LXR linux/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# define DISABLE_PCID           0
  25#else
  26# define DISABLE_VME            0
  27# define DISABLE_K6_MTRR        0
  28# define DISABLE_CYRIX_ARR      0
  29# define DISABLE_CENTAUR_MCR    0
  30# define DISABLE_PCID           (1<<(X86_FEATURE_PCID & 31))
  31#endif /* CONFIG_X86_64 */
  32
  33#ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS
  34# define DISABLE_PKU            0
  35# define DISABLE_OSPKE          0
  36#else
  37# define DISABLE_PKU            (1<<(X86_FEATURE_PKU & 31))
  38# define DISABLE_OSPKE          (1<<(X86_FEATURE_OSPKE & 31))
  39#endif /* CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS */
  40
  41#ifdef CONFIG_X86_5LEVEL
  42# define DISABLE_LA57   0
  43#else
  44# define DISABLE_LA57   (1<<(X86_FEATURE_LA57 & 31))
  45#endif
  46
  47/*
  48 * Make sure to add features to the correct mask
  49 */
  50#define DISABLED_MASK0  (DISABLE_VME)
  51#define DISABLED_MASK1  0
  52#define DISABLED_MASK2  0
  53#define DISABLED_MASK3  (DISABLE_CYRIX_ARR|DISABLE_CENTAUR_MCR|DISABLE_K6_MTRR)
  54#define DISABLED_MASK4  (DISABLE_PCID)
  55#define DISABLED_MASK5  0
  56#define DISABLED_MASK6  0
  57#define DISABLED_MASK7  0
  58#define DISABLED_MASK8  0
  59#define DISABLED_MASK9  (DISABLE_MPX)
  60#define DISABLED_MASK10 0
  61#define DISABLED_MASK11 0
  62#define DISABLED_MASK12 0
  63#define DISABLED_MASK13 0
  64#define DISABLED_MASK14 0
  65#define DISABLED_MASK15 0
  66#define DISABLED_MASK16 (DISABLE_PKU|DISABLE_OSPKE|DISABLE_LA57)
  67#define DISABLED_MASK17 0
  68#define DISABLED_MASK_CHECK BUILD_BUG_ON_ZERO(NCAPINTS != 18)
  69
  70#endif /* _ASM_X86_DISABLED_FEATURES_H */
  71