport <rppt@...nel.org> wrote:
>
> These patches convert several architectures to use page table folding and
> remove __ARCH_HAS_4LEVEL_HACK along with include/asm-generic/4level-fixup.h.

Thanks for doing this.

The patches look sane from a quick scan, and it's definitely the right
thing to do. So ack on my part, but obviously testing the different
architectures would be a really good thing...

                Linus