diff options
Diffstat (limited to 'include/asm-i386/pgtable-3level.h')
| -rw-r--r-- | include/asm-i386/pgtable-3level.h | 69 |
1 files changed, 42 insertions, 27 deletions
diff --git a/include/asm-i386/pgtable-3level.h b/include/asm-i386/pgtable-3level.h index 7a2318f38303..eb0f1d7e96a1 100644 --- a/include/asm-i386/pgtable-3level.h +++ b/include/asm-i386/pgtable-3level.h @@ -42,20 +42,23 @@ static inline int pte_exec_kernel(pte_t pte) return pte_x(pte); } -#ifndef CONFIG_PARAVIRT /* Rules for using set_pte: the pte being assigned *must* be * either not present or in a state where the hardware will * not attempt to update the pte. In places where this is * not possible, use pte_get_and_clear to obtain the old pte * value and then use set_pte to update it. -ben */ -static inline void set_pte(pte_t *ptep, pte_t pte) +static inline void native_set_pte(pte_t *ptep, pte_t pte) { ptep->pte_high = pte.pte_high; smp_wmb(); ptep->pte_low = pte.pte_low; } -#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval) +static inline void native_set_pte_at(struct mm_struct *mm, unsigned long addr, + pte_t *ptep , pte_t pte) +{ + native_set_pte(ptep, pte); +} /* * Since this is only called on user PTEs, and the page fault handler @@ -63,7 +66,8 @@ static inline void set_pte(pte_t *ptep, pte_t pte) * we are justified in merely clearing the PTE present bit, followed * by a set. The ordering here is important. */ -static inline void set_pte_present(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte) +static inline void native_set_pte_present(struct mm_struct *mm, unsigned long addr, + pte_t *ptep, pte_t pte) { ptep->pte_low = 0; smp_wmb(); @@ -72,32 +76,48 @@ static inline void set_pte_present(struct mm_struct *mm, unsigned long addr, pte ptep->pte_low = pte.pte_low; } -#define set_pte_atomic(pteptr,pteval) \ - set_64bit((unsigned long long *)(pteptr),pte_val(pteval)) -#define set_pmd(pmdptr,pmdval) \ - set_64bit((unsigned long long *)(pmdptr),pmd_val(pmdval)) -#define set_pud(pudptr,pudval) \ - (*(pudptr) = (pudval)) +static inline void native_set_pte_atomic(pte_t *ptep, pte_t pte) +{ + set_64bit((unsigned long long *)(ptep),native_pte_val(pte)); +} +static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd) +{ + set_64bit((unsigned long long *)(pmdp),native_pmd_val(pmd)); +} +static inline void native_set_pud(pud_t *pudp, pud_t pud) +{ + *pudp = pud; +} /* * For PTEs and PDEs, we must clear the P-bit first when clearing a page table * entry, so clear the bottom half first and enforce ordering with a compiler * barrier. */ -static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) +static inline void native_pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) { ptep->pte_low = 0; smp_wmb(); ptep->pte_high = 0; } -static inline void pmd_clear(pmd_t *pmd) +static inline void native_pmd_clear(pmd_t *pmd) { u32 *tmp = (u32 *)pmd; *tmp = 0; smp_wmb(); *(tmp + 1) = 0; } + +#ifndef CONFIG_PARAVIRT +#define set_pte(ptep, pte) native_set_pte(ptep, pte) +#define set_pte_at(mm, addr, ptep, pte) native_set_pte_at(mm, addr, ptep, pte) +#define set_pte_present(mm, addr, ptep, pte) native_set_pte_present(mm, addr, ptep, pte) +#define set_pte_atomic(ptep, pte) native_set_pte_atomic(ptep, pte) +#define set_pmd(pmdp, pmd) native_set_pmd(pmdp, pmd) +#define set_pud(pudp, pud) native_set_pud(pudp, pud) +#define pte_clear(mm, addr, ptep) native_pte_clear(mm, addr, ptep) +#define pmd_clear(pmd) native_pmd_clear(pmd) #endif /* @@ -119,7 +139,8 @@ static inline void pud_clear (pud_t * pud) { } #define pmd_offset(pud, address) ((pmd_t *) pud_page(*(pud)) + \ pmd_index(address)) -static inline pte_t raw_ptep_get_and_clear(pte_t *ptep) +#ifdef CONFIG_SMP +static inline pte_t native_ptep_get_and_clear(pte_t *ptep) { pte_t res; @@ -130,6 +151,9 @@ static inline pte_t raw_ptep_get_and_clear(pte_t *ptep) return res; } +#else +#define native_ptep_get_and_clear(xp) native_local_ptep_get_and_clear(xp) +#endif #define __HAVE_ARCH_PTE_SAME static inline int pte_same(pte_t a, pte_t b) @@ -146,28 +170,21 @@ static inline int pte_none(pte_t pte) static inline unsigned long pte_pfn(pte_t pte) { - return (pte.pte_low >> PAGE_SHIFT) | - (pte.pte_high << (32 - PAGE_SHIFT)); + return pte_val(pte) >> PAGE_SHIFT; } extern unsigned long long __supported_pte_mask; static inline pte_t pfn_pte(unsigned long page_nr, pgprot_t pgprot) { - pte_t pte; - - pte.pte_high = (page_nr >> (32 - PAGE_SHIFT)) | \ - (pgprot_val(pgprot) >> 32); - pte.pte_high &= (__supported_pte_mask >> 32); - pte.pte_low = ((page_nr << PAGE_SHIFT) | pgprot_val(pgprot)) & \ - __supported_pte_mask; - return pte; + return __pte((((unsigned long long)page_nr << PAGE_SHIFT) | + pgprot_val(pgprot)) & __supported_pte_mask); } static inline pmd_t pfn_pmd(unsigned long page_nr, pgprot_t pgprot) { - return __pmd((((unsigned long long)page_nr << PAGE_SHIFT) | \ - pgprot_val(pgprot)) & __supported_pte_mask); + return __pmd((((unsigned long long)page_nr << PAGE_SHIFT) | + pgprot_val(pgprot)) & __supported_pte_mask); } /* @@ -187,6 +204,4 @@ static inline pmd_t pfn_pmd(unsigned long page_nr, pgprot_t pgprot) #define __pmd_free_tlb(tlb, x) do { } while (0) -#define vmalloc_sync_all() ((void)0) - #endif /* _I386_PGTABLE_3LEVEL_H */ |