1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_SPARC64_HUGETLB_H
3 #define _ASM_SPARC64_HUGETLB_H
7 #ifdef CONFIG_HUGETLB_PAGE
8 struct pud_huge_patch_entry {
12 extern struct pud_huge_patch_entry __pud_huge_patch, __pud_huge_patch_end;
15 void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
16 pte_t *ptep, pte_t pte);
18 pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
21 static inline int is_hugepage_only_range(struct mm_struct *mm,
28 * If the arch doesn't supply something else, assume that hugepage
29 * size aligned regions are ok without further preparation.
31 static inline int prepare_hugepage_range(struct file *file,
32 unsigned long addr, unsigned long len)
34 struct hstate *h = hstate_file(file);
36 if (len & ~huge_page_mask(h))
38 if (addr & ~huge_page_mask(h))
43 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
44 unsigned long addr, pte_t *ptep)
48 static inline int huge_pte_none(pte_t pte)
53 static inline pte_t huge_pte_wrprotect(pte_t pte)
55 return pte_wrprotect(pte);
58 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
59 unsigned long addr, pte_t *ptep)
61 pte_t old_pte = *ptep;
62 set_huge_pte_at(mm, addr, ptep, pte_wrprotect(old_pte));
65 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
66 unsigned long addr, pte_t *ptep,
69 int changed = !pte_same(*ptep, pte);
71 set_huge_pte_at(vma->vm_mm, addr, ptep, pte);
72 flush_tlb_page(vma, addr);
77 static inline pte_t huge_ptep_get(pte_t *ptep)
82 static inline void arch_clear_hugepage_flags(struct page *page)
86 #define __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE
87 void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
88 unsigned long end, unsigned long floor,
89 unsigned long ceiling);
91 #include <asm-generic/hugetlb.h>
93 #endif /* _ASM_SPARC64_HUGETLB_H */