name : required-features.h #ifndef _ASM_X86_REQUIRED_FEATURES_H #define _ASM_X86_REQUIRED_FEATURES_H /* Define minimum CPUID feature set for kernel These bits are checked really early to actually display a visible error message before the kernel dies. Make sure to assign features to the proper mask! Some requirements that are not in CPUID yet are also in the CONFIG_X86_MINIMUM_CPU_FAMILY which is checked too. The real information is in arch/x86/Kconfig.cpu, this just converts the CONFIGs into a bitmask */ #ifndef CONFIG_MATH_EMULATION # define NEED_FPU (1<<(X86_FEATURE_FPU & 31)) #else # define NEED_FPU 0 #endif #if defined(CONFIG_X86_PAE) || defined(CONFIG_X86_64) # define NEED_PAE (1<<(X86_FEATURE_PAE & 31)) #else # define NEED_PAE 0 #endif #ifdef CONFIG_X86_CMPXCHG64 # define NEED_CX8 (1<<(X86_FEATURE_CX8 & 31)) #else # define NEED_CX8 0 #endif #if defined(CONFIG_X86_CMOV) || defined(CONFIG_X86_64) # define NEED_CMOV (1<<(X86_FEATURE_CMOV & 31)) #else # define NEED_CMOV 0 #endif # define NEED_3DNOW 0 #if defined(CONFIG_X86_P6_NOP) || defined(CONFIG_X86_64) # define NEED_NOPL (1<<(X86_FEATURE_NOPL & 31)) #else # define NEED_NOPL 0 #endif #ifdef CONFIG_MATOM # define NEED_MOVBE (1<<(X86_FEATURE_MOVBE & 31)) #else # define NEED_MOVBE 0 #endif #ifdef CONFIG_X86_64 #ifdef CONFIG_PARAVIRT_XXL /* Paravirtualized systems may not have PSE or PGE available */ #define NEED_PSE 0 #define NEED_PGE 0 #else #define NEED_PSE (1<<(X86_FEATURE_PSE) & 31) #define NEED_PGE (1<<(X86_FEATURE_PGE) & 31) #endif #define NEED_MSR (1<<(X86_FEATURE_MSR & 31)) #define NEED_FXSR (1<<(X86_FEATURE_FXSR & 31)) #define NEED_XMM (1<<(X86_FEATURE_XMM & 31)) #define NEED_XMM2 (1<<(X86_FEATURE_XMM2 & 31)) #define NEED_LM (1<<(X86_FEATURE_LM & 31)) #else #define NEED_PSE 0 #define NEED_MSR 0 #define NEED_PGE 0 #define NEED_FXSR 0 #define NEED_XMM 0 #define NEED_XMM2 0 #define NEED_LM 0 #endif #define REQUIRED_MASK0 (NEED_FPU|NEED_PSE|NEED_MSR|NEED_PAE|\ NEED_CX8|NEED_PGE|NEED_FXSR|NEED_CMOV|\ NEED_XMM|NEED_XMM2) #define SSE_MASK (NEED_XMM|NEED_XMM2) #define REQUIRED_MASK1 (NEED_LM|NEED_3DNOW) #define REQUIRED_MASK2 0 #define REQUIRED_MASK3 (NEED_NOPL) #define REQUIRED_MASK4 (NEED_MOVBE) #define REQUIRED_MASK5 0 #define REQUIRED_MASK6 0 #define REQUIRED_MASK7 0 #define REQUIRED_MASK8 0 #define REQUIRED_MASK9 0 #define REQUIRED_MASK10 0 #define REQUIRED_MASK11 0 #define REQUIRED_MASK12 0 #define REQUIRED_MASK13 0 #define REQUIRED_MASK14 0 #define REQUIRED_MASK15 0 #define REQUIRED_MASK16 0 #define REQUIRED_MASK17 0 #define REQUIRED_MASK18 0 #define REQUIRED_MASK19 0 #define REQUIRED_MASK20 0 #define REQUIRED_MASK21 0 #define REQUIRED_MASK_CHECK BUILD_BUG_ON_ZERO(NCAPINTS != 22) #endif /* _ASM_X86_REQUIRED_FEATURES_H */