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Date: Sat, 18 Jan 2003 18:27:00 -0800
From: William Lee Irwin III <wli@holomorphy.com>
To: Zwane Mwaikambo <zwane@holomorphy.com>
Cc: linux-kernel@vger.kernel.org, zwane@linuxpower.ca, zab@zabbo.net,
       manfred@colorfullife.com, macro@ds2.pg.gda.pl, Martin.Bligh@us.ibm.com,
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Subject: Re: 48GB NUMA-Q boots, with major IO-APIC hassles
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On Sat, 18 Jan 2003, William Lee Irwin III wrote:
>> +int vector_to_irq[MAX_NUMNODES][FIRST_SYSTEM_VECTOR - FIRST_DEVICE_VECTOR + 1];

On Sat, Jan 18, 2003 at 09:13:36PM -0500, Zwane Mwaikambo wrote:
> This can never work by looking at the I/O interrupt section of your MP 
> table you're overwriting interrupt gates. Therefore this has the 
> unfortunate effect of invalidating the rest of the patch.
> Consider this; If you have irq 8 on both ioapic0 and ioapic3 who gets the 
> vector setup in the IDT?

Neither. The patch pushes the _real_ vector number and translates it to
a software interrupt number with table lookup, which includes the node ID.


Bill
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