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 #define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
16 void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
17 pte_t *ptep, pte_t pte);
19 pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr,
22 static inline int is_hugepage_only_range(struct mm_struct *mm,
29 * If the arch doesn't supply something else, assume that hugepage
30 * size aligned regions are ok without further preparation.
32 static inline int prepare_hugepage_range(struct file *file,
33 unsigned long addr, unsigned long len)
35 struct hstate *h = hstate_file(file);
37 if (len & ~huge_page_mask(h))
39 if (addr & ~huge_page_mask(h))
44 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
45 unsigned long addr, pte_t *ptep)
49 static inline int huge_pte_none(pte_t pte)
54 static inline pte_t huge_pte_wrprotect(pte_t pte)
56 return pte_wrprotect(pte);
59 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
60 unsigned long addr, pte_t *ptep)
62 pte_t old_pte = *ptep;
63 set_huge_pte_at(mm, addr, ptep, pte_wrprotect(old_pte));
66 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
67 unsigned long addr, pte_t *ptep,
70 int changed = !pte_same(*ptep, pte);
72 set_huge_pte_at(vma->vm_mm, addr, ptep, pte);
73 flush_tlb_page(vma, addr);
78 static inline pte_t huge_ptep_get(pte_t *ptep)
83 static inline void arch_clear_hugepage_flags(struct page *page)
87 #define __HAVE_ARCH_HUGETLB_FREE_PGD_RANGE
88 void hugetlb_free_pgd_range(struct mmu_gather *tlb, unsigned long addr,
89 unsigned long end, unsigned long floor,
90 unsigned long ceiling);
92 #include <asm-generic/hugetlb.h>
94 #endif /* _ASM_SPARC64_HUGETLB_H */