Dear George please find attached the three files as requested. I have used iommu=soft
in the grub command line for the kernel in the domU as explained before. many thanks Francis
From: "George Dunlap" dunlapg@umich.edu To: "francis" francis@choughs.net, "centos-virt" centos-virt@centos.org Sent: Monday, 16 May, 2016 10:29:09 Subject: Re: [CentOS-virt] PCI Passthrough not working
On Thu, May 12, 2016 at 12:11 PM, Francis Greaves francis@choughs.net wrote:
I am running Xen 4.6 on CentOS 7 in a Dell Poweredge T430 I need PCI Passthrough to get USB working. I am following the Xenproject Wiki I have enabled the Virtulasation in the BIOS. I have xen_pciback as a module I have issued the command:
xl pci-assignable-add 00:1a0.0 and it shows up fine when I issue this xl pci-assignable-list
I have pci=['00:1a.0'] on the DomU config file I have added this iommu=soft and swiotlb=force both together and separately to the kernel command line in the DomU (running Debian 8), but I get the same error each time.
libxl: error: libxl_pci.c:999:do_pci_add: xc_assign_device failed: Operation not permitted libxl: error: libxl_create.c:1424:domcreate_attach_pci: libxl_device_pci_add failed: -3
Can you please attach the following: 1. The complete domU config file 2. A complete log of the command and all the output 3. The full output of "xl dmesg" just after you run the command
Thanks, -George