diff options
| author | Kiryl Shutsemau (Meta) <kas@kernel.org> | 2026-07-08 12:14:03 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2026-07-22 21:12:32 -0700 |
| commit | e1ce280acf1019cff514e121d0184c4d9c9ddd8e (patch) | |
| tree | 989e0117abbc436ed66158ae262d19245ed7a38f /arch/riscv/include | |
| parent | 039ac85a17368112c8dcf2bcf7f9a004787260f5 (diff) | |
| download | linux-next-e1ce280acf1019cff514e121d0184c4d9c9ddd8e.tar.gz linux-next-e1ce280acf1019cff514e121d0184c4d9c9ddd8e.zip | |
mm: rename uffd-wp PTE bit macros to uffd
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.
Link: https://lore.kernel.org/20260708111417.173443-3-kirill@shutemov.name
Signed-off-by: Kiryl Shutsemau <kas@kernel.org>
Assisted-by: Claude:claude-opus-4-6
Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: SeongJae Park <sj@kernel.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: James Houghton <jthoughton@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Sean Christopherson <seanjc@google.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'arch/riscv/include')
| -rw-r--r-- | arch/riscv/include/asm/pgtable-bits.h | 12 | ||||
| -rw-r--r-- | arch/riscv/include/asm/pgtable.h | 14 |
2 files changed, 13 insertions, 13 deletions
diff --git a/arch/riscv/include/asm/pgtable-bits.h b/arch/riscv/include/asm/pgtable-bits.h index b422d9691e60..d5a86b4df3ce 100644 --- a/arch/riscv/include/asm/pgtable-bits.h +++ b/arch/riscv/include/asm/pgtable-bits.h @@ -40,20 +40,20 @@ #ifdef CONFIG_HAVE_ARCH_USERFAULTFD_WP -/* ext_svrsw60t59b: Bit(60) for uffd-wp tracking */ -#define _PAGE_UFFD_WP \ +/* ext_svrsw60t59b: Bit(60) for userfaultfd tracking */ +#define _PAGE_UFFD \ ((riscv_has_extension_unlikely(RISCV_ISA_EXT_SVRSW60T59B)) ? \ (1UL << 60) : 0) /* * Bit 4 is not involved into swap entry computation, so we - * can borrow it for swap page uffd-wp tracking. + * can borrow it for swap page userfaultfd tracking. */ -#define _PAGE_SWP_UFFD_WP \ +#define _PAGE_SWP_UFFD \ ((riscv_has_extension_unlikely(RISCV_ISA_EXT_SVRSW60T59B)) ? \ _PAGE_USER : 0) #else -#define _PAGE_UFFD_WP 0 -#define _PAGE_SWP_UFFD_WP 0 +#define _PAGE_UFFD 0 +#define _PAGE_SWP_UFFD 0 #endif #define _PAGE_TABLE _PAGE_PRESENT diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h index cbc58ec42752..ae4307cbaed5 100644 --- a/arch/riscv/include/asm/pgtable.h +++ b/arch/riscv/include/asm/pgtable.h @@ -415,32 +415,32 @@ static inline pte_t pte_wrprotect(pte_t pte) static inline bool pte_uffd_wp(pte_t pte) { - return !!(pte_val(pte) & _PAGE_UFFD_WP); + return !!(pte_val(pte) & _PAGE_UFFD); } static inline pte_t pte_mkuffd_wp(pte_t pte) { - return pte_wrprotect(__pte(pte_val(pte) | _PAGE_UFFD_WP)); + return pte_wrprotect(__pte(pte_val(pte) | _PAGE_UFFD)); } static inline pte_t pte_clear_uffd_wp(pte_t pte) { - return __pte(pte_val(pte) & ~(_PAGE_UFFD_WP)); + return __pte(pte_val(pte) & ~(_PAGE_UFFD)); } static inline bool pte_swp_uffd_wp(pte_t pte) { - return !!(pte_val(pte) & _PAGE_SWP_UFFD_WP); + return !!(pte_val(pte) & _PAGE_SWP_UFFD); } static inline pte_t pte_swp_mkuffd_wp(pte_t pte) { - return __pte(pte_val(pte) | _PAGE_SWP_UFFD_WP); + return __pte(pte_val(pte) | _PAGE_SWP_UFFD); } static inline pte_t pte_swp_clear_uffd_wp(pte_t pte) { - return __pte(pte_val(pte) & ~(_PAGE_SWP_UFFD_WP)); + return __pte(pte_val(pte) & ~(_PAGE_SWP_UFFD)); } #endif /* CONFIG_HAVE_ARCH_USERFAULTFD_WP */ @@ -1167,7 +1167,7 @@ static inline pud_t pud_modify(pud_t pud, pgprot_t newprot) * bit 0: _PAGE_PRESENT (zero) * bit 1 to 2: (zero) * bit 3: _PAGE_SWP_SOFT_DIRTY - * bit 4: _PAGE_SWP_UFFD_WP + * bit 4: _PAGE_SWP_UFFD * bit 5: _PAGE_PROT_NONE (zero) * bit 6: exclusive marker * bits 7 to 11: swap type |