projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| d2912cb1 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 938f8464 ME |
2 | /* |
| 3 | * Copyright 2017, Michael Ellerman, IBM Corporation. | |
| 938f8464 ME |
4 | */ |
| 5 | #ifndef _LINUX_SET_MEMORY_H_ | |
| 6 | #define _LINUX_SET_MEMORY_H_ | |
| 7 | ||
| 8 | #ifdef CONFIG_ARCH_HAS_SET_MEMORY | |
| 9 | #include <asm/set_memory.h> | |
| 10 | #else | |
| 11 | static inline int set_memory_ro(unsigned long addr, int numpages) { return 0; } | |
| 12 | static inline int set_memory_rw(unsigned long addr, int numpages) { return 0; } | |
| 13 | static inline int set_memory_x(unsigned long addr, int numpages) { return 0; } | |
| 14 | static inline int set_memory_nx(unsigned long addr, int numpages) { return 0; } | |
| 15 | #endif | |
| 16 | ||
| 60463628 | 17 | #ifndef set_memory_rox |
| d48567c9 PZ |
18 | static inline int set_memory_rox(unsigned long addr, int numpages) |
| 19 | { | |
| 20 | int ret = set_memory_ro(addr, numpages); | |
| 21 | if (ret) | |
| 22 | return ret; | |
| 23 | return set_memory_x(addr, numpages); | |
| 24 | } | |
| 60463628 | 25 | #endif |
| d48567c9 | 26 | |
| d253ca0c RE |
27 | #ifndef CONFIG_ARCH_HAS_SET_DIRECT_MAP |
| 28 | static inline int set_direct_map_invalid_noflush(struct page *page) | |
| 29 | { | |
| 30 | return 0; | |
| 31 | } | |
| 32 | static inline int set_direct_map_default_noflush(struct page *page) | |
| 33 | { | |
| 34 | return 0; | |
| 35 | } | |
| 32a0de88 MR |
36 | |
| 37 | static inline bool kernel_page_present(struct page *page) | |
| 38 | { | |
| 39 | return true; | |
| 40 | } | |
| 6d47c23b MR |
41 | #else /* CONFIG_ARCH_HAS_SET_DIRECT_MAP */ |
| 42 | /* | |
| 43 | * Some architectures, e.g. ARM64 can disable direct map modifications at | |
| 44 | * boot time. Let them overrive this query. | |
| 45 | */ | |
| 46 | #ifndef can_set_direct_map | |
| 47 | static inline bool can_set_direct_map(void) | |
| 48 | { | |
| 49 | return true; | |
| 50 | } | |
| 51 | #define can_set_direct_map can_set_direct_map | |
| d253ca0c | 52 | #endif |
| 6d47c23b | 53 | #endif /* CONFIG_ARCH_HAS_SET_DIRECT_MAP */ |
| d253ca0c | 54 | |
| b3fdf939 | 55 | #ifdef CONFIG_X86_64 |
| 5898b43a | 56 | int set_mce_nospec(unsigned long pfn); |
| b3fdf939 JC |
57 | int clear_mce_nospec(unsigned long pfn); |
| 58 | #else | |
| 5898b43a | 59 | static inline int set_mce_nospec(unsigned long pfn) |
| 284ce401 DW |
60 | { |
| 61 | return 0; | |
| 62 | } | |
| 284ce401 DW |
63 | static inline int clear_mce_nospec(unsigned long pfn) |
| 64 | { | |
| 65 | return 0; | |
| 66 | } | |
| 67 | #endif | |
| 68 | ||
| b7fa0746 CH |
69 | #ifndef CONFIG_ARCH_HAS_MEM_ENCRYPT |
| 70 | static inline int set_memory_encrypted(unsigned long addr, int numpages) | |
| 71 | { | |
| 72 | return 0; | |
| 73 | } | |
| 74 | ||
| 75 | static inline int set_memory_decrypted(unsigned long addr, int numpages) | |
| 76 | { | |
| 77 | return 0; | |
| 78 | } | |
| 79 | #endif /* CONFIG_ARCH_HAS_MEM_ENCRYPT */ | |
| 80 | ||
| 938f8464 | 81 | #endif /* _LINUX_SET_MEMORY_H_ */ |