diff options
Diffstat (limited to 'include/asm-i386/cpufeature.h')
| -rw-r--r-- | include/asm-i386/cpufeature.h | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/include/asm-i386/cpufeature.h b/include/asm-i386/cpufeature.h index f514e906643..7ea5f4a6706 100644 --- a/include/asm-i386/cpufeature.h +++ b/include/asm-i386/cpufeature.h @@ -81,6 +81,7 @@ #define X86_FEATURE_BTS (3*32+13) /* Branch Trace Store */ #define X86_FEATURE_LAPIC_TIMER_BROKEN (3*32+ 14) /* lapic timer broken in C1 */ #define X86_FEATURE_SYNC_RDTSC (3*32+15) /* RDTSC synchronizes the CPU */ +#define X86_FEATURE_REP_GOOD (3*32+16) /* rep microcode works well on this CPU */ /* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */ #define X86_FEATURE_XMM3 (4*32+ 0) /* Streaming SIMD Extensions-3 */ @@ -108,11 +109,17 @@ #define X86_FEATURE_LAHF_LM (6*32+ 0) /* LAHF/SAHF in long mode */ #define X86_FEATURE_CMP_LEGACY (6*32+ 1) /* If yes HyperThreading not valid */ -#define cpu_has(c, bit) \ - ((__builtin_constant_p(bit) && (bit) < 32 && \ - (1UL << (bit)) & REQUIRED_MASK1) ? \ - 1 : \ - test_bit(bit, (c)->x86_capability)) +#define cpu_has(c, bit) \ + (__builtin_constant_p(bit) && \ + ( (((bit)>>5)==0 && (1UL<<((bit)&31) & REQUIRED_MASK0)) || \ + (((bit)>>5)==1 && (1UL<<((bit)&31) & REQUIRED_MASK1)) || \ + (((bit)>>5)==2 && (1UL<<((bit)&31) & REQUIRED_MASK2)) || \ + (((bit)>>5)==3 && (1UL<<((bit)&31) & REQUIRED_MASK3)) || \ + (((bit)>>5)==4 && (1UL<<((bit)&31) & REQUIRED_MASK4)) || \ + (((bit)>>5)==5 && (1UL<<((bit)&31) & REQUIRED_MASK5)) || \ + (((bit)>>5)==6 && (1UL<<((bit)&31) & REQUIRED_MASK6)) ) \ + ? 1 : \ + test_bit(bit, (c)->x86_capability)) #define boot_cpu_has(bit) cpu_has(&boot_cpu_data, bit) #define cpu_has_fpu boot_cpu_has(X86_FEATURE_FPU) |