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 | ||
| d253ca0c RE |
17 | #ifndef CONFIG_ARCH_HAS_SET_DIRECT_MAP |
| 18 | static inline int set_direct_map_invalid_noflush(struct page *page) | |
| 19 | { | |
| 20 | return 0; | |
| 21 | } | |
| 22 | static inline int set_direct_map_default_noflush(struct page *page) | |
| 23 | { | |
| 24 | return 0; | |
| 25 | } | |
| 32a0de88 MR |
26 | |
| 27 | static inline bool kernel_page_present(struct page *page) | |
| 28 | { | |
| 29 | return true; | |
| 30 | } | |
| 6d47c23b MR |
31 | #else /* CONFIG_ARCH_HAS_SET_DIRECT_MAP */ |
| 32 | /* | |
| 33 | * Some architectures, e.g. ARM64 can disable direct map modifications at | |
| 34 | * boot time. Let them overrive this query. | |
| 35 | */ | |
| 36 | #ifndef can_set_direct_map | |
| 37 | static inline bool can_set_direct_map(void) | |
| 38 | { | |
| 39 | return true; | |
| 40 | } | |
| 41 | #define can_set_direct_map can_set_direct_map | |
| d253ca0c | 42 | #endif |
| 6d47c23b | 43 | #endif /* CONFIG_ARCH_HAS_SET_DIRECT_MAP */ |
| d253ca0c | 44 | |
| b3fdf939 | 45 | #ifdef CONFIG_X86_64 |
| 5898b43a | 46 | int set_mce_nospec(unsigned long pfn); |
| b3fdf939 JC |
47 | int clear_mce_nospec(unsigned long pfn); |
| 48 | #else | |
| 5898b43a | 49 | static inline int set_mce_nospec(unsigned long pfn) |
| 284ce401 DW |
50 | { |
| 51 | return 0; | |
| 52 | } | |
| 284ce401 DW |
53 | static inline int clear_mce_nospec(unsigned long pfn) |
| 54 | { | |
| 55 | return 0; | |
| 56 | } | |
| 57 | #endif | |
| 58 | ||
| b7fa0746 CH |
59 | #ifndef CONFIG_ARCH_HAS_MEM_ENCRYPT |
| 60 | static inline int set_memory_encrypted(unsigned long addr, int numpages) | |
| 61 | { | |
| 62 | return 0; | |
| 63 | } | |
| 64 | ||
| 65 | static inline int set_memory_decrypted(unsigned long addr, int numpages) | |
| 66 | { | |
| 67 | return 0; | |
| 68 | } | |
| 69 | #endif /* CONFIG_ARCH_HAS_MEM_ENCRYPT */ | |
| 70 | ||
| 938f8464 | 71 | #endif /* _LINUX_SET_MEMORY_H_ */ |