Weird PCI interrupt delivery problem (resolution, sort of)

John Baldwin jhb at freebsd.org
Fri Jan 20 13:05:27 PST 2006


On Friday 20 January 2006 10:27, Craig Boston wrote:
> On Thu, Jan 19, 2006 at 10:17:39PM -0700, Scott Long wrote:
> > This points to a bus coherency problem.  I wonder if your BIOS is
> > incorrectly setting the memory region of the apics as cachable.  You'll
> > want to bug Baldwin about this.
>
> I CC-ed him on my post since he was working with me on the problem
> before.  For some reason the Cc: header got wiped out when it went to
> the list (but I checked my server logs and it did deliver a copy of the
> message to him).

Hmm, well, you can actually try the PAT patch if you are feeling brave as it 
maps all devices (including APICs) as uncacheable.

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


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