| Andi Kleen | c7f81c9 | 2007-05-02 19:27:20 +0200 | [diff] [blame] | 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. Only add word 0 bits here |
| 7 | |
| 8 | Some requirements that are not in CPUID yet are also in the |
| 9 | CONFIG_X86_MINIMUM_CPU mode which is checked too. |
| 10 | |
| 11 | The real information is in arch/i386/Kconfig.cpu, this just converts |
| 12 | the CONFIGs into a bitmask */ |
| 13 | |
| 14 | #ifdef CONFIG_X86_PAE |
| 15 | #define NEED_PAE (1<<X86_FEATURE_PAE) |
| 16 | #else |
| 17 | #define NEED_PAE 0 |
| 18 | #endif |
| 19 | |
| 20 | #ifdef CONFIG_X86_CMOV |
| 21 | #define NEED_CMOV (1<<X86_FEATURE_CMOV) |
| 22 | #else |
| 23 | #define NEED_CMOV 0 |
| 24 | #endif |
| 25 | |
| 26 | #ifdef CONFIG_X86_CMPXCHG64 |
| 27 | #define NEED_CMPXCHG64 (1<<X86_FEATURE_CX8) |
| 28 | #else |
| 29 | #define NEED_CMPXCHG64 0 |
| 30 | #endif |
| 31 | |
| 32 | #define REQUIRED_MASK1 (NEED_PAE|NEED_CMOV|NEED_CMPXCHG64) |
| 33 | |
| 34 | #endif |