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Release 4.11 arch/arm/include/asm/hugetlb-3level.h

/*
 * arch/arm/include/asm/hugetlb-3level.h
 *
 * Copyright (C) 2012 ARM Ltd.
 *
 * Based on arch/x86/include/asm/hugetlb.h.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

#ifndef _ASM_ARM_HUGETLB_3LEVEL_H

#define _ASM_ARM_HUGETLB_3LEVEL_H


/*
 * If our huge pte is non-zero then mark the valid bit.
 * This allows pte_present(huge_ptep_get(ptep)) to return true for non-zero
 * ptes.
 * (The valid bit is automatically cleared by set_pte_at for PROT_NONE ptes).
 */

static inline pte_t huge_ptep_get(pte_t *ptep) { pte_t retval = *ptep; if (pte_val(retval)) pte_val(retval) |= L_PTE_VALID; return retval; }

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static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte) { set_pte_at(mm, addr, ptep, pte); }

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static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep) { ptep_clear_flush(vma, addr, ptep); }

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static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep) { ptep_set_wrprotect(mm, addr, ptep); }

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static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) { return ptep_get_and_clear(mm, addr, ptep); }

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static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma, unsigned long addr, pte_t *ptep, pte_t pte, int dirty) { return ptep_set_access_flags(vma, addr, ptep, pte, dirty); }

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#endif /* _ASM_ARM_HUGETLB_3LEVEL_H */

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