Re: [PATCH v1 0/1] s390: Deprecate s390 32-bit target "s390-*"

[Jan Beulich <jbeulich@suse.com>]

On 13.04.2026 13:40, Jens Remus wrote:
> Linux Kernel 6.19 removed s390 32-bit compatibility support. [1]
> Glibc 2.43 deprecated s390 32-bit [2] and will remove it with
> Glibc 2.44 [3].  GCC 16 will deprecate s390 32-bit (compiler option
> -m31) with the intent to remove it in a future release. [4]
> 
> This deprecates s390 32-bit (target "s390-*" and format "elf32-s390")
> in the upcoming Binutils release with the intent to remove it in a
> future release.
> 
> s390 32-bit deprecation/removal overview:
> - Linux Kernel 6.19 (February 2026) removed s390 32-bit compat
> - Glibc 2.43 (January 2026) deprecated s390 32-bit
> - GCC 16 (expected April 2026) will deprecate s390 32-bit
> - Glibc 2.44 (expected August 2026) will remove s390 32-bit
> - Binutils 2.47 (expected August 2026) would deprecate s390 32-bit
> - Binutils 2.48 (expected February 2027) would remove s390 32-bit
> - GCC 17 (expected April 2027) would remove s390 32-bit
> 
> Removal of s390 32-bit support in Binutils could also be deferred to
> Binutils 2.49 (expected August 2027) if that would be preferable, so
> that Binutils removes it after GCC.

When we discussed merely deprecation (not removal) of Xeon Phi support
on x86, we decided to wait with that until the last gcc version
supporting it went out of support. Maybe best to follow a similar time
line here, at least for the "removal" part.

Jan