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Date: Mon, 11 May 2020 17:13:56 +0200
From: Christoph Hellwig <hch@lst.de>
Subject: Re: sort out the flush_icache_range mess
Message-ID: <20200511151356.GB28634@lst.de>
References: <20200510075510.987823-1-hch@lst.de> <CAMuHMdXazsBw0mjJd0uFHQud7qbb5-Uw-PTDB3+-M=huRWOfgQ@mail.gmail.com>
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Sender: owner-linux-mm@kvack.org
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Christoph Hellwig <hch@lst.de>, Andrew Morton <akpm@linux-foundation.org>, Arnd Bergmann <arnd@arndb.de>, Roman Zippel <zippel@linux-m68k.org>, Linux-Arch <linux-arch@vger.kernel.org>, "open list:TENSILICA XTENSA PORT (xtensa)" <linux-xtensa@linux-xtensa.org>, Michal Simek <monstr@monstr.eu>, Jessica Yu <jeyu@kernel.org>, "linux-ia64@vger.kernel.org" <linux-ia64@vger.kernel.org>, linux-c6x-dev@linux-c6x.org, Linux-sh list <linux-sh@vger.kernel.org>, "open list:QUALCOMM HEXAGON..." <linux-hexagon@vger.kernel.org>, the arch/x86 maintainers <x86@kernel.org>, linux-um <linux-um@lists.infradead.org>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, "open list:BROADCOM NVRAM DRIVER" <linux-mips@vger.kernel.org>, Linux MM <linux-mm@kvack.org>, linux-m68k <linux-m68k@lists.linux-m68k.org>, Openrisc <openrisc@lists.librecores.org>, alpha <linux-alpha@vger.kernel.org>, sparclinux <sparclinux@vger.kernel.org>, Linux FS Devel <linux-fsdevel@vger.kernel.org>, linux-riscv@lists.infradead.org, linuxppc-dev <linuxppc-dev@lists.ozlabs.org>, Linux ARM <linux-arm-kernel@lists.infradead.org>
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On Mon, May 11, 2020 at 09:46:17AM +0200, Geert Uytterhoeven wrote:
> Hi Christoph,
> 
> On Sun, May 10, 2020 at 9:55 AM Christoph Hellwig <hch@lst.de> wrote:
> > none of which really are used by a typical MMU enabled kernel, as a.out can
> > only be build for alpha and m68k to start with.
> 
> Quoting myself:
> "I think it's safe to assume no one still runs a.out binaries on m68k."
> http://lore.kernel.org/r/CAMuHMdW+m0Q+j3rsQdMXnrEPm+XB5Y2AQrxW5sD1mZAKgmEqoA@mail.gmail.com

Do you want to drop the:

    select HAVE_AOUT if MMU

for m68k then?

Note that we'll still need flush_icache_user_range for m68k with mmu,
as it also allows binfmt_flat for mmu configs.