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
19 #include <asm-generic/hugetlb.h>
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);
36 if (len & ~huge_page_mask(h))
38 if (addr & ~huge_page_mask(h))
43 static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,
44 unsigned long addr, unsigned long end,
46 unsigned long ceiling)
48 free_pgd_range(tlb, addr, end, floor, ceiling);
51 static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
52 pte_t *ptep, pte_t pte)
57 static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
58 unsigned long addr, pte_t *ptep)
60 return ptep_get_and_clear(mm, addr, ptep);
63 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
64 unsigned long addr, pte_t *ptep)
66 ptep_clear_flush(vma, addr, ptep);
69 static inline int huge_pte_none(pte_t pte)
74 static inline pte_t huge_pte_wrprotect(pte_t pte)
76 return pte_wrprotect(pte);
79 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
80 unsigned long addr, pte_t *ptep)
82 ptep_set_wrprotect(mm, addr, ptep);
85 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
86 unsigned long addr, pte_t *ptep,
89 return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
92 static inline pte_t huge_ptep_get(pte_t *ptep)
97 static inline void arch_clear_hugepage_flags(struct page *page)
101 #ifdef CONFIG_HUGETLB_SUPER_PAGES
102 static inline pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma,
103 struct page *page, int writable)
105 size_t pagesize = huge_page_size(hstate_vma(vma));
106 if (pagesize != PUD_SIZE && pagesize != PMD_SIZE)
107 entry = pte_mksuper(entry);
110 #define arch_make_huge_pte arch_make_huge_pte
112 /* Sizes to scale up page size for PTEs with HV_PTE_SUPER bit. */
114 HUGE_SHIFT_PGDIR = 0,
119 extern int huge_shift[HUGE_SHIFT_ENTRIES];
122 #endif /* _ASM_TILE_HUGETLB_H */