1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * arch/arm/include/asm/hugetlb-3level.h
 4 *
 5 * Copyright (C) 2012 ARM Ltd.
 6 *
 7 * Based on arch/x86/include/asm/hugetlb.h.
 
 
 
 
 
 
 
 
 
 
 
 
 
 8 */
 9
10#ifndef _ASM_ARM_HUGETLB_3LEVEL_H
11#define _ASM_ARM_HUGETLB_3LEVEL_H
12
13
14/*
15 * If our huge pte is non-zero then mark the valid bit.
16 * This allows pte_present(huge_ptep_get(mm,addr,ptep)) to return true for non-zero
17 * ptes.
18 * (The valid bit is automatically cleared by set_pte_at for PROT_NONE ptes).
19 */
20#define __HAVE_ARCH_HUGE_PTEP_GET
21static inline pte_t huge_ptep_get(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
22{
23	pte_t retval = *ptep;
24	if (pte_val(retval))
25		pte_val(retval) |= L_PTE_VALID;
26	return retval;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
27}
28
29#endif /* _ASM_ARM_HUGETLB_3LEVEL_H */

 
 1/*
 2 * arch/arm/include/asm/hugetlb-3level.h
 3 *
 4 * Copyright (C) 2012 ARM Ltd.
 5 *
 6 * Based on arch/x86/include/asm/hugetlb.h.
 7 *
 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.
11 *
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.
16 *
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
20 */
21
22#ifndef _ASM_ARM_HUGETLB_3LEVEL_H
23#define _ASM_ARM_HUGETLB_3LEVEL_H
24
25
26/*
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
29 * ptes.
30 * (The valid bit is automatically cleared by set_pte_at for PROT_NONE ptes).
31 */
32static inline pte_t huge_ptep_get(pte_t *ptep)
 
33{
34	pte_t retval = *ptep;
35	if (pte_val(retval))
36		pte_val(retval) |= L_PTE_VALID;
37	return retval;
38}
39
40static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
41				   pte_t *ptep, pte_t pte)
42{
43	set_pte_at(mm, addr, ptep, pte);
44}
45
46static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,
47					 unsigned long addr, pte_t *ptep)
48{
49	ptep_clear_flush(vma, addr, ptep);
50}
51
52static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
53					   unsigned long addr, pte_t *ptep)
54{
55	ptep_set_wrprotect(mm, addr, ptep);
56}
57
58static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
59					    unsigned long addr, pte_t *ptep)
60{
61	return ptep_get_and_clear(mm, addr, ptep);
62}
63
64static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
65					     unsigned long addr, pte_t *ptep,
66					     pte_t pte, int dirty)
67{
68	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
69}
70
71#endif /* _ASM_ARM_HUGETLB_3LEVEL_H */