Re: [Xen-devel] Re: [GIT PATCH v2 0/14] xen: events: cleanups +ween off nr_irqs

[Konrad Rzeszutek Wilk]

> I am having difficulties with passthrough of an USB device. Somehow the
> irq count is not going up at all (both in dom0 and domU) and it looks to
> be doing just simple polling. I've rebased the xen-pciback to be on top
> of your changes and apply cleanly. The whole lot is now in #master

I think your patchset breaks the 'xc_physdev_map_pirq' call. Looks like
libxl_pci.c reads from /sys/bus/pci/devices/<BDF>/irq to figure out what value
to pass. With these patches we wouldn't neccessarily pass in the right
PIRQ value. Any ideas?

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