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() boot_cpu_has(X86_FEATURE_PSE) 8 9 static 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 */ 19 static 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 30 static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb, 31 unsigned long addr, unsigned long end, 32 unsigned long floor, 33 unsigned long ceiling) 34 { 35 free_pgd_range(tlb, addr, end, floor, ceiling); 36 } 37 38 static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, 39 pte_t *ptep, pte_t pte) 40 { 41 set_pte_at(mm, addr, ptep, pte); 42 } 43 44 static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm, 45 unsigned long addr, pte_t *ptep) 46 { 47 return ptep_get_and_clear(mm, addr, ptep); 48 } 49 50 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, 51 unsigned long addr, pte_t *ptep) 52 { 53 ptep_clear_flush(vma, addr, ptep); 54 } 55 56 static inline int huge_pte_none(pte_t pte) 57 { 58 return pte_none(pte); 59 } 60 61 static inline pte_t huge_pte_wrprotect(pte_t pte) 62 { 63 return pte_wrprotect(pte); 64 } 65 66 static 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 72 static 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 79 static inline pte_t huge_ptep_get(pte_t *ptep) 80 { 81 return *ptep; 82 } 83 84 static inline void arch_clear_hugepage_flags(struct page *page) 85 { 86 } 87 88 #endif /* _ASM_X86_HUGETLB_H */ 89