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| author |   Nanyong Sun <sunnanyong@huawei.com> | 2021-04-30 16:28:47 +0800 |
|---|---|---|
| committer |   Palmer Dabbelt <palmerdabbelt@google.com> | 2021-05-22 10:19:29 -0700 |
| commit | f5397c3ee0a3e2ca0a6d66d079ffcd5386b45b81 (patch) | |
| tree | 8372806f05bfd2b3cca7a2eef002302e0c3f04c8 /arch/riscv/include/asm/pgtable.h | |
| parent | Linux 5.13-rc1 (diff) | |
| download | linux-dev-f5397c3ee0a3e2ca0a6d66d079ffcd5386b45b81.tar.xz linux-dev-f5397c3ee0a3e2ca0a6d66d079ffcd5386b45b81.zip | |
riscv: mm: add _PAGE_LEAF macro
In riscv, a page table entry is leaf when any bit of read, write,
or execute bit is set. So add a macro:_PAGE_LEAF instead of
(_PAGE_READ | _PAGE_WRITE | _PAGE_EXEC), which is frequently used
to determine if it is a leaf page. This make code easier to read,
without any functional change.
Signed-off-by: Nanyong Sun <sunnanyong@huawei.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Diffstat (limited to 'arch/riscv/include/asm/pgtable.h')
| -rw-r--r-- | arch/riscv/include/asm/pgtable.h | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h index 9469f464e71a..dbced7d37768 100644 --- a/arch/riscv/include/asm/pgtable.h +++ b/arch/riscv/include/asm/pgtable.h @@ -190,8 +190,7 @@ static inline int pmd_bad(pmd_t pmd) #define pmd_leaf pmd_leaf static inline int pmd_leaf(pmd_t pmd) { - return pmd_present(pmd) && - (pmd_val(pmd) & (_PAGE_READ | _PAGE_WRITE | _PAGE_EXEC)); + return pmd_present(pmd) && (pmd_val(pmd) & _PAGE_LEAF); } static inline void set_pmd(pmd_t *pmdp, pmd_t pmd) @@ -267,8 +266,7 @@ static inline int pte_exec(pte_t pte) static inline int pte_huge(pte_t pte) { - return pte_present(pte) - && (pte_val(pte) & (_PAGE_READ | _PAGE_WRITE | _PAGE_EXEC)); + return pte_present(pte) && (pte_val(pte) & _PAGE_LEAF); } static inline int pte_dirty(pte_t pte) |