linux-kernel - Re: [PATCH] iomap: remove set_memor

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Message-ID: <20240827162603.1a86804a@canb.auug.org.au>
Date: Tue, 27 Aug 2024 16:26:03 +1000
From: Stephen Rothwell <sfr@...b.auug.org.au>
To: Luis Chamberlain <mcgrof@...nel.org>
Cc: "Darrick J. Wong" <djwong@...nel.org>, brauner@...nel.org,
 p.raghav@...sung.com, dchinner@...hat.com, linux-fsdevel@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-xfs@...r.kernel.org,
 linux-next@...r.kernel.org
Subject: Re: [PATCH] iomap: remove set_memor_ro() on zero page

Hi all,

On Mon, 26 Aug 2024 22:55:39 -0700 "Darrick J. Wong" <djwong@...nel.org> wrote:
>
> On Mon, Aug 26, 2024 at 02:26:32PM -0700, Luis Chamberlain wrote:
> > Stephen reported a boot failure on ppc power8 system where
> > set_memor_ro() on the new zero page failed [0]. Christophe Leroy
> > further clarifies we can't use this on on linear memory on ppc, and
> > so instead of special casing this just for PowerPC [2] remove the
> > call as suggested by Darrick.
> > 
> > [0] https://lore.kernel.org/all/20240826175931.1989f99e@canb.auug.org.au/T/#u
> > [1] https://lore.kernel.org/all/b0fe75b4-c1bb-47f7-a7c3-2534b31c1780@csgroup.eu/
> > [2] https://lore.kernel.org/all/ZszrJkFOpiy5rCma@bombadil.infradead.org/
> > 
> > Reported-by: Stephen Rothwell <sfr@...b.auug.org.au>
> > Suggested-by: "Darrick J. Wong" <djwong@...nel.org>
> > Signed-off-by: Luis Chamberlain <mcgrof@...nel.org>  
> 
> Reviewed-by: Darrick J. Wong <djwong@...nel.org>

I added this to linux-next today, and it seems to have fixed the run
time warning, so

Tested-by: Stephen Rothwell <sfr@...b.auug.org.au>

-- 
Cheers,
Stephen Rothwell

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