1 #ifndef _ASM_X86_REQUIRED_FEATURES_H 2 #define _ASM_X86_REQUIRED_FEATURES_H 3 4 /* Define minimum CPUID feature set for kernel These bits are checked 5 really early to actually display a visible error message before the 6 kernel dies. Make sure to assign features to the proper mask! 7 8 Some requirements that are not in CPUID yet are also in the 9 CONFIG_X86_MINIMUM_CPU_FAMILY which is checked too. 10 11 The real information is in arch/x86/Kconfig.cpu, this just converts 12 the CONFIGs into a bitmask */ 13 14 #ifndef CONFIG_MATH_EMULATION 15 # define NEED_FPU (1<<(X86_FEATURE_FPU & 31)) 16 #else 17 # define NEED_FPU 0 18 #endif 19 20 #if defined(CONFIG_X86_PAE) || defined(CONFIG_X86_64) 21 # define NEED_PAE (1<<(X86_FEATURE_PAE & 31)) 22 #else 23 # define NEED_PAE 0 24 #endif 25 26 #ifdef CONFIG_X86_CMPXCHG64 27 # define NEED_CX8 (1<<(X86_FEATURE_CX8 & 31)) 28 #else 29 # define NEED_CX8 0 30 #endif 31 32 #if defined(CONFIG_X86_CMOV) || defined(CONFIG_X86_64) 33 # define NEED_CMOV (1<<(X86_FEATURE_CMOV & 31)) 34 #else 35 # define NEED_CMOV 0 36 #endif 37 38 #ifdef CONFIG_X86_USE_3DNOW 39 # define NEED_3DNOW (1<<(X86_FEATURE_3DNOW & 31)) 40 #else 41 # define NEED_3DNOW 0 42 #endif 43 44 #if defined(CONFIG_X86_P6_NOP) || defined(CONFIG_X86_64) 45 # define NEED_NOPL (1<<(X86_FEATURE_NOPL & 31)) 46 #else 47 # define NEED_NOPL 0 48 #endif 49 50 #ifdef CONFIG_MATOM 51 # define NEED_MOVBE (1<<(X86_FEATURE_MOVBE & 31)) 52 #else 53 # define NEED_MOVBE 0 54 #endif 55 56 #ifdef CONFIG_X86_64 57 #ifdef CONFIG_PARAVIRT_XXL 58 /* Paravirtualized systems may not have PSE or PGE available */ 59 #define NEED_PSE 0 60 #define NEED_PGE 0 61 #else 62 #define NEED_PSE (1<<(X86_FEATURE_PSE) & 31) 63 #define NEED_PGE (1<<(X86_FEATURE_PGE) & 31) 64 #endif 65 #define NEED_MSR (1<<(X86_FEATURE_MSR & 31)) 66 #define NEED_FXSR (1<<(X86_FEATURE_FXSR & 31)) 67 #define NEED_XMM (1<<(X86_FEATURE_XMM & 31)) 68 #define NEED_XMM2 (1<<(X86_FEATURE_XMM2 & 31)) 69 #define NEED_LM (1<<(X86_FEATURE_LM & 31)) 70 #else 71 #define NEED_PSE 0 72 #define NEED_MSR 0 73 #define NEED_PGE 0 74 #define NEED_FXSR 0 75 #define NEED_XMM 0 76 #define NEED_XMM2 0 77 #define NEED_LM 0 78 #endif 79 80 #define REQUIRED_MASK0 (NEED_FPU|NEED_PSE|NEED_MSR|NEED_PAE|\ 81 NEED_CX8|NEED_PGE|NEED_FXSR|NEED_CMOV|\ 82 NEED_XMM|NEED_XMM2) 83 #define SSE_MASK (NEED_XMM|NEED_XMM2) 84 85 #define REQUIRED_MASK1 (NEED_LM|NEED_3DNOW) 86 87 #define REQUIRED_MASK2 0 88 #define REQUIRED_MASK3 (NEED_NOPL) 89 #define REQUIRED_MASK4 (NEED_MOVBE) 90 #define REQUIRED_MASK5 0 91 #define REQUIRED_MASK6 0 92 #define REQUIRED_MASK7 0 93 #define REQUIRED_MASK8 0 94 #define REQUIRED_MASK9 0 95 #define REQUIRED_MASK10 0 96 #define REQUIRED_MASK11 0 97 #define REQUIRED_MASK12 0 98 #define REQUIRED_MASK13 0 99 #define REQUIRED_MASK14 0 100 #define REQUIRED_MASK15 0 101 #define REQUIRED_MASK16 0 102 #define REQUIRED_MASK17 0 103 #define REQUIRED_MASK18 0 104 #define REQUIRED_MASK19 0 105 #define REQUIRED_MASK20 0 106 #define REQUIRED_MASK_CHECK BUILD_BUG_ON_ZERO(NCAPINTS != 21) 107 108 #endif /* _ASM_X86_REQUIRED_FEATURES_H */ 109