RFC: Simplfying hyperthreading distinctions

John Baldwin jhb at freebsd.org
Fri Mar 13 18:31:09 UTC 2015


On Friday, March 06, 2015 03:45:13 PM Adrian Chadd wrote:
> Hi!
> 
> Hm, I looked at this:
> 
> https://en.wikipedia.org/wiki/Bonnell_%28microarchitecture%29
> 
> .. and thought it was old-school HTT. If it's not old-school HTT then cool.

It is not.  The SDM manuals explicitly differentiate Atom CPUs from Pentium 4
when talking about HTT (oddly they don't really mention Core-based CPUs I
believe because new HTT first showed up in Atoms and they never bothered to
update that part of the SDM?).

-- 
John Baldwin


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