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Linux kernel mirror (for testing)
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linux
1#ifndef _ASM_REQUIRED_FEATURES_H
2#define _ASM_REQUIRED_FEATURES_H 1
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# define NEED_CX8 (1<<(X86_FEATURE_CX8 & 31))
23#else
24# define NEED_PAE 0
25# define NEED_CX8 0
26#endif
27
28#if defined(CONFIG_X86_CMOV) || defined(CONFIG_X86_64)
29# define NEED_CMOV (1<<(X86_FEATURE_CMOV & 31))
30#else
31# define NEED_CMOV 0
32#endif
33
34#ifdef CONFIG_X86_USE_3DNOW
35# define NEED_3DNOW (1<<(X86_FEATURE_3DNOW & 31))
36#else
37# define NEED_3DNOW 0
38#endif
39
40#ifdef CONFIG_X86_64
41#define NEED_PSE (1<<(X86_FEATURE_PSE & 31))
42#define NEED_MSR (1<<(X86_FEATURE_MSR & 31))
43#define NEED_PGE (1<<(X86_FEATURE_PGE & 31))
44#define NEED_FXSR (1<<(X86_FEATURE_FXSR & 31))
45#define NEED_XMM (1<<(X86_FEATURE_XMM & 31))
46#define NEED_XMM2 (1<<(X86_FEATURE_XMM2 & 31))
47#define NEED_LM (1<<(X86_FEATURE_LM & 31))
48#else
49#define NEED_PSE 0
50#define NEED_MSR 0
51#define NEED_PGE 0
52#define NEED_FXSR 0
53#define NEED_XMM 0
54#define NEED_XMM2 0
55#define NEED_LM 0
56#endif
57
58#define REQUIRED_MASK0 (NEED_FPU|NEED_PSE|NEED_MSR|NEED_PAE|\
59 NEED_CX8|NEED_PGE|NEED_FXSR|NEED_CMOV|\
60 NEED_XMM|NEED_XMM2)
61#define SSE_MASK (NEED_XMM|NEED_XMM2)
62
63#define REQUIRED_MASK1 (NEED_LM|NEED_3DNOW)
64
65#define REQUIRED_MASK2 0
66#define REQUIRED_MASK3 0
67#define REQUIRED_MASK4 0
68#define REQUIRED_MASK5 0
69#define REQUIRED_MASK6 0
70#define REQUIRED_MASK7 0
71
72#endif