linux-kernel - Re: linux-next: build failure after merge of the mm tree

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Message-ID: <20230307085834.209cce60@canb.auug.org.au>
Date:   Tue, 7 Mar 2023 08:58:34 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Marcelo Tosatti <mtosatti@...hat.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the mm tree

Hi all,

On Mon, 6 Mar 2023 11:52:56 +1100 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> 
> After merging the mm tree, today's linux-next build (sparc64 defconfig)
> failed like this:
> 
> sparc64-linux-ld: mm/vmstat.o: in function `cpu_vm_stats_fold':
> vmstat.c:(.text+0x2a18): undefined reference to `__xchg_called_with_bad_pointer'
> sparc64-linux-ld: vmstat.c:(.text+0x2a98): undefined reference to `__xchg_called_with_bad_pointer'
> 
> Caused by commit
> 
>   676a3befc9ba ("mm/vmstat: use xchg in cpu_vm_stats_fold")
> 
> Sparc does not support xchg() on 8 bit variables.
> 
> I have reverted the above commit (and the 2 following ones) for today.

I have used the supplied patch instead of these reverts today.

-- 
Cheers,
Stephen Rothwell

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