RE: interrupts across PCI bridge(s) not handled

["Charles Martin" <martinc@ucar.edu>]

> -----Original Message-----
> From: Linus Torvalds [mailto:torvalds@osdl.org] 
> Sent: Monday, November 03, 2003 1:23 PM
> To: Charles Martin
> Cc: linux-kernel@vger.kernel.org; martinc@atd.ucar.edu
> Subject: RE: interrupts across PCI bridge(s) not handled
> 
> 
> 
> On Mon, 3 Nov 2003, Charles Martin wrote:
> > 
> > I enabled APIC_DEBUG, and here is the dmesg output.
> 
> Hmm..
> 
> The MP tables mention IRQ's up to 51, but no further.
> 
> But the PIRQ routing tables talk about irqs 92-95 for bus 6.
> 
> It really looks like the IRQ routing entries are just broken. One 
> potential fix is to enable ACPI, and hope that the ACPI irq 
> routing isn't 
> as broken as the PIRQ stuff.
> 
> Other than that I don't see anything we can do. Anybody else?
> 
> 		Linus
> 
> 

I do notice that bus #6, which is the backplane extender,
has an APIC id of 0, but an APIC #0 was not enumerated. All other
buses get assigned to the identified APICs of 8, 9 and 10. 

Charlie