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