Date: Fri, 18 Jul 2008 13:59:12 +0100 (BST)
From: "Maciej W. Rozycki" <macro@linux-mips.org>
To: Vegard Nossum <vegard.nossum@gmail.com>
cc: Bjorn Helgaas <bjorn.helgaas@hp.com>, Ingo Molnar <mingo@elte.hu>,
       Alexey Starikovskiy <astarikovskiy@suse.de>,
       Thomas Gleixner <tglx@linutronix.de>, venkatesh.pallipadi@intel.com,
       Huang Ying <ying.huang@intel.com>, Andi Kleen <andi@firstfloor.org>,
       linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org
Subject: Re: v2.6.26-rc9: ACPI PCI irq routing on NUMA? + early_ioremap
 trouble
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On Fri, 18 Jul 2008, Vegard Nossum wrote:

> I have done this for the bad case:
> http://folk.uio.no/vegardno/linux/netconsole2.txt

 Thanks.  The MP table looks broken:

Bus #4 is ISA
I/O APIC #32 Version 32 at 0xFEC00000.
Int: type 3, pol 1, trig 1, bus 4, IRQ 00, APIC ID 2, APIC INT 00

etc. (notice the different I/O APIC IDs reported), so any changes to our
code are not at fault.  I suggest you ask your vendor to fix it up (did
they test it at all? -- it has no chance to work) or stick to ACPI (I can
see it has been automatically disabled for some reason).

 Anyway, the piece of I/O APIC code in question should not poke at the
local APIC, so I'll prepare a fix to make it check for the APIC ID being
-1.

> (I added a warning for certain APIC errors as well. Not that it adds
> much in this particular case, but I think it would be good to have in
> mainline anyway, to highlight these error cases in the future...)

 It might be useful indeed.

  Maciej
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