linux-kernel - Re: [PATCH 1/8] powerpc/mm: Make slice specific to book3s/64

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Message-ID: <adefca8d-5fd4-b9ad-dfb8-0cf334440935@csgroup.eu>
Date:   Wed, 24 Nov 2021 13:10:24 +0100
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     kernel test robot <lkp@...el.com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>, alex@...ti.fr
Cc:     kbuild-all@...ts.01.org, linux-mm@...ck.org,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/8] powerpc/mm: Make slice specific to book3s/64



Le 22/11/2021 à 15:48, kernel test robot a écrit :
> Hi Christophe,
> 
> I love your patch! Perhaps something to improve:
> 
> [auto build test WARNING on powerpc/next]
> [also build test WARNING on hnaz-mm/master linus/master v5.16-rc2 next-20211118]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> https://git-scm.com/docs/git-format-patch]
> 
> url:    https://github.com/0day-ci/linux/commits/Christophe-Leroy/Convert-powerpc-to-default-topdown-mmap-layout/20211122-165115
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
> config: powerpc64-randconfig-s031-20211122 (attached as .config)
> compiler: powerpc64-linux-gcc (GCC) 11.2.0
> reproduce:
>          wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>          chmod +x ~/bin/make.cross
>          # apt-get install sparse
>          # sparse version: v0.6.4-dirty
>          # https://github.com/0day-ci/linux/commit/1d0b7cc86d08f25f595b52d8c39ba9ca1d29a30a
>          git remote add linux-review https://github.com/0day-ci/linux
>          git fetch --no-tags linux-review Christophe-Leroy/Convert-powerpc-to-default-topdown-mmap-layout/20211122-165115
>          git checkout 1d0b7cc86d08f25f595b52d8c39ba9ca1d29a30a
>          # save the attached .config to linux build tree
>          COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=powerpc64
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@...el.com>
> 
> All warnings (new ones prefixed by >>):
> 
>     arch/powerpc/mm/book3s64/slice.c: In function 'slice_get_unmapped_area':
>>> arch/powerpc/mm/book3s64/slice.c:639:1: warning: the frame size of 1040 bytes is larger than 1024 bytes [-Wframe-larger-than=]
>       639 | }
>           | ^


The problem was already existing when slice.c was in arch/powerpc/mm/

This patch doesn't introduce the problem.

Christophe