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| author | Tobias Huschle <huschle@linux.ibm.com> | 2026-03-06 17:16:30 +0100 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2026-03-13 00:07:47 +0100 |
| commit | cf8771ca4cdbd78232338652b98a7c5c9e0a6184 (patch) | |
| tree | 985e552b95a6f60b4439f7ce5f371756b31a706a /arch/powerpc/include/asm | |
| parent | 11439c4635edd669ae435eec308f4ab8a0804808 (diff) | |
| download | lwn-cf8771ca4cdbd78232338652b98a7c5c9e0a6184.tar.gz lwn-cf8771ca4cdbd78232338652b98a7c5c9e0a6184.zip | |
mm/page_table_check: Pass mm_struct to pxx_user_accessible_page()
Unlike other architectures, s390 does not have means to
distinguish kernel vs user page table entries - neither
an entry itself, nor the address could be used for that.
It is only the mm_struct that indicates whether an entry
in question is mapped to a user space. So pass mm_struct
to pxx_user_accessible_page() callbacks.
[agordeev@linux.ibm.com: rephrased commit message, removed braces]
Acked-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Reviewed-by: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com> #powerpc
Signed-off-by: Tobias Huschle <huschle@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Link: https://lore.kernel.org/r/ca77f3489453c2fe01b25e50e53b778929e0dfc5.1772812343.git.agordeev@linux.ibm.com
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/powerpc/include/asm')
| -rw-r--r-- | arch/powerpc/include/asm/book3s/32/pgtable.h | 2 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/book3s/64/pgtable.h | 10 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/nohash/pgtable.h | 2 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/pgtable.h | 4 |
4 files changed, 9 insertions, 9 deletions
diff --git a/arch/powerpc/include/asm/book3s/32/pgtable.h b/arch/powerpc/include/asm/book3s/32/pgtable.h index 001e28f9eabc..75195bb44d06 100644 --- a/arch/powerpc/include/asm/book3s/32/pgtable.h +++ b/arch/powerpc/include/asm/book3s/32/pgtable.h @@ -438,7 +438,7 @@ static inline bool pte_access_permitted(pte_t pte, bool write) return true; } -static inline bool pte_user_accessible_page(pte_t pte, unsigned long addr) +static inline bool pte_user_accessible_page(struct mm_struct *mm, unsigned long addr, pte_t pte) { return pte_present(pte) && !is_kernel_addr(addr); } diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h index 1a91762b455d..a56df313b585 100644 --- a/arch/powerpc/include/asm/book3s/64/pgtable.h +++ b/arch/powerpc/include/asm/book3s/64/pgtable.h @@ -549,7 +549,7 @@ static inline bool pte_access_permitted(pte_t pte, bool write) return arch_pte_access_permitted(pte_val(pte), write, 0); } -static inline bool pte_user_accessible_page(pte_t pte, unsigned long addr) +static inline bool pte_user_accessible_page(struct mm_struct *mm, unsigned long addr, pte_t pte) { return pte_present(pte) && pte_user(pte); } @@ -925,9 +925,9 @@ static inline bool pud_access_permitted(pud_t pud, bool write) } #define pud_user_accessible_page pud_user_accessible_page -static inline bool pud_user_accessible_page(pud_t pud, unsigned long addr) +static inline bool pud_user_accessible_page(struct mm_struct *mm, unsigned long addr, pud_t pud) { - return pud_leaf(pud) && pte_user_accessible_page(pud_pte(pud), addr); + return pud_leaf(pud) && pte_user_accessible_page(mm, addr, pud_pte(pud)); } #define __p4d_raw(x) ((p4d_t) { __pgd_raw(x) }) @@ -1096,9 +1096,9 @@ static inline bool pmd_access_permitted(pmd_t pmd, bool write) } #define pmd_user_accessible_page pmd_user_accessible_page -static inline bool pmd_user_accessible_page(pmd_t pmd, unsigned long addr) +static inline bool pmd_user_accessible_page(struct mm_struct *mm, unsigned long addr, pmd_t pmd) { - return pmd_leaf(pmd) && pte_user_accessible_page(pmd_pte(pmd), addr); + return pmd_leaf(pmd) && pte_user_accessible_page(mm, addr, pmd_pte(pmd)); } #ifdef CONFIG_TRANSPARENT_HUGEPAGE diff --git a/arch/powerpc/include/asm/nohash/pgtable.h b/arch/powerpc/include/asm/nohash/pgtable.h index e6da5eaccff6..0665d0abe89f 100644 --- a/arch/powerpc/include/asm/nohash/pgtable.h +++ b/arch/powerpc/include/asm/nohash/pgtable.h @@ -249,7 +249,7 @@ static inline bool pte_access_permitted(pte_t pte, bool write) return true; } -static inline bool pte_user_accessible_page(pte_t pte, unsigned long addr) +static inline bool pte_user_accessible_page(struct mm_struct *mm, unsigned long addr, pte_t pte) { return pte_present(pte) && !is_kernel_addr(addr); } diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h index dcd3a88caaf6..29ed509cd235 100644 --- a/arch/powerpc/include/asm/pgtable.h +++ b/arch/powerpc/include/asm/pgtable.h @@ -205,11 +205,11 @@ static inline bool arch_supports_memmap_on_memory(unsigned long vmemmap_size) #endif /* CONFIG_PPC64 */ #ifndef pmd_user_accessible_page -#define pmd_user_accessible_page(pmd, addr) false +#define pmd_user_accessible_page(mm, addr, pmd) false #endif #ifndef pud_user_accessible_page -#define pud_user_accessible_page(pud, addr) false +#define pud_user_accessible_page(mm, addr, pud) false #endif #endif /* __ASSEMBLER__ */ |
