> On Oct 10, 2026, at 15:57, Muchun Song <[email protected]> wrote:
>
> The common vmemmap path selects the shared page for optimized mappings
> itself, so Device DAX no longer needs vmemmap_populate_compound_pages()
> to find a shared tail page and pass its backing PFN through the generic
> population helpers.
>
> Remove the Device DAX-specific population path and let section memmap
> population always use vmemmap_populate(). The powerpc retains an
> architecture-specific compound-page implementation, so select it directly
> from radix__vmemmap_populate() for optimizable sections.
Regarding the issue mentioned by Sashiko [1], it does exist, but it
was not introduced by this series. I have already fixed it in another
series [2], but it has not been merged yet.
[1]
https://sashiko.dev/#/patchset/20261010075755.83339-1-songmuchun%40bytedance.com?part=3
[2]
https://lore.kernel.org/all/[email protected]/
Thanks.
