1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_SH_HUGETLB_H 3 #define _ASM_SH_HUGETLB_H 4 5 #include <asm/cacheflush.h> 6 #include <asm/page.h> 7 #include <asm-generic/hugetlb.h> 8 9 10 static inline int is_hugepage_only_range(struct mm_struct *mm, 11 unsigned long addr, 12 unsigned long len) { 13 return 0; 14 } 15 16 /* 17 * If the arch doesn't supply something else, assume that hugepage 18 * size aligned regions are ok without further preparation. 19 */ 20 static inline int prepare_hugepage_range(struct file *file, 21 unsigned long addr, unsigned long len) 22 { 23 if (len & ~HPAGE_MASK) 24 return -EINVAL; 25 if (addr & ~HPAGE_MASK) 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 } 54 55 static inline int huge_pte_none(pte_t pte) 56 { 57 return pte_none(pte); 58 } 59 60 static inline pte_t huge_pte_wrprotect(pte_t pte) 61 { 62 return pte_wrprotect(pte); 63 } 64 65 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, 66 unsigned long addr, pte_t *ptep) 67 { 68 ptep_set_wrprotect(mm, addr, ptep); 69 } 70 71 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma, 72 unsigned long addr, pte_t *ptep, 73 pte_t pte, int dirty) 74 { 75 return ptep_set_access_flags(vma, addr, ptep, pte, dirty); 76 } 77 78 static inline pte_t huge_ptep_get(pte_t *ptep) 79 { 80 return *ptep; 81 } 82 83 static inline void arch_clear_hugepage_flags(struct page *page) 84 { 85 clear_bit(PG_dcache_clean, &page->flags); 86 } 87 88 #endif /* _ASM_SH_HUGETLB_H */ 89