2 * Copyright 2010 Tilera Corporation. All Rights Reserved.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation, version 2.
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
11 * NON INFRINGEMENT. See the GNU General Public License for
15 #ifndef _ASM_TILE_HUGETLB_H
16 #define _ASM_TILE_HUGETLB_H
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);
35 if (len & ~huge_page_mask(h))
37 if (addr & ~huge_page_mask(h))
42 static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm)
46 static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
47 unsigned long addr, unsigned long end,
49 unsigned long ceiling)
51 free_pgd_range(tlb, addr, end, floor, ceiling);
54 static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
55 pte_t *ptep, pte_t pte)
60 static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
61 unsigned long addr, pte_t *ptep)
63 return ptep_get_and_clear(mm, addr, ptep);
66 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
67 unsigned long addr, pte_t *ptep)
69 ptep_clear_flush(vma, addr, ptep);
72 static inline int huge_pte_none(pte_t pte)
77 static inline pte_t huge_pte_wrprotect(pte_t pte)
79 return pte_wrprotect(pte);
82 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
83 unsigned long addr, pte_t *ptep)
85 ptep_set_wrprotect(mm, addr, ptep);
88 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
89 unsigned long addr, pte_t *ptep,
92 return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
95 static inline pte_t huge_ptep_get(pte_t *ptep)
100 static inline int arch_prepare_hugepage(struct page *page)
105 static inline void arch_release_hugepage(struct page *page)
109 static inline void arch_clear_hugepage_flags(struct page *page)
113 #ifdef CONFIG_HUGETLB_SUPER_PAGES
114 static inline pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma,
115 struct page *page, int writable)
117 size_t pagesize = huge_page_size(hstate_vma(vma));
118 if (pagesize != PUD_SIZE && pagesize != PMD_SIZE)
119 entry = pte_mksuper(entry);
122 #define arch_make_huge_pte arch_make_huge_pte
124 /* Sizes to scale up page size for PTEs with HV_PTE_SUPER bit. */
126 HUGE_SHIFT_PGDIR = 0,
131 extern int huge_shift[HUGE_SHIFT_ENTRIES];
134 #endif /* _ASM_TILE_HUGETLB_H */