diff options
| author | Jeremy Fitzhardinge <jeremy@goop.org> | 2008-01-30 13:32:56 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-01-30 13:32:56 +0100 |
| commit | 4614139c6a74fe02c85f702ba9c0e57f8e38647e (patch) | |
| tree | c5d2145a98ecdd5d275ee278c2fbc3d3c8bee8e1 /include/asm-x86/pgtable.h | |
| parent | e8a4852453c5af27d2a9c606e76809afa3dedb64 (diff) | |
x86/pgtable: unify pagetable accessors, #6
Unify functions to test and set bits in pagetable entries.
NOP: only moves existing code around, without any change to it.
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/asm-x86/pgtable.h')
| -rw-r--r-- | include/asm-x86/pgtable.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/include/asm-x86/pgtable.h b/include/asm-x86/pgtable.h index 73e2b47c055e..4c03ff2246fd 100644 --- a/include/asm-x86/pgtable.h +++ b/include/asm-x86/pgtable.h @@ -115,6 +115,34 @@ extern unsigned long long __PAGE_KERNEL, __PAGE_KERNEL_EXEC; #define __S110 PAGE_SHARED_EXEC #define __S111 PAGE_SHARED_EXEC +#ifndef __ASSEMBLY__ +/* + * The following only work if pte_present() is true. + * Undefined behaviour if not.. + */ +static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_DIRTY; } +static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; } +static inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_RW; } +static inline int pte_file(pte_t pte) { return pte_val(pte) & _PAGE_FILE; } +static inline int pte_huge(pte_t pte) { return pte_val(pte) & _PAGE_PSE; } + +static inline int pmd_large(pmd_t pte) { + return (pmd_val(pte) & (_PAGE_PSE|_PAGE_PRESENT)) == + (_PAGE_PSE|_PAGE_PRESENT); +} + +static inline pte_t pte_mkclean(pte_t pte) { return __pte(pte_val(pte) & ~_PAGE_DIRTY); } +static inline pte_t pte_mkold(pte_t pte) { return __pte(pte_val(pte) & ~_PAGE_ACCESSED); } +static inline pte_t pte_wrprotect(pte_t pte) { return __pte(pte_val(pte) & ~_PAGE_RW); } +static inline pte_t pte_mkexec(pte_t pte) { return __pte(pte_val(pte) & ~_PAGE_NX); } +static inline pte_t pte_mkdirty(pte_t pte) { return __pte(pte_val(pte) | _PAGE_DIRTY); } +static inline pte_t pte_mkyoung(pte_t pte) { return __pte(pte_val(pte) | _PAGE_ACCESSED); } +static inline pte_t pte_mkwrite(pte_t pte) { return __pte(pte_val(pte) | _PAGE_RW); } +static inline pte_t pte_mkhuge(pte_t pte) { return __pte(pte_val(pte) | _PAGE_PSE); } +static inline pte_t pte_clrhuge(pte_t pte) { return __pte(pte_val(pte) & ~_PAGE_PSE); } + +#endif /* __ASSEMBLY__ */ + #ifdef CONFIG_X86_32 # include "pgtable_32.h" #else |