| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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. |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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(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 | */ |
| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 20 | #define __HAVE_ARCH_HUGE_PTEP_GET |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 21 | static inline pte_t huge_ptep_get(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 | |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 29 | #endif /* _ASM_ARM_HUGETLB_3LEVEL_H */ |