Hi all,
I recently discovered[1] that a bunch of issues on POWER9 go away if I use a 4k page size. Examples:
- Nouveau works with 4k, not with 64k
- WebRTC in Firefox wasn't working consistently with 64k, does work consistently with 4k
- btrfs, which will be Fedora's default filesystem from Fedora 33, is constrained by page size. btrfs filesystems can only be used on systems with the same page size as the system where the filesystem was created with mkfs
These issues are probably more relevant for users of workstations, such as the Talos II and Blackbird from Raptor.
I looked in the kernel configs[2] and I noticed you only do a build with 64k enabled. Would you be willing to support an additional build with 4k, e.g.
CONFIG_PPC_64K_PAGES=n
Thanks for your efforts supporting ppc64
Regards,
Daniel
1. https://forums.raptorcs.com/index.php/topic,200.msg1460.html 2. https://src.fedoraproject.org/rpms/kernel/blob/master/f/kernel-ppc64le-rhel....