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_MASK_CHECK BUILD_BUG_ON_ZERO(NCAPINTS != 18) 81 82#endif /* _ASM_X86_DISABLED_FEATURES_H */ 83