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

[Mike Rapoport]

On Mon, Apr 27, 2026 at 12:45:50PM +0100, Kiryl Shutsemau (Meta) 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>

> ---
>  arch/arm64/include/asm/pgtable-prot.h |  8 ++++----
>  arch/arm64/include/asm/pgtable.h      | 12 ++++++------
>  arch/riscv/include/asm/pgtable-bits.h | 12 ++++++------
>  arch/riscv/include/asm/pgtable.h      | 14 +++++++-------
>  arch/x86/include/asm/pgtable.h        | 24 ++++++++++++------------
>  arch/x86/include/asm/pgtable_types.h  | 16 ++++++++--------
>  6 files changed, 43 insertions(+), 43 deletions(-)

-- 
Sincerely yours,
Mike.