xref: /linux/arch/x86/include/asm/disabled-features.h (revision 164666fa66669d437bdcc8d5f1744a2aee73be41)
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_SMAP
14 # define DISABLE_SMAP	0
15 #else
16 # define DISABLE_SMAP	(1<<(X86_FEATURE_SMAP & 31))
17 #endif
18 
19 #ifdef CONFIG_X86_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 /* Force disable because it's broken beyond repair */
60 #define DISABLE_ENQCMD		(1 << (X86_FEATURE_ENQCMD & 31))
61 
62 #ifdef CONFIG_X86_SGX
63 # define DISABLE_SGX	0
64 #else
65 # define DISABLE_SGX	(1 << (X86_FEATURE_SGX & 31))
66 #endif
67 
68 /*
69  * Make sure to add features to the correct mask
70  */
71 #define DISABLED_MASK0	(DISABLE_VME)
72 #define DISABLED_MASK1	0
73 #define DISABLED_MASK2	0
74 #define DISABLED_MASK3	(DISABLE_CYRIX_ARR|DISABLE_CENTAUR_MCR|DISABLE_K6_MTRR)
75 #define DISABLED_MASK4	(DISABLE_PCID)
76 #define DISABLED_MASK5	0
77 #define DISABLED_MASK6	0
78 #define DISABLED_MASK7	(DISABLE_PTI)
79 #define DISABLED_MASK8	0
80 #define DISABLED_MASK9	(DISABLE_SMAP|DISABLE_SGX)
81 #define DISABLED_MASK10	0
82 #define DISABLED_MASK11	0
83 #define DISABLED_MASK12	0
84 #define DISABLED_MASK13	0
85 #define DISABLED_MASK14	0
86 #define DISABLED_MASK15	0
87 #define DISABLED_MASK16	(DISABLE_PKU|DISABLE_OSPKE|DISABLE_LA57|DISABLE_UMIP| \
88 			 DISABLE_ENQCMD)
89 #define DISABLED_MASK17	0
90 #define DISABLED_MASK18	0
91 #define DISABLED_MASK19	0
92 #define DISABLED_MASK_CHECK BUILD_BUG_ON_ZERO(NCAPINTS != 20)
93 
94 #endif /* _ASM_X86_DISABLED_FEATURES_H */
95