[CentOS-virt] PCI Passthrough not working

George Dunlap

dunlapg at umich.edu
Mon Jul 4 12:17:57 UTC 2016

On Sun, Jul 3, 2016 at 12:34 PM, Francis Greaves <francis at choughs.net> wrote:
> ________________________________
> From: "Francis Greaves" <francis at choughs.net>
> To: "Francis Greaves" <francis at choughs.net>, "centos-virt"
> <centos-virt at centos.org>
> Sent: Sunday, 3 July, 2016 11:19:49
> Subject: Re: [CentOS-virt] PCI Passthrough not working
> Further to my last post, I have removed the xen-pciback module from the Dom0
> kernel, and reloaded it as
> modprobe xen-pciback passthrough=1
> I now have the PCI device on the DomU matching the Dom0 Device
> usb usb1: SerialNumber: 0000:00:1a.0
> instead of 0000:00:00.0
> However I now have this error
> ehci_hcd 0000:00:1a.0: Unlink after no-IRQ?  Controller is probably using
> the wrong IRQ.
> does this give a clue as to what is going on?


Thanks for posting with the extra info.  Could you now also re-post it
to the xen-users mailing list, as I asked, so that more people can get
a look at what you're doing?

Thanks. :-)


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