1#ifndef _ASM_X86_HUGETLB_H 2#define _ASM_X86_HUGETLB_H 3 4#include <asm/page.h> 5#include <asm-generic/hugetlb.h> 6 7 8static inline int is_hugepage_only_range(struct mm_struct *mm, 9 unsigned long addr, 10 unsigned long len) { 11 return 0; 12} 13 14/* 15 * If the arch doesn't supply something else, assume that hugepage 16 * size aligned regions are ok without further preparation. 17 */ 18static inline int prepare_hugepage_range(struct file *file, 19 unsigned long addr, unsigned long len) 20{ 21 struct hstate *h = hstate_file(file); 22 if (len & ~huge_page_mask(h)) 23 return -EINVAL; 24 if (addr & ~huge_page_mask(h)) 25 return -EINVAL; 26 return 0; 27} 28 29static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm) { 30} 31 32static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb, 33 unsigned long addr, unsigned long end, 34 unsigned long floor, 35 unsigned long ceiling) 36{ 37 free_pgd_range(tlb, addr, end, floor, ceiling); 38} 39 40static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, 41 pte_t *ptep, pte_t pte) 42{ 43 set_pte_at(mm, addr, ptep, pte); 44} 45 46static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm, 47 unsigned long addr, pte_t *ptep) 48{ 49 return ptep_get_and_clear(mm, addr, ptep); 50} 51 52static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, 53 unsigned long addr, pte_t *ptep) 54{ 55 ptep_clear_flush(vma, addr, ptep); 56} 57 58static inline int huge_pte_none(pte_t pte) 59{ 60 return pte_none(pte); 61} 62 63static inline pte_t huge_pte_wrprotect(pte_t pte) 64{ 65 return pte_wrprotect(pte); 66} 67 68static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, 69 unsigned long addr, pte_t *ptep) 70{ 71 ptep_set_wrprotect(mm, addr, ptep); 72} 73 74static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma, 75 unsigned long addr, pte_t *ptep, 76 pte_t pte, int dirty) 77{ 78 return ptep_set_access_flags(vma, addr, ptep, pte, dirty); 79} 80 81static inline pte_t huge_ptep_get(pte_t *ptep) 82{ 83 return *ptep; 84} 85 86static inline int arch_prepare_hugepage(struct page *page) 87{ 88 return 0; 89} 90 91static inline void arch_release_hugepage(struct page *page) 92{ 93} 94 95static inline void arch_clear_hugepage_flags(struct page *page) 96{ 97} 98 99#endif /* _ASM_X86_HUGETLB_H */ 100