diff options
Diffstat (limited to 'arch/arm/include/asm/pgtable.h')
| -rw-r--r-- | arch/arm/include/asm/pgtable.h | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h index 9655bce3d34..201ccaa11f6 100644 --- a/arch/arm/include/asm/pgtable.h +++ b/arch/arm/include/asm/pgtable.h @@ -262,10 +262,19 @@ extern struct page *empty_zero_page; #define pte_clear(mm,addr,ptep) set_pte_ext(ptep, __pte(0), 0) #define pte_page(pte) (pfn_to_page(pte_pfn(pte))) #define pte_offset_kernel(dir,addr) (pmd_page_vaddr(*(dir)) + __pte_index(addr)) -#define pte_offset_map(dir,addr) (pmd_page_vaddr(*(dir)) + __pte_index(addr)) -#define pte_offset_map_nested(dir,addr) (pmd_page_vaddr(*(dir)) + __pte_index(addr)) -#define pte_unmap(pte) do { } while (0) -#define pte_unmap_nested(pte) do { } while (0) + +#define pte_offset_map(dir,addr) (__pte_map(dir, KM_PTE0) + __pte_index(addr)) +#define pte_offset_map_nested(dir,addr) (__pte_map(dir, KM_PTE1) + __pte_index(addr)) +#define pte_unmap(pte) __pte_unmap(pte, KM_PTE0) +#define pte_unmap_nested(pte) __pte_unmap(pte, KM_PTE1) + +#ifndef CONFIG_HIGHPTE +#define __pte_map(dir,km) pmd_page_vaddr(*(dir)) +#define __pte_unmap(pte,km) do { } while (0) +#else +#define __pte_map(dir,km) ((pte_t *)kmap_atomic(pmd_page(*(dir)), km) + PTRS_PER_PTE) +#define __pte_unmap(pte,km) kunmap_atomic((pte - PTRS_PER_PTE), km) +#endif #define set_pte_ext(ptep,pte,ext) cpu_set_pte_ext(ptep,pte,ext) |