From owner-freebsd-smp  Tue Feb  4 11:37: 4 2003
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Date: Tue, 4 Feb 2003 11:36:59 -0800 (PST)
From: Julian Elischer <julian@elischer.org>
To: John Baldwin <jhb@FreeBSD.org>
Cc: freebsd-smp@freebsd.org, Chris Luke <chrisy@flix.net>,
	Brendon and Wendy <brendy33@attbi.com>,
	Terry Lambert <tlambert2@mindspring.com>
Subject: Re: mp_machdep.c patch
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On Tue, 4 Feb 2003, John Baldwin wrote:

> 
> On 04-Feb-2003 Julian Elischer wrote:
> > 
> > 
> > On Mon, 3 Feb 2003, Terry Lambert wrote:
> > 
> >> 
> >> You have to enable HT in the BIOS.  If it is not enabled in the
> >> BIOS, it will not add entries to the MP Table for the virtual
> >> processors, and they will not be recognized.
> > 
> > 
> > My new MP systemm at work (soon to ship to a custommer.. (rats..))
> > is running -stable as of today..
> > even when I turn off Hyperthreading in the bios,
> > FreeBSD still finds and uses the extra 2 CPUs..
> > (i.e it looks as if it has 4 instead of 2)
> > 
> > Nothing I can do will force freeBSD to run with only 2 CPUs.
> 
> Correct, BIOS settings have no effect on whether or not
> FreeBSD "sees" HTT CPUs.

Can we have a way of 'nobbling' certain cpus?
e.g. don't use "#1 and #3?"


> 
> -- 
> 
> John Baldwin <jhb@FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
> "Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/
> 
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