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Date: Tue, 10 Apr 2001 17:13:03 +0200 (CEST)
From: =?ISO-8859-1?Q?G=E9rard_Roudier?= <groudier@club-internet.fr>
To: Jim Studt <jim@federated.com>
cc: Alan Cox <alan@lxorguk.ukuu.org.uk>, linux-kernel@vger.kernel.org
Subject: Re: aic7xxx and 2.4.3 failures - fix, it is interrupt routing
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On Mon, 9 Apr 2001, Jim Studt wrote:

> G*rard Roudier insightfully opined..
> > Looks like an IRQ problem to me.
> > I mean the kernel wants to change IRQ routing and just do the wrong job.
> 
> Give the man a prize!  
> 
> After failing to work with 2.4.0, 2.4.1, 2.4.3, and 2.4.3-ac3 I
> enabled X86_UP_IOAPIC to stir up the interrupt code and it works.
> 
> I'll keep one of these servers set aside for testing and see if I can't
> figure out a little more specifically what the problem is, but IOAPIC
> is fine.  

Probably because the code that messes with IRQs isn't involved when IOAPIC
is used. If I had to guess I would point "arch/i386/kernel/pci-irq.c",
function "pcibios_lookup_irq()".

  G?rard.

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