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_INTEL_UMIP
  20 # define DISABLE_UMIP   0
  21 #else
  22 # define DISABLE_UMIP   (1<<(X86_FEATURE_UMIP & 31))
  23 #endif
  24
  25 #ifdef CONFIG_X86_64
  26 # define DISABLE_VME            (1<<(X86_FEATURE_VME & 31))
  27 # define DISABLE_K6_MTRR        (1<<(X86_FEATURE_K6_MTRR & 31))
  28 # define DISABLE_CYRIX_ARR      (1<<(X86_FEATURE_CYRIX_ARR & 31))
  29 # define DISABLE_CENTAUR_MCR    (1<<(X86_FEATURE_CENTAUR_MCR & 31))
  30 # define DISABLE_PCID           0
  31 #else
  32 # define DISABLE_VME            0
  33 # define DISABLE_K6_MTRR        0
  34 # define DISABLE_CYRIX_ARR      0
  35 # define DISABLE_CENTAUR_MCR    0
  36 # define DISABLE_PCID           (1<<(X86_FEATURE_PCID & 31))
  37 #endif /* CONFIG_X86_64 */
  38
  39 #ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS
  40 # define DISABLE_PKU            0
  41 # define DISABLE_OSPKE          0
  42 #else
  43 # define DISABLE_PKU            (1<<(X86_FEATURE_PKU & 31))
  44 # define DISABLE_OSPKE          (1<<(X86_FEATURE_OSPKE & 31))
  45 #endif /* CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS */
  46
  47 #ifdef CONFIG_X86_5LEVEL
  48 # define DISABLE_LA57   0
  49 #else
  50 # define DISABLE_LA57   (1<<(X86_FEATURE_LA57 & 31))
  51 #endif
  52
  53 #ifdef CONFIG_PAGE_TABLE_ISOLATION
  54 # define DISABLE_PTI            0
  55 #else
  56 # define DISABLE_PTI            (1 << (X86_FEATURE_PTI & 31))
  57 #endif
  58
  59 /*
  60  * Make sure to add features to the correct mask
  61  */
  62 #define DISABLED_MASK0  (DISABLE_VME)
  63 #define DISABLED_MASK1  0
  64 #define DISABLED_MASK2  0
  65 #define DISABLED_MASK3  (DISABLE_CYRIX_ARR|DISABLE_CENTAUR_MCR|DISABLE_K6_MTRR)
  66 #define DISABLED_MASK4  (DISABLE_PCID)
  67 #define DISABLED_MASK5  0
  68 #define DISABLED_MASK6  0
  69 #define DISABLED_MASK7  (DISABLE_PTI)
  70 #define DISABLED_MASK8  0
  71 #define DISABLED_MASK9  (DISABLE_MPX)
  72 #define DISABLED_MASK10 0
  73 #define DISABLED_MASK11 0
  74 #define DISABLED_MASK12 0
  75 #define DISABLED_MASK13 0
  76 #define DISABLED_MASK14 0
  77 #define DISABLED_MASK15 0
  78 #define DISABLED_MASK16 (DISABLE_PKU|DISABLE_OSPKE|DISABLE_LA57|DISABLE_UMIP)
  79 #define DISABLED_MASK17 0
  80 #define DISABLED_MASK18 0
  81 #define DISABLED_MASK_CHECK BUILD_BUG_ON_ZERO(NCAPINTS != 19)
  82
  83 #endif /* _ASM_X86_DISABLED_FEATURES_H */