[CentOS-virt] PCI Passthrough not working

Wed Jun 22 09:56:44 UTC 2016
Francis Greaves <francis at choughs.net>

Further to my messages back in May I have at last got round to trying to get my DomU to recognise USB devices. 

I am using Xen 4.6 with CentOS kernel 3.18.34-20.el7.x86_64. 
I have to manually make the port available before creating the DomU by issuing the command: 
xl pci-assignable-add 00:1a.0 
otherwise nothing shows in: 
xl pci-assignable-list 

I have added this to my .cfg file as per the May Emails: 

and in the DomU, which starts fine, I get the following information: 
00:00.0 USB controller: Intel Corporation Wellsburg USB Enhanced Host Controller #2 (rev 05) 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub 

However when I plug in a device to this USB port (Am sure it is the correct port in the Dom0) I see nothing in the DomU at all. 

What can I do now? 
Many thanks 
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