Re: [PATCH v2 02/14] mm: rename uffd-wp PTE bit macros to uffd

[SeongJae Park]

On Fri,  8 May 2026 16:55:14 +0100 "Kiryl Shutsemau (Meta)" <kas@xxxxxxxxxx> wrote:

> The uffd-wp PTE bit is about to gain a second consumer: userfaultfd
> RWP will use the same bit to mark access-tracking PTEs, distinct
> from mprotect(PROT_NONE) or NUMA-hinting PTEs. WP vs RWP semantics
> come from the VMA flag; the bit is just "uffd has claimed this
> entry." Drop the "_wp" suffix from the arch-private bit macros so
> they reflect that.
> 
>   x86:   _PAGE_BIT_UFFD_WP  -> _PAGE_BIT_UFFD
>          _PAGE_UFFD_WP      -> _PAGE_UFFD
>          _PAGE_SWP_UFFD_WP  -> _PAGE_SWP_UFFD
>   arm64: PTE_UFFD_WP        -> PTE_UFFD
>          PTE_SWP_UFFD_WP    -> PTE_SWP_UFFD
>   riscv: _PAGE_UFFD_WP      -> _PAGE_UFFD
>          _PAGE_SWP_UFFD_WP  -> _PAGE_SWP_UFFD
> 
> Pure mechanical rename -- no behavior change.
> 
> Signed-off-by: Kiryl Shutsemau <kas@xxxxxxxxxx>
> Assisted-by: Claude:claude-opus-4-6
> Reviewed-by: Mike Rapoport (Microsoft) <rppt@xxxxxxxxxx>

Reviewed-by: SeongJae Park <sj@xxxxxxxxxx>


Thanks,
SJ

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