1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_X86_REQUIRED_FEATURES_H 3 #define _ASM_X86_REQUIRED_FEATURES_H 4 5 /* Define minimum CPUID feature set for kernel These bits are checked 6 really early to actually display a visible error message before the 7 kernel dies. Make sure to assign features to the proper mask! 8 9 Some requirements that are not in CPUID yet are also in the 10 CONFIG_X86_MINIMUM_CPU_FAMILY which is checked too. 11 12 The real information is in arch/x86/Kconfig.cpu, this just converts 13 the CONFIGs into a bitmask */ 14 15 #ifndef CONFIG_MATH_EMULATION 16 # define NEED_FPU (1<<(X86_FEATURE_FPU & 31)) 17 #else 18 # define NEED_FPU 0 19 #endif 20 21 #if defined(CONFIG_X86_PAE) || defined(CONFIG_X86_64) 22 # define NEED_PAE (1<<(X86_FEATURE_PAE & 31)) 23 #else 24 # define NEED_PAE 0 25 #endif 26 27 #ifdef CONFIG_X86_CMPXCHG64 28 # define NEED_CX8 (1<<(X86_FEATURE_CX8 & 31)) 29 #else 30 # define NEED_CX8 0 31 #endif 32 33 #if defined(CONFIG_X86_CMOV) || defined(CONFIG_X86_64) 34 # define NEED_CMOV (1<<(X86_FEATURE_CMOV & 31)) 35 #else 36 # define NEED_CMOV 0 37 #endif 38 39 #ifdef CONFIG_X86_USE_3DNOW 40 # define NEED_3DNOW (1<<(X86_FEATURE_3DNOW & 31)) 41 #else 42 # define NEED_3DNOW 0 43 #endif 44 45 #if defined(CONFIG_X86_P6_NOP) || defined(CONFIG_X86_64) 46 # define NEED_NOPL (1<<(X86_FEATURE_NOPL & 31)) 47 #else 48 # define NEED_NOPL 0 49 #endif 50 51 #ifdef CONFIG_MATOM 52 # define NEED_MOVBE (1<<(X86_FEATURE_MOVBE & 31)) 53 #else 54 # define NEED_MOVBE 0 55 #endif 56 57 #ifdef CONFIG_X86_5LEVEL 58 # define NEED_LA57 (1<<(X86_FEATURE_LA57 & 31)) 59 #else 60 # define NEED_LA57 0 61 #endif 62 63 #ifdef CONFIG_X86_64 64 #ifdef CONFIG_PARAVIRT 65 /* Paravirtualized systems may not have PSE or PGE available */ 66 #define NEED_PSE 0 67 #define NEED_PGE 0 68 #else 69 #define NEED_PSE (1<<(X86_FEATURE_PSE) & 31) 70 #define NEED_PGE (1<<(X86_FEATURE_PGE) & 31) 71 #endif 72 #define NEED_MSR (1<<(X86_FEATURE_MSR & 31)) 73 #define NEED_FXSR (1<<(X86_FEATURE_FXSR & 31)) 74 #define NEED_XMM (1<<(X86_FEATURE_XMM & 31)) 75 #define NEED_XMM2 (1<<(X86_FEATURE_XMM2 & 31)) 76 #define NEED_LM (1<<(X86_FEATURE_LM & 31)) 77 #else 78 #define NEED_PSE 0 79 #define NEED_MSR 0 80 #define NEED_PGE 0 81 #define NEED_FXSR 0 82 #define NEED_XMM 0 83 #define NEED_XMM2 0 84 #define NEED_LM 0 85 #endif 86 87 #define REQUIRED_MASK0 (NEED_FPU|NEED_PSE|NEED_MSR|NEED_PAE|\ 88 NEED_CX8|NEED_PGE|NEED_FXSR|NEED_CMOV|\ 89 NEED_XMM|NEED_XMM2) 90 #define SSE_MASK (NEED_XMM|NEED_XMM2) 91 92 #define REQUIRED_MASK1 (NEED_LM|NEED_3DNOW) 93 94 #define REQUIRED_MASK2 0 95 #define REQUIRED_MASK3 (NEED_NOPL) 96 #define REQUIRED_MASK4 (NEED_MOVBE) 97 #define REQUIRED_MASK5 0 98 #define REQUIRED_MASK6 0 99 #define REQUIRED_MASK7 0 100 #define REQUIRED_MASK8 0 101 #define REQUIRED_MASK9 0 102 #define REQUIRED_MASK10 0 103 #define REQUIRED_MASK11 0 104 #define REQUIRED_MASK12 0 105 #define REQUIRED_MASK13 0 106 #define REQUIRED_MASK14 0 107 #define REQUIRED_MASK15 0 108 #define REQUIRED_MASK16 (NEED_LA57) 109 #define REQUIRED_MASK17 0 110 #define REQUIRED_MASK_CHECK BUILD_BUG_ON_ZERO(NCAPINTS != 18) 111 112 #endif /* _ASM_X86_REQUIRED_FEATURES_H */ 113