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gerrit-public.fairphone.software / kernel / msm / 999b9da40ea4c9efb31689c08d1d1b7a621ecce0 / . / arch / x86 / include / asm / required-features.h
blob: 64cf2d24fad1c2605c16b528cc10e8e37c9bc77c [file] [log] [blame]
H. Peter Anvin1965aae2008-10-22 22:26:29 -0700[diff] [blame]1#ifndef _ASM_X86_REQUIRED_FEATURES_H
2#define _ASM_X86_REQUIRED_FEATURES_H
Brian Gerst23e53052007-10-20 13:41:41 -0400[diff] [blame]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))
Thomas Gleixner96a388d2007-10-11 11:20:03 +0200[diff] [blame]16#else
Brian Gerst23e53052007-10-20 13:41:41 -0400[diff] [blame]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))
Brian Gerst23e53052007-10-20 13:41:41 -0400[diff] [blame]22#else
23# define NEED_PAE 0
Jan Beulichf8096f92008-04-22 16:27:29 +0100[diff] [blame]24#endif
25
26#ifdef CONFIG_X86_CMPXCHG64
27# define NEED_CX8 (1<<(X86_FEATURE_CX8 & 31))
28#else
Brian Gerst23e53052007-10-20 13:41:41 -0400[diff] [blame]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
H. Peter Anvinb6734c32008-08-18 17:39:32 -0700[diff] [blame]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
Brian Gerst23e53052007-10-20 13:41:41 -0400[diff] [blame]50#ifdef CONFIG_X86_64
Jeremy Fitzhardinge5f241e62009-03-16 17:08:48 -0700[diff] [blame]51#ifdef CONFIG_PARAVIRT
52/* Paravirtualized systems may not have PSE or PGE available */
Jeremy Fitzhardinge4f30cb02008-06-25 00:19:21 -0400[diff] [blame]53#define NEED_PSE 0
Jeremy Fitzhardinge68509cd2009-03-08 03:59:04 -0700[diff] [blame]54#define NEED_PGE 0
Jeremy Fitzhardinge5f241e62009-03-16 17:08:48 -0700[diff] [blame]55#else
56#define NEED_PSE (1<<(X86_FEATURE_PSE) & 31)
57#define NEED_PGE (1<<(X86_FEATURE_PGE) & 31)
58#endif
59#define NEED_MSR (1<<(X86_FEATURE_MSR & 31))
Brian Gerst23e53052007-10-20 13:41:41 -0400[diff] [blame]60#define NEED_FXSR (1<<(X86_FEATURE_FXSR & 31))
61#define NEED_XMM (1<<(X86_FEATURE_XMM & 31))
62#define NEED_XMM2 (1<<(X86_FEATURE_XMM2 & 31))
63#define NEED_LM (1<<(X86_FEATURE_LM & 31))
64#else
65#define NEED_PSE 0
66#define NEED_MSR 0
67#define NEED_PGE 0
68#define NEED_FXSR 0
69#define NEED_XMM 0
70#define NEED_XMM2 0
71#define NEED_LM 0
72#endif
73
74#define REQUIRED_MASK0 (NEED_FPU|NEED_PSE|NEED_MSR|NEED_PAE|\
75 NEED_CX8|NEED_PGE|NEED_FXSR|NEED_CMOV|\
76 NEED_XMM|NEED_XMM2)
77#define SSE_MASK (NEED_XMM|NEED_XMM2)
78
79#define REQUIRED_MASK1 (NEED_LM|NEED_3DNOW)
80
81#define REQUIRED_MASK2 0
H. Peter Anvinb6734c32008-08-18 17:39:32 -0700[diff] [blame]82#define REQUIRED_MASK3 (NEED_NOPL)
Brian Gerst23e53052007-10-20 13:41:41 -0400[diff] [blame]83#define REQUIRED_MASK4 0
84#define REQUIRED_MASK5 0
85#define REQUIRED_MASK6 0
86#define REQUIRED_MASK7 0
87
H. Peter Anvin1965aae2008-10-22 22:26:29 -0700[diff] [blame]88#endif /* _ASM_X86_REQUIRED_FEATURES_H */