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
21 static 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 */
30
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