1 #ifndef _ASM_REQUIRED_FEATURES_H
2 #define _ASM_REQUIRED_FEATURES_H 1
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. Only add word 0 bits here
8 Some requirements that are not in CPUID yet are also in the
9 CONFIG_X86_MINIMUM_CPU mode which is checked too.
11 The real information is in arch/i386/Kconfig.cpu, this just converts
12 the CONFIGs into a bitmask */
15 #define NEED_PAE (1<<X86_FEATURE_PAE)
20 #ifdef CONFIG_X86_CMOV
21 #define NEED_CMOV (1<<X86_FEATURE_CMOV)
26 #ifdef CONFIG_X86_CMPXCHG64
27 #define NEED_CMPXCHG64 (1<<X86_FEATURE_CX8)
29 #define NEED_CMPXCHG64 0
32 #define REQUIRED_MASK1 (NEED_PAE|NEED_CMOV|NEED_CMPXCHG64)