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Date: Fri, 23 Jun 2006 10:04:23 -0700
From: Steve Kargl <sgk@troutmask.apl.washington.edu>
To: "Matthew D. Fuller" <fullermd@over-yonder.net>
Message-ID: <20060623170423.GA92531@troutmask.apl.washington.edu>
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Cc: freebsd-amd64@freebsd.org
Subject: Re: SMP system not running SMP
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On Fri, Jun 23, 2006 at 11:58:33AM -0500, Matthew D. Fuller wrote:
> On Fri, Jun 23, 2006 at 06:07:22AM -0500 I heard the voice of
> Peter Seebach, and lo! it spake thus:
> > 
> > There are two possible paths to fixing this:  One is to make SMP
> > work without ACPI.
> 
> One thing to note is that in the dmesg you posted, there's no "ioapic"
> probed.  That suggests it's not really finding the APIC, which would
> be why SMP is failing.  It'd be getting that from ACPI normally, but
> AIUI (I'm way out of my depth here) it could find them in other ways.
> I vaguely recall somebody (John Baldwin, maybe?) doing something in
> this area of ways of enumerating CPU's/APIC's in the last 6
> monthsish...
> 

I think you may be recalling the atpic device.

device          atpic                   # Optional legacy pic support

-- 
Steve