1 #ifndef _ASM_SPARC64_HUGETLB_H 2 #define _ASM_SPARC64_HUGETLB_H 3 4 #include <asm/page.h> 5 #include <asm-generic/hugetlb.h> 6 7 8 void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, 9 pte_t *ptep, pte_t pte); 10 11 pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, 12 pte_t *ptep); 13 14 static inline int is_hugepage_only_range(struct mm_struct *mm, 15 unsigned long addr, 16 unsigned long len) { 17 return 0; 18 } 19 20 /* 21 * If the arch doesn't supply something else, assume that hugepage 22 * size aligned regions are ok without further preparation. 23 */ 24 static inline int prepare_hugepage_range(struct file *file, 25 unsigned long addr, unsigned long len) 26 { 27 if (len & ~HPAGE_MASK) 28 return -EINVAL; 29 if (addr & ~HPAGE_MASK) 30 return -EINVAL; 31 return 0; 32 } 33 34 static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb, 35 unsigned long addr, unsigned long end, 36 unsigned long floor, 37 unsigned long ceiling) 38 { 39 free_pgd_range(tlb, addr, end, floor, ceiling); 40 } 41 42 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, 43 unsigned long addr, pte_t *ptep) 44 { 45 } 46 47 static inline int huge_pte_none(pte_t pte) 48 { 49 return pte_none(pte); 50 } 51 52 static inline pte_t huge_pte_wrprotect(pte_t pte) 53 { 54 return pte_wrprotect(pte); 55 } 56 57 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, 58 unsigned long addr, pte_t *ptep) 59 { 60 pte_t old_pte = *ptep; 61 set_huge_pte_at(mm, addr, ptep, pte_wrprotect(old_pte)); 62 } 63 64 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma, 65 unsigned long addr, pte_t *ptep, 66 pte_t pte, int dirty) 67 { 68 int changed = !pte_same(*ptep, pte); 69 if (changed) { 70 set_huge_pte_at(vma->vm_mm, addr, ptep, pte); 71 flush_tlb_page(vma, addr); 72 } 73 return changed; 74 } 75 76 static inline pte_t huge_ptep_get(pte_t *ptep) 77 { 78 return *ptep; 79 } 80 81 static inline void arch_clear_hugepage_flags(struct page *page) 82 { 83 } 84 85 #endif /* _ASM_SPARC64_HUGETLB_H */ 86