RE: [PATCH] fix PCI interrupt setting for ia64

From: Kenji Kaneshige
Date: Wed Mar 10 2004 - 19:32:32 EST


Hi,

I'm sorry that the report falls behind. I wanted to check out by using
real device driver which uses a probe_irq_on(), but I don't have appropriate
environment now.

Though I didn't check out on a real machine yet, I believe my patch doesn't
have any influence on probe_irq_on() because current probe_irq_on() calls
startup callback to unmask the RTEs as you said before.

Regards,
Kenji Kaneshige

> -----Original Message-----
> From: linux-ia64-owner@xxxxxxxxxxxxxxx
> [mailto:linux-ia64-owner@xxxxxxxxxxxxxxx]On Behalf Of David Mosberger
> Sent: Thursday, March 11, 2004 5:10 AM
> To: Kenji Kaneshige
> Cc: linux-ia64@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx
> Subject: Re: [PATCH] fix PCI interrupt setting for ia64
>
>
> Kenji,
>
> Sorry, I lost track of the status of this patch. Has it been checked
> out OK with respect to interrupt probing?
>
> --david
>
> >>>>> On Mon, 08 Mar 2004 11:49:10 +0900, Kenji Kaneshige
> <kaneshige.kenji@xxxxxxxxxxxxxx> said:
>
> Kenji> Hi, In ia64 kernel, IOSAPIC's RTEs for PCI interrupts are
> Kenji> unmasked at the boot time before installing device drivers. I
> Kenji> think it is very dangerous. If some PCI devices without
> Kenji> device driver generate interrupts, interrupts are generated
> Kenji> repeatedly because these interrupt requests are never
> Kenji> cleared. I think RTEs for PCI interrupts should be unmasked
> Kenji> by device driver.
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