Broken MP table detected ...

John Baldwin jhb at FreeBSD.org
Wed Sep 21 13:44:25 PDT 2005


On Monday 19 September 2005 08:55 pm, Scott Long wrote:
> Wilkinson, Alex wrote:
> > Can anyone tell me what the following means, and how to fix it:
> >
> >     APIC_IO: Testing 8254 interrupt delivery
> >     APIC_IO: Broken MP table detected: 8254 is not connected to IOAPIC #0
> > intpin 2 APIC_IO: routing 8254 via 8259 and IOAPIC #0 intpin 0
> >
> >  - aW
>
> It means that you need to use 6.0 instead of 5.x =-)  It represents the
> old way that we connected the timecounters, which apparently isn't well
> supported with newer amd64 boards.  6.0 solves this problem by using a
> better supported mechanism.

Actually, this is a 4.x method and it basically means that it has fallen back 
to mixed mode for IRQ0.  6.0 certainly does this better.  5.x just uses mixed 
mode by default.

-- 
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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