diff options
Diffstat (limited to 'include/asm-x86/pgtable_64.h')
| -rw-r--r-- | include/asm-x86/pgtable_64.h | 64 |
1 files changed, 35 insertions, 29 deletions
diff --git a/include/asm-x86/pgtable_64.h b/include/asm-x86/pgtable_64.h index 435e17187eb..29fdeb8111b 100644 --- a/include/asm-x86/pgtable_64.h +++ b/include/asm-x86/pgtable_64.h @@ -63,51 +63,59 @@ extern void clear_kernel_mapping(unsigned long addr, unsigned long size); #define pgd_none(x) (!pgd_val(x)) #define pud_none(x) (!pud_val(x)) -static inline void set_pte(pte_t *dst, pte_t val) +struct mm_struct; + +static inline void native_pte_clear(struct mm_struct *mm, unsigned long addr, + pte_t *ptep) { - *dst = val; -} -#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval) + *ptep = native_make_pte(0); +} -static inline void set_pmd(pmd_t *dst, pmd_t val) +static inline void native_set_pte(pte_t *ptep, pte_t pte) { - *dst = val; -} + *ptep = pte; +} -static inline void set_pud(pud_t *dst, pud_t val) +static inline pte_t native_ptep_get_and_clear(pte_t *xp) { - *dst = val; +#ifdef CONFIG_SMP + return native_make_pte(xchg(&xp->pte, 0)); +#else + /* native_local_ptep_get_and_clear, but duplicated because of cyclic dependency */ + pte_t ret = *xp; + native_pte_clear(NULL, 0, xp); + return ret; +#endif } -static inline void pud_clear (pud_t *pud) +static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd) { - set_pud(pud, __pud(0)); + *pmdp = pmd; } -static inline void set_pgd(pgd_t *dst, pgd_t val) +static inline void native_pmd_clear(pmd_t *pmd) { - *dst = val; -} + native_set_pmd(pmd, native_make_pmd(0)); +} -static inline void pgd_clear (pgd_t * pgd) +static inline void native_set_pud(pud_t *pudp, pud_t pud) { - set_pgd(pgd, __pgd(0)); + *pudp = pud; } -#define native_ptep_get_and_clear(xp) __pte(xchg(&(xp)->pte, 0)) +static inline void native_pud_clear(pud_t *pud) +{ + native_set_pud(pud, native_make_pud(0)); +} -struct mm_struct; +static inline void native_set_pgd(pgd_t *pgdp, pgd_t pgd) +{ + *pgdp = pgd; +} -static inline pte_t native_ptep_get_and_clear_full(struct mm_struct *mm, unsigned long addr, pte_t *ptep, int full) +static inline void native_pgd_clear(pgd_t * pgd) { - pte_t pte; - if (full) { - pte = *ptep; - *ptep = __pte(0); - } else { - pte = native_ptep_get_and_clear(ptep); - } - return pte; + native_set_pgd(pgd, native_make_pgd(0)); } #define pte_same(a, b) ((a).pte == (b).pte) @@ -151,7 +159,6 @@ static inline unsigned long pmd_bad(pmd_t pmd) #define pte_none(x) (!pte_val(x)) #define pte_present(x) (pte_val(x) & (_PAGE_PRESENT | _PAGE_PROTNONE)) -#define native_pte_clear(mm,addr,xp) do { set_pte_at(mm, addr, xp, __pte(0)); } while (0) #define pages_to_mb(x) ((x) >> (20-PAGE_SHIFT)) /* FIXME: is this right? */ #define pte_page(x) pfn_to_page(pte_pfn(x)) @@ -196,7 +203,6 @@ static inline unsigned long pmd_bad(pmd_t pmd) pmd_index(address)) #define pmd_none(x) (!pmd_val(x)) #define pmd_present(x) (pmd_val(x) & _PAGE_PRESENT) -#define pmd_clear(xp) do { set_pmd(xp, __pmd(0)); } while (0) #define pfn_pmd(nr,prot) (__pmd(((nr) << PAGE_SHIFT) | pgprot_val(prot))) #define pmd_pfn(x) ((pmd_val(x) & __PHYSICAL_MASK) >> PAGE_SHIFT) |