1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright 2017, Michael Ellerman, IBM Corporation. 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 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 } 26 27 static inline bool kernel_page_present(struct page *page) 28 { 29 return true; 30 } 31 #endif 32 33 #ifndef set_mce_nospec 34 static inline int set_mce_nospec(unsigned long pfn, bool unmap) 35 { 36 return 0; 37 } 38 #endif 39 40 #ifndef clear_mce_nospec 41 static inline int clear_mce_nospec(unsigned long pfn) 42 { 43 return 0; 44 } 45 #endif 46 47 #ifndef CONFIG_ARCH_HAS_MEM_ENCRYPT 48 static inline int set_memory_encrypted(unsigned long addr, int numpages) 49 { 50 return 0; 51 } 52 53 static inline int set_memory_decrypted(unsigned long addr, int numpages) 54 { 55 return 0; 56 } 57 #endif /* CONFIG_ARCH_HAS_MEM_ENCRYPT */ 58 59 #endif /* _LINUX_SET_MEMORY_H_ */ 60