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Linux kernel mirror (for testing)
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linux
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_UMIP
14# define DISABLE_UMIP 0
15#else
16# define DISABLE_UMIP (1<<(X86_FEATURE_UMIP & 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#ifdef CONFIG_PAGE_TABLE_ISOLATION
48# define DISABLE_PTI 0
49#else
50# define DISABLE_PTI (1 << (X86_FEATURE_PTI & 31))
51#endif
52
53#ifdef CONFIG_INTEL_IOMMU_SVM
54# define DISABLE_ENQCMD 0
55#else
56# define DISABLE_ENQCMD (1 << (X86_FEATURE_ENQCMD & 31))
57#endif
58
59#ifdef CONFIG_X86_SGX
60# define DISABLE_SGX 0
61#else
62# define DISABLE_SGX (1 << (X86_FEATURE_SGX & 31))
63#endif
64
65/*
66 * Make sure to add features to the correct mask
67 */
68#define DISABLED_MASK0 (DISABLE_VME)
69#define DISABLED_MASK1 0
70#define DISABLED_MASK2 0
71#define DISABLED_MASK3 (DISABLE_CYRIX_ARR|DISABLE_CENTAUR_MCR|DISABLE_K6_MTRR)
72#define DISABLED_MASK4 (DISABLE_PCID)
73#define DISABLED_MASK5 0
74#define DISABLED_MASK6 0
75#define DISABLED_MASK7 (DISABLE_PTI)
76#define DISABLED_MASK8 0
77#define DISABLED_MASK9 (DISABLE_SGX)
78#define DISABLED_MASK10 0
79#define DISABLED_MASK11 0
80#define DISABLED_MASK12 0
81#define DISABLED_MASK13 0
82#define DISABLED_MASK14 0
83#define DISABLED_MASK15 0
84#define DISABLED_MASK16 (DISABLE_PKU|DISABLE_OSPKE|DISABLE_LA57|DISABLE_UMIP| \
85 DISABLE_ENQCMD)
86#define DISABLED_MASK17 0
87#define DISABLED_MASK18 0
88#define DISABLED_MASK19 0
89#define DISABLED_MASK_CHECK BUILD_BUG_ON_ZERO(NCAPINTS != 20)
90
91#endif /* _ASM_X86_DISABLED_FEATURES_H */