1 #ifndef _ASM_POWERPC_HUGETLB_H 2 #define _ASM_POWERPC_HUGETLB_H 3 4 #include <asm/page.h> 5 6 pte_t *huge_pte_offset_and_shift(struct mm_struct *mm, 7 unsigned long addr, unsigned *shift); 8 9 void flush_dcache_icache_hugepage(struct page *page); 10 11 int is_hugepage_only_range(struct mm_struct *mm, unsigned long addr, 12 unsigned long len); 13 14 void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr, 15 unsigned long end, unsigned long floor, 16 unsigned long ceiling); 17 18 /* 19 * The version of vma_mmu_pagesize() in arch/powerpc/mm/hugetlbpage.c needs 20 * to override the version in mm/hugetlb.c 21 */ 22 #define vma_mmu_pagesize vma_mmu_pagesize 23 24 /* 25 * If the arch doesn't supply something else, assume that hugepage 26 * size aligned regions are ok without further preparation. 27 */ 28 static inline int prepare_hugepage_range(struct file *file, 29 unsigned long addr, unsigned long len) 30 { 31 struct hstate *h = hstate_file(file); 32 if (len & ~huge_page_mask(h)) 33 return -EINVAL; 34 if (addr & ~huge_page_mask(h)) 35 return -EINVAL; 36 return 0; 37 } 38 39 static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm) 40 { 41 } 42 43 44 static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, 45 pte_t *ptep, pte_t pte) 46 { 47 set_pte_at(mm, addr, ptep, pte); 48 } 49 50 static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm, 51 unsigned long addr, pte_t *ptep) 52 { 53 unsigned long old = pte_update(mm, addr, ptep, ~0UL, 1); 54 return __pte(old); 55 } 56 57 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, 58 unsigned long addr, pte_t *ptep) 59 { 60 pte_t pte; 61 pte = huge_ptep_get_and_clear(vma->vm_mm, addr, ptep); 62 flush_tlb_page(vma, addr); 63 } 64 65 static inline int huge_pte_none(pte_t pte) 66 { 67 return pte_none(pte); 68 } 69 70 static inline pte_t huge_pte_wrprotect(pte_t pte) 71 { 72 return pte_wrprotect(pte); 73 } 74 75 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma, 76 unsigned long addr, pte_t *ptep, 77 pte_t pte, int dirty) 78 { 79 return ptep_set_access_flags(vma, addr, ptep, pte, dirty); 80 } 81 82 static inline pte_t huge_ptep_get(pte_t *ptep) 83 { 84 return *ptep; 85 } 86 87 static inline int arch_prepare_hugepage(struct page *page) 88 { 89 return 0; 90 } 91 92 static inline void arch_release_hugepage(struct page *page) 93 { 94 } 95 96 #endif /* _ASM_POWERPC_HUGETLB_H */ 97