1 #ifndef _ASM_X86_DISABLED_FEATURES_H 2 #define _ASM_X86_DISABLED_FEATURES_H 3 4 /* These features, although they might be available in a CPU 5 * will not be used because the compile options to support 6 * them are not present. 7 * 8 * This code allows them to be checked and disabled at 9 * compile time without an explicit #ifdef. Use 10 * cpu_feature_enabled(). 11 */ 12 13 #ifdef CONFIG_X86_SMAP 14 # define DISABLE_SMAP 0 15 #else 16 # define DISABLE_SMAP (1<<(X86_FEATURE_SMAP & 31)) 17 #endif 18 19 #ifdef CONFIG_X86_UMIP 20 # define DISABLE_UMIP 0 21 #else 22 # define DISABLE_UMIP (1<<(X86_FEATURE_UMIP & 31)) 23 #endif 24 25 #ifdef CONFIG_X86_64 26 # define DISABLE_VME (1<<(X86_FEATURE_VME & 31)) 27 # define DISABLE_K6_MTRR (1<<(X86_FEATURE_K6_MTRR & 31)) 28 # define DISABLE_CYRIX_ARR (1<<(X86_FEATURE_CYRIX_ARR & 31)) 29 # define DISABLE_CENTAUR_MCR (1<<(X86_FEATURE_CENTAUR_MCR & 31)) 30 # define DISABLE_PCID 0 31 #else 32 # define DISABLE_VME 0 33 # define DISABLE_K6_MTRR 0 34 # define DISABLE_CYRIX_ARR 0 35 # define DISABLE_CENTAUR_MCR 0 36 # define DISABLE_PCID (1<<(X86_FEATURE_PCID & 31)) 37 #endif /* CONFIG_X86_64 */ 38 39 #ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS 40 # define DISABLE_PKU 0 41 # define DISABLE_OSPKE 0 42 #else 43 # define DISABLE_PKU (1<<(X86_FEATURE_PKU & 31)) 44 # define DISABLE_OSPKE (1<<(X86_FEATURE_OSPKE & 31)) 45 #endif /* CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS */ 46 47 #ifdef CONFIG_X86_5LEVEL 48 # define DISABLE_LA57 0 49 #else 50 # define DISABLE_LA57 (1<<(X86_FEATURE_LA57 & 31)) 51 #endif 52 53 #ifdef CONFIG_PAGE_TABLE_ISOLATION 54 # define DISABLE_PTI 0 55 #else 56 # define DISABLE_PTI (1 << (X86_FEATURE_PTI & 31)) 57 #endif 58 59 #ifdef CONFIG_RETPOLINE 60 # define DISABLE_RETPOLINE 0 61 #else 62 # define DISABLE_RETPOLINE ((1 << (X86_FEATURE_RETPOLINE & 31)) | \ 63 (1 << (X86_FEATURE_RETPOLINE_LFENCE & 31)) | \ 64 (1 << (X86_FEATURE_RETHUNK & 31)) | \ 65 (1 << (X86_FEATURE_UNRET & 31))) 66 #endif 67 68 /* Force disable because it's broken beyond repair */ 69 #define DISABLE_ENQCMD (1 << (X86_FEATURE_ENQCMD & 31)) 70 71 #ifdef CONFIG_X86_SGX 72 # define DISABLE_SGX 0 73 #else 74 # define DISABLE_SGX (1 << (X86_FEATURE_SGX & 31)) 75 #endif 76 77 /* 78 * Make sure to add features to the correct mask 79 */ 80 #define DISABLED_MASK0 (DISABLE_VME) 81 #define DISABLED_MASK1 0 82 #define DISABLED_MASK2 0 83 #define DISABLED_MASK3 (DISABLE_CYRIX_ARR|DISABLE_CENTAUR_MCR|DISABLE_K6_MTRR) 84 #define DISABLED_MASK4 (DISABLE_PCID) 85 #define DISABLED_MASK5 0 86 #define DISABLED_MASK6 0 87 #define DISABLED_MASK7 (DISABLE_PTI) 88 #define DISABLED_MASK8 0 89 #define DISABLED_MASK9 (DISABLE_SMAP|DISABLE_SGX) 90 #define DISABLED_MASK10 0 91 #define DISABLED_MASK11 (DISABLE_RETPOLINE) 92 #define DISABLED_MASK12 0 93 #define DISABLED_MASK13 0 94 #define DISABLED_MASK14 0 95 #define DISABLED_MASK15 0 96 #define DISABLED_MASK16 (DISABLE_PKU|DISABLE_OSPKE|DISABLE_LA57|DISABLE_UMIP| \ 97 DISABLE_ENQCMD) 98 #define DISABLED_MASK17 0 99 #define DISABLED_MASK18 0 100 #define DISABLED_MASK19 0 101 #define DISABLED_MASK_CHECK BUILD_BUG_ON_ZERO(NCAPINTS != 20) 102 103 #endif /* _ASM_X86_DISABLED_FEATURES_H */ 104