[PATCH] Deprecate s390-linux-gnu (31bit)

[Andreas K. Huettel]

Am Dienstag, 16. Dezember 2025, 15:20:29 Mitteleuropäische Normalzeit schrieb Stefan Liebler:
> The next linux 6.19 release will remove support for compat syscalls on s390x with those commits:
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0d79affa31cbee477a45642efc49957d05466307
> 0d79affa31cb Merge branch 'compat-removal'
> 4ac286c4a8d9 s390/syscalls: Switch to generic system call table generation
> f4e1f1b1379d s390/syscalls: Remove system call table pointer from thread_struct
> 3db5cf935471 s390/uapi: Remove 31 bit support from uapi header files
> 8e0b986c59c6 s390: Remove compat support
> 169ebcbb9082 tools: Remove s390 compat support
> 7afb095df3e3 s390/syscalls: Add pt_regs parameter to SYSCALL_DEFINE0() syscall wrapper
> b2da5f6400b4 s390/kvm: Use psw32_t instead of psw_compat_t
> 8c633c78c23a s390/ptrace: Rename psw_t32 to psw32_t
> 
> This patch also removes s390-linux-gnu (31bit) from build-many-glibcs.py.
> Then the next update of syscall numbers for Linux 6.19 won't change
> sysdeps/unix/sysv/linux/s390/s390-32/arch-syscall.h
> ---
>  NEWS                         | 5 +++++
>  scripts/build-many-glibcs.py | 2 --
>  2 files changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/NEWS b/NEWS
> index 6964ca074e..1e0d7864d1 100644
> --- a/NEWS
> +++ b/NEWS
> @@ -77,6 +77,11 @@ Deprecated and removed features, and other changes affecting compatibility:
>  * The support for TX lock elision of pthread mutexes has been removed on all
>    architectures (powerpc, s390x, x86_64).
>  
> +* The next linux 6.19 release will remove support for compat syscalls on s390x.
> +  Therefore the s390-linux-gnu (31bit) configuration is deprecated and will then

is deprecated in the glibc 2.43 release 

> +  be removed with glibc 2.44 release. Note that s390x-linux-gnu (64bit) keeps

remains supported

> +  supported.
> +
>  Changes to build and runtime requirements:
>  
>    [Add changes to build and runtime requirements here]
> diff --git a/scripts/build-many-glibcs.py b/scripts/build-many-glibcs.py
> index 940b66a09a..25551ed038 100755
> --- a/scripts/build-many-glibcs.py
> +++ b/scripts/build-many-glibcs.py
> @@ -439,8 +439,6 @@ class Context(object):
>                                   '--disable-multilib'])
>          self.add_config(arch='s390x',
>                          os_name='linux-gnu',
> -                        glibcs=[{},
> -                                {'arch': 's390', 'ccopts': '-m31'}],
>                          extra_glibcs=[{'variant': 'O3',
>                                         'cflags': '-O3'},
>                                        {'variant': 'zEC12',
> 

Mostly symbolic but anyway, 

Reviewed-by: Andreas K. Huettel <dilfridge@gentoo.org>

-- 
Andreas K. Hüttel
dilfridge@gentoo.org
Gentoo Linux developer
(council, toolchain, base-system, perl, libreoffice)
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