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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2023-09-25 20:31:31 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2023-10-19 08:12:45 +0200 |
| commit | cc68d77febe055b6499dda5fa13bda976a12a85c (patch) | |
| tree | d915b0e823c29908d4da71d901336b695a03c37a /arch/powerpc/include/asm/nohash/pgtable.h | |
| parent | powerpc/nohash: Refactor ptep_test_and_clear_young() (diff) | |
| download | linux-cc68d77febe055b6499dda5fa13bda976a12a85c.tar.xz linux-cc68d77febe055b6499dda5fa13bda976a12a85c.zip | |
powerpc/nohash: Deduplicate ptep_set_wrprotect() and ptep_get_and_clear()
ptep_set_wrprotect() and ptep_get_and_clear are identical for
nohash/32 and nohash/64.
Make them common.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/ffe46edecdabce915e2d1a4b79a3b2ab770f2248.1695659959.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/include/asm/nohash/pgtable.h')
| -rw-r--r-- | arch/powerpc/include/asm/nohash/pgtable.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/nohash/pgtable.h b/arch/powerpc/include/asm/nohash/pgtable.h index 2b043b72f642..7e810a84ac15 100644 --- a/arch/powerpc/include/asm/nohash/pgtable.h +++ b/arch/powerpc/include/asm/nohash/pgtable.h @@ -80,6 +80,22 @@ static inline int ptep_test_and_clear_young(struct vm_area_struct *vma, } #define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG +#ifndef ptep_set_wrprotect +static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, + pte_t *ptep) +{ + pte_update(mm, addr, ptep, _PAGE_RW, 0, 0); +} +#endif +#define __HAVE_ARCH_PTEP_SET_WRPROTECT + +static inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, + pte_t *ptep) +{ + return __pte(pte_update(mm, addr, ptep, ~0UL, 0, 0)); +} +#define __HAVE_ARCH_PTEP_GET_AND_CLEAR + /* Generic accessors to PTE bits */ #ifndef pte_mkwrite_novma static inline pte_t pte_mkwrite_novma(pte_t pte) |