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Re: [Xen-devel] Bug in PCI Passthrough

To: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Subject: Re: [Xen-devel] Bug in PCI Passthrough
From: Josef Vogt <josef.vogt@xxxxxxxxxx>
Date: Wed, 20 Apr 2011 21:16:31 +0200
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Am 20.04.2011 14:51, schrieb Konrad Rzeszutek Wilk:
On Wed, Apr 20, 2011 at 11:15:23AM +0200, Josef Vogt wrote:
Hello all

I tried to enable PCI Passthrough in my Debian Squeeze installation.
Unfortunately, it didnt work. The following bug showed up (excerpt
from dmesg):

[ 10.148612] uhci_hcd 0000:00:14.2: PCI INT D -> Link[LNKD] -> GSI 11
(level, low) -> IRQ 11
[ 4.678352] Failed to setup GSI :11, err_code:-22
[ 4.678480] dmfe 0000:00:0e.0: PCI INT A -> Link[LNKB] -> GSI 11 (level,
low) -> IRQ 11
[ 6.868419] Failed to setup GSI :10, err_code:-22
That is most strange. Your interrupts are below IRQ 16, and they are level?
They should have been edge, unless you have some strange machine.

Hm... it's a rather old one: Compaq Deskpro PD1006 (Pentium III) 
If you don't pass in the card to the DomU, but run it under Dom0, what is
the GSI and /proc/interrupts for the dmfe?
/proc/interrupts for dmfe in Dom0 (card is up and running, I disabled the other):
cat /proc/interrupts | grep eth
11:        893  xen-pirq-xt-pic    uhci_hcd:usb1, eth0

GSI: I'm not so sure what you mean but this must be GSI 11 (see above or dmesg in attachment)
Can you also attach the full serial output? (so we can see the Xen hypervisor output
and the Linux Dom0 output).
This is what i get (see attached logs)

Attachment: console.log
Description: Text Data

Attachment: dmesg
Description: Text document

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