Re: [PATCH 6.11 000/214] 6.11.4-rc1 review

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On 15. 10. 24, 9:05, Naresh Kamboju wrote:
On Mon, 14 Oct 2024 at 19:55, Greg Kroah-Hartman
<gregkh@xxxxxxxxxxxxxxxxxxx> wrote:

This is the start of the stable review cycle for the 6.11.4 release.
There are 214 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 Wed, 16 Oct 2024 14:09:57 +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-6.11.4-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-6.11.y
and the diffstat can be found below.

thanks,

greg k-h

The S390 build broke on the stable-rc linux-6.11.y branch due to
following build warnings / errors.

First seen on v6.11.3-215-ga491a66f8da4
   GOOD: v6.11.3
   BAD: v6.11.3-215-ga491a66f8da4

List of regressions,
* s390, build
   - clang-19-allnoconfig
   - clang-19-defconfig
   - clang-nightly-allnoconfig
   - clang-nightly-defconfig
   - gcc-13-allmodconfig
   - gcc-13-allnoconfig
   - gcc-13-defconfig
   - gcc-13-tinyconfig
   - gcc-8-allnoconfig
   - gcc-8-defconfig-fe40093d
   - gcc-8-tinyconfig

Build log:
-------
   arch/s390/include/asm/cpu_mf.h: Assembler messages:
   arch/s390/include/asm/cpu_mf.h:165: Error: Unrecognized opcode: `lpp'
   make[3]: *** [scripts/Makefile.build:244: arch/s390/boot/startup.o] Error 1

   arch/s390/include/asm/atomic_ops.h: Assembler messages:
   arch/s390/include/asm/atomic_ops.h:83: Error: Unrecognized opcode: `laag'
   arch/s390/include/asm/atomic_ops.h:83: Error: Unrecognized opcode: `laag'
   make[3]: *** [scripts/Makefile.build:244: arch/s390/boot/vmem.o] Error 1

   arch/s390/include/asm/bitops.h: Assembler messages:
   arch/s390/include/asm/bitops.h:308: Error: Unrecognized opcode: `flogr'
   make[3]: *** [scripts/Makefile.build:244:
arch/s390/boot/pgm_check_info.o] Error 1

   arch/s390/include/asm/timex.h: Assembler messages:
   arch/s390/include/asm/timex.h:192: Error: Unrecognized opcode: `stckf'
   arch/s390/include/asm/timex.h:192: Error: Unrecognized opcode: `stckf'
   make[3]: *** [scripts/Makefile.build:244: arch/s390/boot/kaslr.o] Error 1
   make[3]: Target 'arch/s390/boot/bzImage' not remade because of errors.
   make[2]: *** [arch/s390/Makefile:137: bzImage] Error 2

The diff of cflags used for arch/s390/boot:
--- good        2024-10-15 09:13:59.769479783 +0200
+++ bad 2024-10-15 09:13:39.393060183 +0200
@@ -55,10 +55,10 @@
 -Wno
 -array
 -bounds
--march=z196
 -mtune=z13
 -Wa,
 -I/dev/shm/jslaby/linux/arch/s390/include
+-march=z900
 -I/dev/shm/jslaby/linux/arch/s390/boot
 -Iarch/s390/boot
 -DKBUILD_MODFILE='"arch/s390/boot/startup"'




Reverting of this makes it work again:
commit 51ab63c4cc8fbcfee58b8342a35006b45afbbd0d
Refs: v6.11.3-19-g51ab63c4cc8f
Author:     Heiko Carstens <hca@xxxxxxxxxxxxx>
AuthorDate: Wed Sep 4 11:39:27 2024 +0200
Commit:     Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
CommitDate: Mon Oct 14 16:10:09 2024 +0200

    s390/boot: Compile all files with the same march flag

    [ Upstream commit fccb175bc89a0d37e3ff513bb6bf1f73b3a48950 ]


If the above is to be really used in stable (REASONS?), I believe at least these are missing:
ebcc369f1891 s390: Use MARCH_HAS_*_FEATURES defines
697b37371f4a s390: Provide MARCH_HAS_*_FEATURES defines


thanks,
--
js
suse labs





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