XPost: linux.debian.bugs.dist, linux.debian.maint.boot
From: kibi@debian.org

Hi,

Looping in the kernel team.

Trupti <trupti@linux.ibm.com> (2025-05-29):

Testing with the debian-testing-ppc64el-DVD-1.iso confirms that Debian
Trixie on ppc64el currently installs a 4KB page kernel by default. This default (ref: #1074217) causes issues, especially for KVM virtualization (e.g., "Can't support 64 kiB guest pages with 4 kiB host pages"), hindering common ppc64el use cases. Debian Trixie should offer easier access to a 64KB page size kernel.

While 64KB kernel variants, such as those provided by the linux-image-powerpc64le-64k meta-package, are available in the Trixie archive, their manual installation post-setup is inconvenient.

Request:

Make a 64KB page kernel the default for ppc64el Trixie.

My reading of debian/config/ppc64el/defines.toml in kernel-team/linux.git suggests they are responsible for setting up the default, not d-i.

OR

Add a clear installer option to select a 64KB page kernel.

I believe this should be offered in expert mode, have you tried that?

This would improve usability for ppc64el users needing 64KB pages for performance or virtualization.

Cheers,
--
Cyril Brulebois (kibi@debian.org) <https://debamax.com/>
D-I release manager -- Release team member -- Freelance Consultant

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