/* 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 __must_check set_memory_ro(unsigned long addr, int numpages) { return 0; }static inline int __must_check set_memory_rw(unsigned long addr, int numpages) { return 0; }static inline int __must_check set_memory_x(unsigned long addr, int numpages) { return 0; }static inline int __must_check set_memory_nx(unsigned long addr, int numpages) { return 0; }#endif #ifndef set_memory_roxstatic 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_MAPstatic 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 int set_direct_map_valid_noflush(struct page *page,unsigned nr, bool valid)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_mapstatic 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_64int 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_ENCRYPTstatic 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_ */ quality 98%
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