On 04.06.2025 23:32, Bastian Blank wrote:
On Thu, May 29, 2025 at 04:04:43PM +0530, Trupti wrote:
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.
This is a bug in qemu.
Make a 64KB page kernel the default for ppc64el Trixie.
We decided to make 4 KiB the default for all architectures.
https://lore.kernel.org/qemu-devel/aEFwmU8PRo_SxV4T@zatzit/
I definitely don't want to change upstream defaults here.
Maybe qemu upstream can be convinced to change their default
now (in the next version, not in trixie), I dunno.
But I know right to nothing about ppc64 and its page sizes.
Thanks,
/mjt
