Re: [Xen-users] Question about USB passthrough in HVM guest domain

[jacek burghardt <jaceksburghardt@xxxxxxxxx>]

The card is assigned only to one guest and it is unavailable to others. I would read this http://wiki.xen.org/wiki/Xen_VGA_Passthrough

and http://wiki.xen.org/wiki/XenUSBPassthrough

I guess there should be a patch that allows for sharing keyboard mouse

On Tue, Jun 3, 2014 at 1:53 PM, Meng Xu <xumengpanda@xxxxxxxxx> wrote:

Hi Jacek,

Thank you very much for your quick reply!

âI have one more question.â

IÂjust buy separate pci usb card and I pass that. There is no way to share usbÂbetween domu and dom0 ÂÂ

âIf I buy a separate pci usb card and pass the pci controller to dom1. Can the same pci controlled be passed to dom2 at the same time?Â

In other words, can the same pci usb controller âpassed to more than one guest domain at the same time?

(I know the same pci usb controller cannot be used by dom0 and dom1 at the same time but not sure if it can be used by two guest domains or not.)

Thanks,

Meng

Â

On Tue, Jun 3, 2014 at 1:19 PM, Meng Xu <xumengpanda@xxxxxxxxx> wrote:

Hi Jacek,

Thank you very much for your replies! I tried to passing the whole usb controller before by using the PCI passthrough. However, after I pass throught the whole usb controller, I can no longer use keyboard and mouse in dom0. Is there anyway that I can use the usb devices in dom0 after I passthough the whole usb controller?

Thanks,

Meng Â

2014-06-03 15:14 GMT-04:00 jacek burghardt <jaceksburghardt@xxxxxxxxx>:

I don't thing the whole passing of usb devices is well supported under xen. I always pass whole usb controller. I wonder if you can get pci or epic usb controller and pass it

--

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Meng Xu
PhD Student in Computer and Information Science
University of Pennsylvania

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Meng Xu
PhD Student in Computer and Information Science
University of Pennsylvania

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