linux-kernel - Re: [PATCH 6.1 000/197] 6.1.79-rc1 review

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Date: Tue, 20 Feb 2024 19:40:36 -0600
From: Daniel Díaz <daniel.diaz@...aro.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org
Cc: patches@...ts.linux.dev, linux-kernel@...r.kernel.org,
 torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
 linux@...ck-us.net, shuah@...nel.org, patches@...nelci.org,
 lkft-triage@...ts.linaro.org, pavel@...x.de, jonathanh@...dia.com,
 f.fainelli@...il.com, sudipm.mukherjee@...il.com, srw@...dewatkins.net,
 rwarsow@....de, conor@...nel.org, allen.lkml@...il.com,
 matthias.schiffer@...tq-group.com
Subject: Re: [PATCH 6.1 000/197] 6.1.79-rc1 review

Hello!

On 20/02/24 7:04 p. m., Daniel Díaz wrote:
> On 20/02/24 2:49 p. m., Greg Kroah-Hartman wrote:
>> This is the start of the stable review cycle for the 6.1.79 release.
>> There are 197 patches in this series, all will be posted as a response
>> to this one.  If anyone has any issues with these being applied, please
>> let me know.
>>
>> Responses should be made by Thu, 22 Feb 2024 20:48:08 +0000.
>> Anything received after that time might be too late.
>>
>> The whole patch series can be found in one patch at:
>>     https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.1.79-rc1.gz
>> or in the git tree and branch at:
>>     git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.1.y
>> and the diffstat can be found below.
>>
>> thanks,
>>
>> greg k-h
> 
> We see a regression with PowerPC:
> 
> -----8<-----
>    /builds/linux/arch/powerpc/kernel/cpu_setup_6xx.S: Assembler messages:
>    /builds/linux/arch/powerpc/kernel/cpu_setup_6xx.S:124: Error: unrecognized opcode: `sym_func_start_local(setup_g2_le_hid2)'
>    /builds/linux/arch/powerpc/kernel/cpu_setup_6xx.S:131: Error: unrecognized opcode: `sym_func_end(setup_g2_le_hid2)'
>    make[4]: *** [/builds/linux/scripts/Makefile.build:382: arch/powerpc/kernel/cpu_setup_6xx.o] Error 1
> ----->8-----
> 
> This is seen only on PowerPC with GCC 8, GCC 13, Clang 17, Clang nightly, on:
> * allnoconfig
> * tinyconfig
> * mpc83xx_defconfig
> * ppc6xx_defconfig
> (at least)
> 
> Reproducer:
> 
>    tuxmake \
>      --runtime podman \
>      --target-arch powerpc \
>      --toolchain gcc-8 \
>      --kconfig tinyconfig
> 

Bisection points to:

   commit a65d7a833f486d0c162fdc854d2d5dd2e66ddd95
   Author: Matthias Schiffer <matthias.schiffer@...tq-group.com>
   Date:   Wed Jan 24 11:38:38 2024 +0100

       powerpc/6xx: set High BAT Enable flag on G2_LE cores
       
       [ Upstream commit a038a3ff8c6582404834852c043dadc73a5b68b4 ]


Reverting that commit makes the build pass again.

Greetings!

Daniel Díaz
daniel.diaz@...aro.org