1 #ifndef _ASM_X86_REQUIRED_FEATURES_H
2 #define _ASM_X86_REQUIRED_FEATURES_H
3 
4 /* Define minimum CPUID feature set for kernel These bits are checked
5    really early to actually display a visible error message before the
6    kernel dies.  Make sure to assign features to the proper mask!
7 
8    Some requirements that are not in CPUID yet are also in the
9    CONFIG_X86_MINIMUM_CPU_FAMILY which is checked too.
10 
11    The real information is in arch/x86/Kconfig.cpu, this just converts
12    the CONFIGs into a bitmask */
13 
14 #ifndef CONFIG_MATH_EMULATION
15 # define NEED_FPU	(1<<(X86_FEATURE_FPU & 31))
16 #else
17 # define NEED_FPU	0
18 #endif
19 
20 #if defined(CONFIG_X86_PAE) || defined(CONFIG_X86_64)
21 # define NEED_PAE	(1<<(X86_FEATURE_PAE & 31))
22 #else
23 # define NEED_PAE	0
24 #endif
25 
26 #ifdef CONFIG_X86_CMPXCHG64
27 # define NEED_CX8	(1<<(X86_FEATURE_CX8 & 31))
28 #else
29 # define NEED_CX8	0
30 #endif
31 
32 #if defined(CONFIG_X86_CMOV) || defined(CONFIG_X86_64)
33 # define NEED_CMOV	(1<<(X86_FEATURE_CMOV & 31))
34 #else
35 # define NEED_CMOV	0
36 #endif
37 
38 #ifdef CONFIG_X86_USE_3DNOW
39 # define NEED_3DNOW	(1<<(X86_FEATURE_3DNOW & 31))
40 #else
41 # define NEED_3DNOW	0
42 #endif
43 
44 #if defined(CONFIG_X86_P6_NOP) || defined(CONFIG_X86_64)
45 # define NEED_NOPL	(1<<(X86_FEATURE_NOPL & 31))
46 #else
47 # define NEED_NOPL	0
48 #endif
49 
50 #ifdef CONFIG_MATOM
51 # define NEED_MOVBE	(1<<(X86_FEATURE_MOVBE & 31))
52 #else
53 # define NEED_MOVBE	0
54 #endif
55 
56 #ifdef CONFIG_X86_64
57 #ifdef CONFIG_PARAVIRT_XXL
58 /* Paravirtualized systems may not have PSE or PGE available */
59 #define NEED_PSE	0
60 #define NEED_PGE	0
61 #else
62 #define NEED_PSE	(1<<(X86_FEATURE_PSE) & 31)
63 #define NEED_PGE	(1<<(X86_FEATURE_PGE) & 31)
64 #endif
65 #define NEED_MSR	(1<<(X86_FEATURE_MSR & 31))
66 #define NEED_FXSR	(1<<(X86_FEATURE_FXSR & 31))
67 #define NEED_XMM	(1<<(X86_FEATURE_XMM & 31))
68 #define NEED_XMM2	(1<<(X86_FEATURE_XMM2 & 31))
69 #define NEED_LM		(1<<(X86_FEATURE_LM & 31))
70 #else
71 #define NEED_PSE	0
72 #define NEED_MSR	0
73 #define NEED_PGE	0
74 #define NEED_FXSR	0
75 #define NEED_XMM	0
76 #define NEED_XMM2	0
77 #define NEED_LM		0
78 #endif
79 
80 #define REQUIRED_MASK0	(NEED_FPU|NEED_PSE|NEED_MSR|NEED_PAE|\
81 			 NEED_CX8|NEED_PGE|NEED_FXSR|NEED_CMOV|\
82 			 NEED_XMM|NEED_XMM2)
83 #define SSE_MASK	(NEED_XMM|NEED_XMM2)
84 
85 #define REQUIRED_MASK1	(NEED_LM|NEED_3DNOW)
86 
87 #define REQUIRED_MASK2	0
88 #define REQUIRED_MASK3	(NEED_NOPL)
89 #define REQUIRED_MASK4	(NEED_MOVBE)
90 #define REQUIRED_MASK5	0
91 #define REQUIRED_MASK6	0
92 #define REQUIRED_MASK7	0
93 #define REQUIRED_MASK8	0
94 #define REQUIRED_MASK9	0
95 #define REQUIRED_MASK10	0
96 #define REQUIRED_MASK11	0
97 #define REQUIRED_MASK12	0
98 #define REQUIRED_MASK13	0
99 #define REQUIRED_MASK14	0
100 #define REQUIRED_MASK15	0
101 #define REQUIRED_MASK16	0
102 #define REQUIRED_MASK17	0
103 #define REQUIRED_MASK18	0
104 #define REQUIRED_MASK_CHECK BUILD_BUG_ON_ZERO(NCAPINTS != 19)
105 
106 #endif /* _ASM_X86_REQUIRED_FEATURES_H */
107