include/asm-i386/required-features.h

   1 #ifndef _ASM_REQUIRED_FEATURES_H
   2 #define _ASM_REQUIRED_FEATURES_H 1
   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.  Only add word 0 bits here
   7
   8    Some requirements that are not in CPUID yet are also in the
   9    CONFIG_X86_MINIMUM_CPU mode which is checked too.
  10
  11    The real information is in arch/i386/Kconfig.cpu, this just converts
  12    the CONFIGs into a bitmask */
  13
  14 #ifdef CONFIG_X86_PAE
  15 #define NEED_PAE        (1<<X86_FEATURE_PAE)
  16 #else
  17 #define NEED_PAE        0
  18 #endif
  19
  20 #ifdef CONFIG_X86_CMOV
  21 #define NEED_CMOV       (1<<X86_FEATURE_CMOV)
  22 #else
  23 #define NEED_CMOV       0
  24 #endif
  25
  26 #ifdef CONFIG_X86_CMPXCHG64
  27 #define NEED_CMPXCHG64  (1<<X86_FEATURE_CX8)
  28 #else
  29 #define NEED_CMPXCHG64  0
  30 #endif
  31
  32 #define REQUIRED_MASK1  (NEED_PAE|NEED_CMOV|NEED_CMPXCHG64)
  33
  34 #endif