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| author | Mauro Carvalho Chehab <mchehab@infradead.org> | 2008-07-27 12:25:57 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2008-07-27 12:25:57 -0300 |
| commit | 50cb993ea6cd187bfed085cb3e0747066edeb02f (patch) | |
| tree | 61edac62c6c5bc07c59e4369c50c6821ad77f2c0 /include/asm-x86/pgtable.h | |
| parent | 445c2714cf72817ab1ad3ca894c6d9b2047b3a3e (diff) | |
| parent | 8be1a6d6c77ab4532e4476fdb8177030ef48b52c (diff) | |
Merge ../linux-2.6
Diffstat (limited to 'include/asm-x86/pgtable.h')
| -rw-r--r-- | include/asm-x86/pgtable.h | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/include/asm-x86/pgtable.h b/include/asm-x86/pgtable.h index 3e5dbc4195f..04caa2f544d 100644 --- a/include/asm-x86/pgtable.h +++ b/include/asm-x86/pgtable.h @@ -18,6 +18,7 @@ #define _PAGE_BIT_UNUSED2 10 #define _PAGE_BIT_UNUSED3 11 #define _PAGE_BIT_PAT_LARGE 12 /* On 2MB or 1GB pages */ +#define _PAGE_BIT_SPECIAL _PAGE_BIT_UNUSED1 #define _PAGE_BIT_NX 63 /* No execute: only valid after cpuid check */ #define _PAGE_PRESENT (_AT(pteval_t, 1) << _PAGE_BIT_PRESENT) @@ -34,6 +35,8 @@ #define _PAGE_UNUSED3 (_AT(pteval_t, 1) << _PAGE_BIT_UNUSED3) #define _PAGE_PAT (_AT(pteval_t, 1) << _PAGE_BIT_PAT) #define _PAGE_PAT_LARGE (_AT(pteval_t, 1) << _PAGE_BIT_PAT_LARGE) +#define _PAGE_SPECIAL (_AT(pteval_t, 1) << _PAGE_BIT_SPECIAL) +#define __HAVE_ARCH_PTE_SPECIAL #if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE) #define _PAGE_NX (_AT(pteval_t, 1) << _PAGE_BIT_NX) @@ -54,7 +57,7 @@ /* Set of bits not changed in pte_modify */ #define _PAGE_CHG_MASK (PTE_PFN_MASK | _PAGE_PCD | _PAGE_PWT | \ - _PAGE_ACCESSED | _PAGE_DIRTY) + _PAGE_SPECIAL | _PAGE_ACCESSED | _PAGE_DIRTY) #define _PAGE_CACHE_MASK (_PAGE_PCD | _PAGE_PWT) #define _PAGE_CACHE_WB (0) @@ -180,7 +183,7 @@ static inline int pte_exec(pte_t pte) static inline int pte_special(pte_t pte) { - return 0; + return pte_val(pte) & _PAGE_SPECIAL; } static inline int pmd_large(pmd_t pte) @@ -246,7 +249,7 @@ static inline pte_t pte_clrglobal(pte_t pte) static inline pte_t pte_mkspecial(pte_t pte) { - return pte; + return __pte(pte_val(pte) | _PAGE_SPECIAL); } extern pteval_t __supported_pte_mask; |