1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_X86_DISABLED_FEATURES_H 3 #define _ASM_X86_DISABLED_FEATURES_H 4 5 /* These features, although they might be available in a CPU 6 * will not be used because the compile options to support 7 * them are not present. 8 * 9 * This code allows them to be checked and disabled at 10 * compile time without an explicit #ifdef. Use 11 * cpu_feature_enabled(). 12 */ 13 14 #ifdef CONFIG_X86_INTEL_MPX 15 # define DISABLE_MPX 0 16 #else 17 # define DISABLE_MPX (1<<(X86_FEATURE_MPX & 31)) 18 #endif 19 20 #ifdef CONFIG_X86_64 21 # define DISABLE_VME (1<<(X86_FEATURE_VME & 31)) 22 # define DISABLE_K6_MTRR (1<<(X86_FEATURE_K6_MTRR & 31)) 23 # define DISABLE_CYRIX_ARR (1<<(X86_FEATURE_CYRIX_ARR & 31)) 24 # define DISABLE_CENTAUR_MCR (1<<(X86_FEATURE_CENTAUR_MCR & 31)) 25 # define DISABLE_PCID 0 26 #else 27 # define DISABLE_VME 0 28 # define DISABLE_K6_MTRR 0 29 # define DISABLE_CYRIX_ARR 0 30 # define DISABLE_CENTAUR_MCR 0 31 # define DISABLE_PCID (1<<(X86_FEATURE_PCID & 31)) 32 #endif /* CONFIG_X86_64 */ 33 34 #ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS 35 # define DISABLE_PKU 0 36 # define DISABLE_OSPKE 0 37 #else 38 # define DISABLE_PKU (1<<(X86_FEATURE_PKU & 31)) 39 # define DISABLE_OSPKE (1<<(X86_FEATURE_OSPKE & 31)) 40 #endif /* CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS */ 41 42 #ifdef CONFIG_X86_5LEVEL 43 # define DISABLE_LA57 0 44 #else 45 # define DISABLE_LA57 (1<<(X86_FEATURE_LA57 & 31)) 46 #endif 47 48 /* 49 * Make sure to add features to the correct mask 50 */ 51 #define DISABLED_MASK0 (DISABLE_VME) 52 #define DISABLED_MASK1 0 53 #define DISABLED_MASK2 0 54 #define DISABLED_MASK3 (DISABLE_CYRIX_ARR|DISABLE_CENTAUR_MCR|DISABLE_K6_MTRR) 55 #define DISABLED_MASK4 (DISABLE_PCID) 56 #define DISABLED_MASK5 0 57 #define DISABLED_MASK6 0 58 #define DISABLED_MASK7 0 59 #define DISABLED_MASK8 0 60 #define DISABLED_MASK9 (DISABLE_MPX) 61 #define DISABLED_MASK10 0 62 #define DISABLED_MASK11 0 63 #define DISABLED_MASK12 0 64 #define DISABLED_MASK13 0 65 #define DISABLED_MASK14 0 66 #define DISABLED_MASK15 0 67 #define DISABLED_MASK16 (DISABLE_PKU|DISABLE_OSPKE|DISABLE_LA57) 68 #define DISABLED_MASK17 0 69 #define DISABLED_MASK_CHECK BUILD_BUG_ON_ZERO(NCAPINTS != 18) 70 71 #endif /* _ASM_X86_DISABLED_FEATURES_H */ 72