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 #ifdef CONFIG_HUGETLB_PAGE 8 struct pud_huge_patch_entry { 9 unsigned int addr; 10 unsigned int insn; 11 }; 12 extern struct pud_huge_patch_entry __pud_huge_patch, __pud_huge_patch_end; 13 #endif 14 15 void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, 16 pte_t *ptep, pte_t pte); 17 18 pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, 19 pte_t *ptep); 20 21 static inline int is_hugepage_only_range(struct mm_struct *mm, 22 unsigned long addr, 23 unsigned long len) { 24 return 0; 25 } 26 27 /* 28 * If the arch doesn't supply something else, assume that hugepage 29 * size aligned regions are ok without further preparation. 30 */ 31 static inline int prepare_hugepage_range(struct file *file, 32 unsigned long addr, unsigned long len) 33 { 34 struct hstate *h = hstate_file(file); 35 36 if (len & ~huge_page_mask(h)) 37 return -EINVAL; 38 if (addr & ~huge_page_mask(h)) 39 return -EINVAL; 40 return 0; 41 } 42 43 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, 44 unsigned long addr, pte_t *ptep) 45 { 46 } 47 48 static inline int huge_pte_none(pte_t pte) 49 { 50 return pte_none(pte); 51 } 52 53 static inline pte_t huge_pte_wrprotect(pte_t pte) 54 { 55 return pte_wrprotect(pte); 56 } 57 58 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, 59 unsigned long addr, pte_t *ptep) 60 { 61 pte_t old_pte = *ptep; 62 set_huge_pte_at(mm, addr, ptep, pte_wrprotect(old_pte)); 63 } 64 65 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma, 66 unsigned long addr, pte_t *ptep, 67 pte_t pte, int dirty) 68 { 69 int changed = !pte_same(*ptep, pte); 70 if (changed) { 71 set_huge_pte_at(vma->vm_mm, addr, ptep, pte); 72 flush_tlb_page(vma, addr); 73 } 74 return changed; 75 } 76 77 static inline pte_t huge_ptep_get(pte_t *ptep) 78 { 79 return *ptep; 80 } 81 82 static inline void arch_clear_hugepage_flags(struct page *page) 83 { 84 } 85 86 void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr, 87 unsigned long end, unsigned long floor, 88 unsigned long ceiling); 89 90 #endif /* _ASM_SPARC64_HUGETLB_H */ 91