diff options
Diffstat (limited to 'arch/powerpc/include/asm/pgtable.h')
| -rw-r--r-- | arch/powerpc/include/asm/pgtable.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h index d0ee46de24..9224f23065 100644 --- a/arch/powerpc/include/asm/pgtable.h +++ b/arch/powerpc/include/asm/pgtable.h @@ -71,6 +71,12 @@ static inline pgprot_t pte_pgprot(pte_t pte) return __pgprot(pte_flags); } +static inline pgprot_t pgprot_nx(pgprot_t prot) +{ + return pte_pgprot(pte_exprotect(__pte(pgprot_val(prot)))); +} +#define pgprot_nx pgprot_nx + #ifndef pmd_page_vaddr static inline const void *pmd_page_vaddr(pmd_t pmd) { @@ -110,6 +116,41 @@ void mark_initmem_nx(void); static inline void mark_initmem_nx(void) { } #endif +#define __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS +int ptep_set_access_flags(struct vm_area_struct *vma, unsigned long address, + pte_t *ptep, pte_t entry, int dirty); + +pgprot_t __phys_mem_access_prot(unsigned long pfn, unsigned long size, + pgprot_t vma_prot); + +struct file; +static inline pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn, + unsigned long size, pgprot_t vma_prot) +{ + return __phys_mem_access_prot(pfn, size, vma_prot); +} +#define __HAVE_PHYS_MEM_ACCESS_PROT + +void __update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t *ptep); + +/* + * This gets called at the end of handling a page fault, when + * the kernel has put a new PTE into the page table for the process. + * We use it to ensure coherency between the i-cache and d-cache + * for the page which has just been mapped in. + * On machines which use an MMU hash table, we use this to put a + * corresponding HPTE into the hash table ahead of time, instead of + * waiting for the inevitable extra hash-table miss exception. + */ +static inline void update_mmu_cache_range(struct vm_fault *vmf, + struct vm_area_struct *vma, unsigned long address, + pte_t *ptep, unsigned int nr) +{ + if ((mmu_has_feature(MMU_FTR_HPTE_TABLE) && !radix_enabled()) || + (IS_ENABLED(CONFIG_PPC_E500) && IS_ENABLED(CONFIG_HUGETLB_PAGE))) + __update_mmu_cache(vma, address, ptep); +} + /* * When used, PTE_FRAG_NR is defined in subarch pgtable.h * so we are sure it is included when arriving here. |