Re: [PATCH] sparc64: fix hugetlb for sun4u

[John Paul Adrian Glaubitz]

Hi Anthony,

On Sat, 2025-08-09 at 08:42 +0200, John Paul Adrian Glaubitz wrote:
> Let me know if you have more suggestions to test. I can also provide you with full
> access to this Netra 240 if you send me your public SSH key in a private mail.

I have narrowed it down to a regression between v6.3 and v6.4 now.

The bug can be reproduced with the sparc64_defconfig on a Sun Netra 240 by setting
CONFIG_TRANSPARENT_HUGEPAGE=y and CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y. When testing
on a modern systemd-based distribution, it's also necessary to enable CGroup support
as well as enable support for Sun partition tables with CONFIG_SUN_PARTITION=y.

Then it should be a matter of bisecting the commits between v6.3 and v6.4.

I will do that within the next days as I'm currently a bit busy with other stuff.

Adrian

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