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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-11 08:27:49 +0000 |
commit | ace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch) | |
tree | b2d64bc10158fdd5497876388cd68142ca374ed3 /include/linux/set_memory.h | |
parent | Initial commit. (diff) | |
download | linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip |
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/linux/set_memory.h')
-rw-r--r-- | include/linux/set_memory.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/include/linux/set_memory.h b/include/linux/set_memory.h new file mode 100644 index 000000000..95ac8398e --- /dev/null +++ b/include/linux/set_memory.h @@ -0,0 +1,81 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright 2017, Michael Ellerman, IBM Corporation. + */ +#ifndef _LINUX_SET_MEMORY_H_ +#define _LINUX_SET_MEMORY_H_ + +#ifdef CONFIG_ARCH_HAS_SET_MEMORY +#include <asm/set_memory.h> +#else +static inline int set_memory_ro(unsigned long addr, int numpages) { return 0; } +static inline int set_memory_rw(unsigned long addr, int numpages) { return 0; } +static inline int set_memory_x(unsigned long addr, int numpages) { return 0; } +static inline int set_memory_nx(unsigned long addr, int numpages) { return 0; } +#endif + +#ifndef set_memory_rox +static inline int set_memory_rox(unsigned long addr, int numpages) +{ + int ret = set_memory_ro(addr, numpages); + if (ret) + return ret; + return set_memory_x(addr, numpages); +} +#endif + +#ifndef CONFIG_ARCH_HAS_SET_DIRECT_MAP +static inline int set_direct_map_invalid_noflush(struct page *page) +{ + return 0; +} +static inline int set_direct_map_default_noflush(struct page *page) +{ + return 0; +} + +static inline bool kernel_page_present(struct page *page) +{ + return true; +} +#else /* CONFIG_ARCH_HAS_SET_DIRECT_MAP */ +/* + * Some architectures, e.g. ARM64 can disable direct map modifications at + * boot time. Let them overrive this query. + */ +#ifndef can_set_direct_map +static inline bool can_set_direct_map(void) +{ + return true; +} +#define can_set_direct_map can_set_direct_map +#endif +#endif /* CONFIG_ARCH_HAS_SET_DIRECT_MAP */ + +#ifdef CONFIG_X86_64 +int set_mce_nospec(unsigned long pfn); +int clear_mce_nospec(unsigned long pfn); +#else +static inline int set_mce_nospec(unsigned long pfn) +{ + return 0; +} +static inline int clear_mce_nospec(unsigned long pfn) +{ + return 0; +} +#endif + +#ifndef CONFIG_ARCH_HAS_MEM_ENCRYPT +static inline int set_memory_encrypted(unsigned long addr, int numpages) +{ + return 0; +} + +static inline int set_memory_decrypted(unsigned long addr, int numpages) +{ + return 0; +} +#endif /* CONFIG_ARCH_HAS_MEM_ENCRYPT */ + +#endif /* _LINUX_SET_MEMORY_H_ */ |