Re: [PATCH] ix86,x86_64 cpu features

Jeff Garzik
2004-08-25T00:48:40Z

Linux Kernel Mailing List wrote:
> diff -Nru a/include/asm-x86_64/cpufeature.h b/include/asm-x86_64/cpufeature.h
> --- a/include/asm-x86_64/cpufeature.h 2004-08-24 15:34:02 -07:00
> +++ b/include/asm-x86_64/cpufeature.h 2004-08-24 15:34:02 -07:00
> @@ -63,8 +63,14 @@
> #define X86_FEATURE_K8_C (3*32+ 4) /* C stepping K8 */
>
> /* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */
> -#define X86_FEATURE_EST (4*32+ 7) /* Enhanced SpeedStep */
> +#define X86_FEATURE_XMM3 (4*32+ 0) /* Streaming SIMD Extensions-3 */
> #define X86_FEATURE_MWAIT (4*32+ 3) /* Monitor/Mwait support */
> +#define X86_FEATURE_DSCPL (4*32+ 4) /* CPL Qualified Debug Store */
> +#define X86_FEATURE_EST (4*32+ 7) /* Enhanced SpeedStep */
> +#define X86_FEATURE_TM2 (4*32+ 8) /* Thermal Monitor 2 */
> +#define X86_FEATURE_CID (4*32+10) /* Context ID */
> +#define X86_FEATURE_CX16 (4*32+13) /* CMPXCHG16B */
> +#define X86_FEATURE_XTPR (4*32+14) /* Send Task Priority Messages */

FYI, the style for cpufeature.h is to _not_ add constants for a feature
bit unless that feature is actually used.

Jeff, one of the people who last touched this area of code