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Date:   Thu, 15 Jul 2021 19:22:00 +0800
From:   Gao Xiang <hsiangkao@linux.alibaba.com>
To:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc:     stable <stable@vger.kernel.org>, kernel test robot <lkp@intel.com>
Subject: Re: [PATCH 5.4.y stable only] MIPS: fix "mipsel-linux-ld:
 decompress.c:undefined reference to `memmove'"
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 <YPATcUXGydBlQ+BK@kroah.com>
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Hi Greg,

On Thu, Jul 15, 2021 at 12:52:33PM +0200, Greg Kroah-Hartman wrote:
> On Fri, Jul 09, 2021 at 09:24:08PM +0800, Gao Xiang wrote:
> > commit a510b616131f85215ba156ed67e5ed1c0701f80f upstream.
> 
> That is not what this commit id is :(
> 
> Please fix this up and be more careful.

That's the exact commit, the original upstream commit was named as
"MIPS: Add support for ZSTD-compressed kernels", which contains the
memmove() definition so the upstream / 5.10 LTS kernel is fine.

But for 5.4 LTS, we shouldn't backport the whole patch since only
memmove() part is needed in order to fix the build regression...

Thanks,
Gao Xiang

> 
> thanks,
> 
> greg k-h