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#define hugepages_supported() cpu_has_pse 8 9static inline int is_hugepage_only_range(struct mm_struct *mm, 10 unsigned long addr, 11 unsigned long len) { 12 return 0; 13} 14 15/* 16 * If the arch doesn't supply something else, assume that hugepage 17 * size aligned regions are ok without further preparation. 18 */ 19static inline int prepare_hugepage_range(struct file *file, 20 unsigned long addr, unsigned long len) 21{ 22 struct hstate *h = hstate_file(file); 23 if (len & ~huge_page_mask(h)) 24 return -EINVAL; 25 if (addr & ~huge_page_mask(h)) 26 return -EINVAL; 27 return 0; 28} 29 30static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm) { 31} 32 33static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb, 34 unsigned long addr, unsigned long end, 35 unsigned long floor, 36 unsigned long ceiling) 37{ 38 free_pgd_range(tlb, addr, end, floor, ceiling); 39} 40 41static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, 42 pte_t *ptep, pte_t pte) 43{ 44 set_pte_at(mm, addr, ptep, pte); 45} 46 47static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm, 48 unsigned long addr, pte_t *ptep) 49{ 50 return ptep_get_and_clear(mm, addr, ptep); 51} 52 53static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, 54 unsigned long addr, pte_t *ptep) 55{ 56 ptep_clear_flush(vma, addr, ptep); 57} 58 59static inline int huge_pte_none(pte_t pte) 60{ 61 return pte_none(pte); 62} 63 64static inline pte_t huge_pte_wrprotect(pte_t pte) 65{ 66 return pte_wrprotect(pte); 67} 68 69static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, 70 unsigned long addr, pte_t *ptep) 71{ 72 ptep_set_wrprotect(mm, addr, ptep); 73} 74 75static 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 82static inline pte_t huge_ptep_get(pte_t *ptep) 83{ 84 return *ptep; 85} 86 87static inline int arch_prepare_hugepage(struct page *page) 88{ 89 return 0; 90} 91 92static inline void arch_release_hugepage(struct page *page) 93{ 94} 95 96static inline void arch_clear_hugepage_flags(struct page *page) 97{ 98} 99 100#endif /* _ASM_X86_HUGETLB_H */ 101