ACK: [SRU][J/N/P][PATCH 0/2] [UBUNTU 22.04] kernel: Fix z17 elf platform recognition (LP: #2114450)

[Stewart Hore]

On Mon, Jun 16, 2025 at 04:48:33PM +0200, Massimiliano Pellizzer wrote:
> BugLink: https://bugs.launchpad.net/bugs/2114450
>
> [ Impact ]
>
> Glibc arch level is not recognized correctly on IBM z17 instances.
>
> Add detection for machine types 0x9175 and 0x9176 and set ELF platform
> name to z17.
>
> [ Fix ]
>
> Backport the following commit from upstream:
> - 8231a0e63240 s390: Add z17 elf platform
>
> [ Test Plan ]
>
> Boot on a z17 instance and execute:
> $ LD_SHOW_AUXV=1 id | grep AT_PLATFORM
>
> This must return z17.
>
> [ Where Problems Could Occur ]
>
> The fix just adds some cases on a switch statement,
> the regression potential therefore is really low.
>
> [ Other Info ]
>
> Since Jammy was missing support also for z16 I added commit 6203ac30297847 as well.

Acked-by: Stewart Hore <stewart.hore at canonical.com>

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