diff options
Diffstat (limited to 'arch/sparc/include/asm/pgtable_32.h')
| -rw-r--r-- | arch/sparc/include/asm/pgtable_32.h | 31 |
1 files changed, 25 insertions, 6 deletions
diff --git a/arch/sparc/include/asm/pgtable_32.h b/arch/sparc/include/asm/pgtable_32.h index 144ab311c52a..1c31ef180b1a 100644 --- a/arch/sparc/include/asm/pgtable_32.h +++ b/arch/sparc/include/asm/pgtable_32.h @@ -134,12 +134,20 @@ static inline void srmmu_set_pte(pte_t *ptep, pte_t pteval) srmmu_swap((unsigned long *)ptep, pte_val(pteval)); } -/* - */ -BTFIXUPDEF_CALL_CONST(struct page *, pmd_page, pmd_t) +static inline int srmmu_device_memory(unsigned long x) +{ + return ((x & 0xF0000000) != 0); +} + +static inline struct page *pmd_page(pmd_t pmd) +{ + if (srmmu_device_memory(pmd_val(pmd))) + BUG(); + return pfn_to_page((pmd_val(pmd) & SRMMU_PTD_PMASK) >> (PAGE_SHIFT-4)); +} + BTFIXUPDEF_CALL_CONST(unsigned long, pgd_page_vaddr, pgd_t) -#define pmd_page(pmd) BTFIXUP_CALL(pmd_page)(pmd) #define pgd_page_vaddr(pgd) BTFIXUP_CALL(pgd_page_vaddr)(pgd) BTFIXUPDEF_CALL_CONST(int, pte_present, pte_t) @@ -270,8 +278,19 @@ BTFIXUPDEF_CALL_CONST(pte_t, pte_mkyoung, pte_t) #define pfn_pte(pfn, prot) mk_pte(pfn_to_page(pfn), prot) -BTFIXUPDEF_CALL(unsigned long, pte_pfn, pte_t) -#define pte_pfn(pte) BTFIXUP_CALL(pte_pfn)(pte) +static inline unsigned long pte_pfn(pte_t pte) +{ + if (srmmu_device_memory(pte_val(pte))) { + /* Just return something that will cause + * pfn_valid() to return false. This makes + * copy_one_pte() to just directly copy to + * PTE over. + */ + return ~0UL; + } + return (pte_val(pte) & SRMMU_PTE_PMASK) >> (PAGE_SHIFT-4); +} + #define pte_page(pte) pfn_to_page(pte_pfn(pte)) /* |
