linux/arch/x86/include/asm/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 …
#else
#define NEED_FPU …
#endif

#if defined(CONFIG_X86_PAE) || defined(CONFIG_X86_64)
#define NEED_PAE …
#else
#define NEED_PAE …
#endif

#ifdef CONFIG_X86_CMPXCHG64
#define NEED_CX8 …
#else
#define NEED_CX8 …
#endif

#if defined(CONFIG_X86_CMOV) || defined(CONFIG_X86_64)
#define NEED_CMOV …
#else
#define NEED_CMOV …
#endif

#define NEED_3DNOW …

#if defined(CONFIG_X86_P6_NOP) || defined(CONFIG_X86_64)
#define NEED_NOPL …
#else
#define NEED_NOPL …
#endif

#ifdef CONFIG_MATOM
#define NEED_MOVBE …
#else
#define NEED_MOVBE …
#endif

#ifdef CONFIG_X86_64
#ifdef CONFIG_PARAVIRT_XXL
/* Paravirtualized systems may not have PSE or PGE available */
#define NEED_PSE …
#define NEED_PGE …
#else
#define NEED_PSE …
#define NEED_PGE …
#endif
#define NEED_MSR …
#define NEED_FXSR …
#define NEED_XMM …
#define NEED_XMM2 …
#define NEED_LM …
#else
#define NEED_PSE …
#define NEED_MSR …
#define NEED_PGE …
#define NEED_FXSR …
#define NEED_XMM …
#define NEED_XMM2 …
#define NEED_LM …
#endif

#define REQUIRED_MASK0 …
#define SSE_MASK …

#define REQUIRED_MASK1 …

#define REQUIRED_MASK2 …
#define REQUIRED_MASK3 …
#define REQUIRED_MASK4 …
#define REQUIRED_MASK5 …
#define REQUIRED_MASK6 …
#define REQUIRED_MASK7 …
#define REQUIRED_MASK8 …
#define REQUIRED_MASK9 …
#define REQUIRED_MASK10 …
#define REQUIRED_MASK11 …
#define REQUIRED_MASK12 …
#define REQUIRED_MASK13 …
#define REQUIRED_MASK14 …
#define REQUIRED_MASK15 …
#define REQUIRED_MASK16 …
#define REQUIRED_MASK17 …
#define REQUIRED_MASK18 …
#define REQUIRED_MASK19 …
#define REQUIRED_MASK20 …
#define REQUIRED_MASK21 …
#define REQUIRED_MASK_CHECK …

#endif /* _ASM_X86_REQUIRED_FEATURES_H */