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Date: Fri, 20 May 2005 11:09:04 -0600
From: Scott Long <scottl@samsco.org>
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cc: Pav Lucistnik <pav@freebsd.org>
cc: freebsd-amd64@freebsd.org
Subject: Re: FreeBSD on dual core Opterons - stupid buildworld test
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David O'Brien wrote:

> On Thu, May 19, 2005 at 06:47:05PM +0200, Attila Nagy wrote:
> 
>>David O'Brien wrote:
>>
>>>I'm taking care of this.  Please no one commit any AMD Dual-core related
>>>patches (especially WRT HTT) with out passing them by me.
>>
>>Do you have any preliminary patches? Access to hardware?
> 
> 
> Yes I have hardware - since March.
> 
> Everyone should note that difference of dual-core vs. single core doesn't
> matter one bit for FreeBSD.  We don't have NUMA support, which is what is
> required to care about the difference between 1x dual-core & 2x
> single-core (or 2x dual-core & 4x single-core) Opteron.
> 
> For 6.0-RELEASE (which branches June 1, 2005), I'm going to just have the
> kernel ignore that dual-core Opteron sets the HTT feature flag.
> 

Note, 6.0-RELEASE does not happen on June 1.  That is the date where we 
shift out of crazy development mode and into polishing mode.  Polishing 
would include making a CPU feature work correctly.

Scott