panic: probing for non-PCI bus

John Baldwin jhb at
Thu Nov 20 08:32:08 PST 2003

On 20-Nov-2003 Morten Rodal wrote:
> John Baldwin wrote:
>> On 11-Nov-2003 John Hay wrote:
>>> Upgrading a Asus P2L97-DS dual Pentium II 266MHz box, I got this panic
>>> when booting:
> I have the exact same motherboard, only I run with dual Pentium II 300MHz.
> However I run a beta bios (to support ata disks larger than 32GB) that I 
> got from Asus many years ago.
> I am using this system as my workstation at home, and it does have an 
> AGP slot (with an nvidia card in).  ACPI has worked before, and it still 
> does except is fires off about 40000 interrupts (on IRQ20).
> However I'll have to wait until I get home to provide acpidumps and 
> mptables when I get home.
>> Oof, no MADT table.  Your BIOS sucks. :-P  Don't use ACPI because PCI interrupts
>> aren't going to work otherwise.  Does this system have an AGP slot?  Also, do
>> you have a dmesg from before?
> If I remember correctly I do not have a MADT table either, but ACPI did 
> find the CPUs.  We/I'll know more when I get home.

acpu_cpu is not the same thing as CPUs listed in the MADT.  If
there is no MADT, then FreeBSD won't find any APICs and won't be
able to trust ACPI PCI interrupt routing.  In fact, ACPI will still
be trying to route interrupts to the ATPICS, and not to the APICs if
the MADT isn't found and used.


John Baldwin <jhb at>  <><
"Power Users Use the Power to Serve!"  -

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