Re: [Xen-devel] PCI pass-through / MSI question: Is 30(hex) the lower limit for pirq?

["Jan Beulich" <JBeulich@xxxxxxxxxx>]

>>> On 28.05.10 at 01:29, Dante Cinco <dantecinco@xxxxxxxxx> 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


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