From: "Jan Beulich" <JBeulich@novell.com>
To: Dante Cinco <dantecinco@gmail.com>,
Xen-devel <xen-devel@lists.xensource.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 [thread overview]
Message-ID: <4BFF8D4002000078000046F0@vpn.id2.novell.com> (raw)
In-Reply-To: <AANLkTikEUhzPi-VcT1xT6ADhj86f0vDldcP9nZy6ue2C@mail.gmail.com>
>>> 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.
>
> 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= Xen command line option to
increase the number of PIRQs (defaulting to 32) for the guest?
Jan
next prev parent reply other threads:[~2010-05-28 7:30 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-27 23:29 PCI pass-through / MSI question: Is 30(hex) the lower limit for pirq? Dante Cinco
2010-05-28 7:30 ` Jan Beulich [this message]
2010-05-28 8:50 ` Pasi Kärkkäinen
2010-05-28 20:51 ` Dante Cinco
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