2 * arch/arm/include/asm/hugetlb-3level.h
4 * Copyright (C) 2012 ARM Ltd.
6 * Based on arch/x86/include/asm/hugetlb.h.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #ifndef _ASM_ARM_HUGETLB_3LEVEL_H
23 #define _ASM_ARM_HUGETLB_3LEVEL_H
27 * If our huge pte is non-zero then mark the valid bit.
28 * This allows pte_present(huge_ptep_get(ptep)) to return true for non-zero
30 * (The valid bit is automatically cleared by set_pte_at for PROT_NONE ptes).
32 static inline pte_t huge_ptep_get(pte_t *ptep)
36 pte_val(retval) |= L_PTE_VALID;
40 static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
41 pte_t *ptep, pte_t pte)
43 set_pte_at(mm, addr, ptep, pte);
46 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
47 unsigned long addr, pte_t *ptep)
49 ptep_clear_flush(vma, addr, ptep);
52 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
53 unsigned long addr, pte_t *ptep)
55 ptep_set_wrprotect(mm, addr, ptep);
58 static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
59 unsigned long addr, pte_t *ptep)
61 return ptep_get_and_clear(mm, addr, ptep);
64 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
65 unsigned long addr, pte_t *ptep,
68 return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
71 #endif /* _ASM_ARM_HUGETLB_3LEVEL_H */