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Bug#1106757: ppc64el Trixie: Need default 64KB page kernel or installer option

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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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Bug#1106757: ppc64el Trixie: Need default 64KB page kernel or installer option Cyril Brulebois <kibi@debian.org> - 2025-05-29 16:00 +0200

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