From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Jan Beulich" <JBeulich@novell.com>
Subject: Re: PCI pass-through / MSI question: Is 30(hex)
	the lower limit for pirq?
Date: Fri, 28 May 2010 08:30:40 +0100
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To: Dante Cinco <dantecinco@gmail.com>, Xen-devel <xen-devel@lists.xensource.com>
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>>> On 28.05.10 at 01:29, Dante Cinco <dantecinco@gmail.com> wrote:
> I'm trying to bring up a Windows domU with PCI pass-through and it looks
> like Xen is running out of pirqs (see log below). I'm using Xen 4.0.0 =
and
> dom0 2.6.32.12 pv-ops and pci-stub to hide the PCIe device.
>=20
> It looks like the first available pirq is 4e(hex) and the last available =
is
> 30(hex) and after that, Xen returns an msix error. What's the consequence=
 of
> running out of pirqs?

Did you try the extra_guest_irqs=3D Xen command line option to
increase the number of PIRQs (defaulting to 32) for the guest?

Jan