linux-kernel - Re: [PATCH 08/26] m68k: simplify ioremap

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Date:   Mon, 19 Aug 2019 11:18:46 +0200
From:   Christoph Hellwig <hch@....de>
To:     Geert Uytterhoeven <geert@...ux-m68k.org>
Cc:     Christoph Hellwig <hch@....de>, Arnd Bergmann <arnd@...db.de>,
        Guo Ren <guoren@...nel.org>, Michal Simek <monstr@...str.eu>,
        Greentime Hu <green.hu@...il.com>,
        Vincent Chen <deanbo422@...il.com>,
        Guan Xuetao <gxt@....edu.cn>,
        the arch/x86 maintainers <x86@...nel.org>,
        alpha <linux-alpha@...r.kernel.org>,
        arcml <linux-snps-arc@...ts.infradead.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        "open list:QUALCOMM HEXAGON..." <linux-hexagon@...r.kernel.org>,
        "linux-ia64@...r.kernel.org" <linux-ia64@...r.kernel.org>,
        linux-m68k <linux-m68k@...ts.linux-m68k.org>,
        linux-mips@...r.kernel.org, nios2-dev@...ts.rocketboards.org,
        Openrisc <openrisc@...ts.librecores.org>,
        Parisc List <linux-parisc@...r.kernel.org>,
        linux-riscv@...ts.infradead.org,
        linux-s390 <linux-s390@...r.kernel.org>,
        Linux-sh list <linux-sh@...r.kernel.org>,
        sparclinux <sparclinux@...r.kernel.org>,
        linux-xtensa@...ux-xtensa.org,
        MTD Maling List <linux-mtd@...ts.infradead.org>,
        Linux-Arch <linux-arch@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 08/26] m68k: simplify ioremap_nocache

On Mon, Aug 19, 2019 at 10:56:02AM +0200, Geert Uytterhoeven wrote:
> BTW, shouldn't we get rid of the sole user of ioremap_uc(), too?
> Seems to make a difference on x86 only, where it is "strongly uncached"
> (whatever that may mean ;-)

Yes, we probably should.  However that actually seems worth a discussion
so I wanted to defer it until after this already huge series.

Another thing we can do after this series is to kill of ioremap_nocache.