Re: [PATCH 5.15 000/160] 5.15.187-rc1 review

[Florian Fainelli <f.fainelli@gmail.com>]

On 7/8/25 09:20, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.15.187 release.
> There are 160 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, 10 Jul 2025 16:22:09 +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/v5.x/stable-review/patch-5.15.187-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-5.15.y
> and the diffstat can be found below.
> 
> thanks,
> 
> greg k-h

The ARM 32-bit kernel fails to build with:

/local/users/fainelli/buildroot/output/arm/host/bin/arm-linux-ld: 
drivers/base/cpu.o: in function `.LANCHOR2':
cpu.c:(.data+0xbc): undefined reference to `cpu_show_tsa'
host-make[2]: *** [Makefile:1246: vmlinux] Error 1

This is caused by:

commit 5799df885785024821d09c334612c00992aa4c4b
Author: Borislav Petkov (AMD) <bp@alien8.de>
Date:   Wed Sep 11 10:53:08 2024 +0200

     x86/bugs: Add a Transient Scheduler Attacks mitigation

     Commit d8010d4ba43e9f790925375a7de100604a5e2dba upstream.

     Add the required features detection glue to bugs.c et all in order to
     support the TSA mitigation.

     Co-developed-by: Kim Phillips <kim.phillips@amd.com>
     Signed-off-by: Kim Phillips <kim.phillips@amd.com>
     Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
     Reviewed-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
     Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

I don't see this in Linus' tree but it's not clear yet why that is not 
happening there.
-- 
Florian