linux-kernel - Re: [PATCH 05/26] openrisc: map as uncached in ioremap

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Message-ID: <20190830214512.GX24874@lianli.shorne-pla.net>
Date:   Sat, 31 Aug 2019 06:45:12 +0900
From:   Stafford Horne <shorne@...il.com>
To:     Christoph Hellwig <hch@....de>
Cc:     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>, x86@...nel.org,
        linux-alpha@...r.kernel.org, linux-snps-arc@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-hexagon@...r.kernel.org, linux-ia64@...r.kernel.org,
        linux-m68k@...ts.linux-m68k.org, linux-mips@...r.kernel.org,
        nios2-dev@...ts.rocketboards.org, openrisc@...ts.librecores.org,
        linux-parisc@...r.kernel.org, linux-riscv@...ts.infradead.org,
        linux-s390@...r.kernel.org, linux-sh@...r.kernel.org,
        sparclinux@...r.kernel.org, linux-xtensa@...ux-xtensa.org,
        linux-mtd@...ts.infradead.org, linux-arch@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 05/26] openrisc: map as uncached in ioremap

On Fri, Aug 30, 2019 at 06:07:05PM +0200, Christoph Hellwig wrote:
> On Fri, Aug 23, 2019 at 10:55:39PM +0900, Stafford Horne wrote:
> > On Sat, Aug 17, 2019 at 09:32:32AM +0200, Christoph Hellwig wrote:
> > > Openrisc is the only architecture not mapping ioremap as uncached,
> > > which has been the default since the Linux 2.6.x days.  Switch it
> > > over to implement uncached semantics by default.
> > > 
> > > Signed-off-by: Christoph Hellwig <hch@....de>
> > > ---
> > >  arch/openrisc/include/asm/io.h      | 20 +++-----------------
> > >  arch/openrisc/include/asm/pgtable.h |  2 +-
> > >  arch/openrisc/mm/ioremap.c          |  8 ++++----
> > >  3 files changed, 8 insertions(+), 22 deletions(-)
> > 
> > Acked-by: Stafford Horne <shorne@...il.com>
> 
> Can you send this one to Linus for 5.4?  That would help with the
> possibility to remove ioremap_nocache after that.

Sure, I will pick this up.

-Stafford