arch/x86/include/asm/disabled-features.h

   1 #ifndef _ASM_X86_DISABLED_FEATURES_H
   2 #define _ASM_X86_DISABLED_FEATURES_H
   3
   4 /* These features, although they might be available in a CPU
   5  * will not be used because the compile options to support
   6  * them are not present.
   7  *
   8  * This code allows them to be checked and disabled at
   9  * compile time without an explicit #ifdef.  Use
  10  * cpu_feature_enabled().
  11  */
  12
  13 #ifdef CONFIG_X86_INTEL_MPX
  14 # define DISABLE_MPX    0
  15 #else
  16 # define DISABLE_MPX    (1<<(X86_FEATURE_MPX & 31))
  17 #endif
  18
  19 #ifdef CONFIG_X86_64
  20 # define DISABLE_VME            (1<<(X86_FEATURE_VME & 31))
  21 # define DISABLE_K6_MTRR        (1<<(X86_FEATURE_K6_MTRR & 31))
  22 # define DISABLE_CYRIX_ARR      (1<<(X86_FEATURE_CYRIX_ARR & 31))
  23 # define DISABLE_CENTAUR_MCR    (1<<(X86_FEATURE_CENTAUR_MCR & 31))
  24 #else
  25 # define DISABLE_VME            0
  26 # define DISABLE_K6_MTRR        0
  27 # define DISABLE_CYRIX_ARR      0
  28 # define DISABLE_CENTAUR_MCR    0
  29 #endif /* CONFIG_X86_64 */
  30
  31 #ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS
  32 # define DISABLE_PKU            0
  33 # define DISABLE_OSPKE          0
  34 #else
  35 # define DISABLE_PKU            (1<<(X86_FEATURE_PKU & 31))
  36 # define DISABLE_OSPKE          (1<<(X86_FEATURE_OSPKE & 31))
  37 #endif /* CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS */
  38
  39 #ifdef CONFIG_X86_5LEVEL
  40 # define DISABLE_LA57   0
  41 #else
  42 # define DISABLE_LA57   (1<<(X86_FEATURE_LA57 & 31))
  43 #endif
  44
  45 #ifdef CONFIG_PAGE_TABLE_ISOLATION
  46 # define DISABLE_PTI            0
  47 #else
  48 # define DISABLE_PTI            (1 << (X86_FEATURE_PTI & 31))
  49 #endif
  50
  51 /*
  52  * Make sure to add features to the correct mask
  53  */
  54 #define DISABLED_MASK0  (DISABLE_VME)
  55 #define DISABLED_MASK1  0
  56 #define DISABLED_MASK2  0
  57 #define DISABLED_MASK3  (DISABLE_CYRIX_ARR|DISABLE_CENTAUR_MCR|DISABLE_K6_MTRR)
  58 #define DISABLED_MASK4  0
  59 #define DISABLED_MASK5  0
  60 #define DISABLED_MASK6  0
  61 #define DISABLED_MASK7  (DISABLE_PTI)
  62 #define DISABLED_MASK8  0
  63 #define DISABLED_MASK9  (DISABLE_MPX)
  64 #define DISABLED_MASK10 0
  65 #define DISABLED_MASK11 0
  66 #define DISABLED_MASK12 0
  67 #define DISABLED_MASK13 0
  68 #define DISABLED_MASK14 0
  69 #define DISABLED_MASK15 0
  70 #define DISABLED_MASK16 (DISABLE_PKU|DISABLE_OSPKE|DISABLE_LA57)
  71 #define DISABLED_MASK17 0
  72 #define DISABLED_MASK_CHECK BUILD_BUG_ON_ZERO(NCAPINTS != 18)
  73
  74 #endif /* _ASM_X86_DISABLED_FEATURES_H */