Re: [PATCH 2/4] powerpc/mm: map shared vmemmap tail pages as read-only

[Lance Yang]

On Mon, Oct 19, 2026 at 05:08:28PM +0800, Muchun Song wrote:
>PowerPC radix uses an architecture-specific vmemmap population path for
>shared tail mappings, so it does not inherit the read-only protection added
>to the common path.
>
>Protect these mappings as well so illegal writes fault instead of
>corrupting metadata shared by multiple tail pages.
>
>Signed-off-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
>---

Nothing jumped out at me, feel free to add:

Reviewed-by: Lance Yang <lance.yang@xxxxxxxxx>