Re: Programtically tell diff between HT and real

[lkml]

> Is there a way to tell the difference between normal
> processors and HT enabled processors?  That is, does
> the linux kernel know the difference and is there a
> way to to know the difference.

Execute the CPUID instruction with EAX=00000001h. I think HT-enabled cpus
should have bit 28 of the value returned in EDX set.

-- 
 7:57PM  up 134 days,  5:11, 1 user, load averages: 0.16, 0.18, 0.16

Every non-empty totally disconnected perfect compact metric space is
homeomorphic to the Cantor set.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/