Dual core CPUs support

[Gary Jennejohn]

Bruce Burden writes:
> On Wed, Dec 21, 2005 at 09:12:22PM +0100, Tomas Randa wrote:
> > Hello all friends of FreeBSD unix,
> > 
> > I?d like to ask here, what is the actual situation with dual core CPUs - 
> > Athlon 64 X2 etc. and their functionality with FreeBSD 5.X / 6.X / 7.0 
> > current.
> >
> > I tried 5.4/i386 with options  SMP, 6.0/i386 with the same config, in 
> > both cases system found only one CPU, but on 5.4 system wrote HTT 2 
> > logical units.
> > 
> 	The i386 version disables HTT by default (see the security
>    notices for summer 2005 or thereabouts), so I am not surprised that
>    your second core is ignored/not reported. There is a switch that
>    will enable the HTT (second core, in your case) if you wish.
> 
> 	As another poster mentiond, the AMD64 version of FBSD will
>    recognise the second core as expected.
> 

HTT has nothing to do with recognizing an X2 AMD64. I've been running
i386 since before 6R and FreeBSD has always seen both cores.

Maybe the OP needs a new BIOS. I had to update my BIOS before the X2 was
correctly recognized.

---
Gary Jennejohn / garyjATjennejohnDOTorg gjATfreebsdDOTorg garyjATdenxDOTde