Unable to install 8.x on a PowerEdge R810

[Sean Bruno]

On Thu, 2010-07-22 at 17:51 -0700, Chuck Swiger wrote:
> Hi, Mahlon--
> 
> On Jul 22, 2010, at 5:36 PM, Mahlon E. Smith wrote:
> > Install worked great, though it appears I need to keep hyperthreading
> > ("logical processors" bios option) disabled for it to boot reliably.
> > Similar errors as before if I enable it.
> 
> I believe FreeBSD ships with MAXCPU set to 32 by default (check "sysctl kern.smp.maxcpus"); your machine with hyperthreading enabled probably goes past that #, which is why it crashes with the topology error being reported....
> 
> Regards,

Kind of a large patch, but in order to make an omlette, you need to
break a few servers.

This is a diff against -CURRENT, not stable-8 as I didn't get a chance
to test it.  It is directly based off of changes that peter@ made to the
Yahoo FreeBSD 7 tree.

I have compile and boot tested this on my local machines, but I don't
have 64 CPU machines to test upon.

Sean
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