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