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   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.  Make sure to assign features to the proper mask!
   7
   8    The real information is in arch/x86_64/Kconfig.cpu, this just converts
   9    the CONFIGs into a bitmask */
  10
  11 /* x86-64 baseline features */
  12 #define NEED_FPU        (1<<(X86_FEATURE_FPU & 31))
  13 #define NEED_PSE        (1<<(X86_FEATURE_PSE & 31))
  14 #define NEED_MSR        (1<<(X86_FEATURE_MSR & 31))
  15 #define NEED_PAE        (1<<(X86_FEATURE_PAE & 31))
  16 #define NEED_CX8        (1<<(X86_FEATURE_CX8 & 31))
  17 #define NEED_PGE        (1<<(X86_FEATURE_PGE & 31))
  18 #define NEED_FXSR       (1<<(X86_FEATURE_FXSR & 31))
  19 #define NEED_CMOV       (1<<(X86_FEATURE_CMOV & 31))
  20 #define NEED_XMM        (1<<(X86_FEATURE_XMM & 31))
  21 #define NEED_XMM2       (1<<(X86_FEATURE_XMM2 & 31))
  22
  23 #define REQUIRED_MASK0  (NEED_FPU|NEED_PSE|NEED_MSR|NEED_PAE|\
  24                          NEED_CX8|NEED_PGE|NEED_FXSR|NEED_CMOV|\
  25                          NEED_XMM|NEED_XMM2)
  26 #define SSE_MASK        (NEED_XMM|NEED_XMM2)
  27
  28 /* x86-64 baseline features */
  29 #define NEED_LM         (1<<(X86_FEATURE_LM & 31))
  30
  31 #ifdef CONFIG_X86_USE_3DNOW
  32 # define NEED_3DNOW     (1<<(X86_FEATURE_3DNOW & 31))
  33 #else
  34 # define NEED_3DNOW     0
  35 #endif
  36
  37 #define REQUIRED_MASK1  (NEED_LM|NEED_3DNOW)
  38
  39 #define REQUIRED_MASK2  0
  40 #define REQUIRED_MASK3  0
  41 #define REQUIRED_MASK4  0
  42 #define REQUIRED_MASK5  0
  43 #define REQUIRED_MASK6  0
  44 #define REQUIRED_MASK7  0
  45
  46 #endif