<html><body><div style="font-family: Andale Mono; font-size: 12pt; color: #666666"><div>More information...<br data-mce-bogus="1"></div><div>I have pcifront showing as a module in the DomU and the usb shows in dmesg as:<br data-mce-bogus="1"></div><div>[ 3.167543] usbcore: registered new interface driver usbfs<br>[ 3.167563] usbcore: registered new interface driver hub<br>[ 3.167585] usbcore: registered new device driver usb<br>[ 3.196056] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002<br>[ 3.196060] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1<br>[ 3.196064] usb usb1: Product: EHCI Host Controller<br>[ 3.196068] usb usb1: Manufacturer: Linux 3.2.0-4-686-pae ehci_hcd<br>[ 3.196071] usb usb1: SerialNumber: 0000:00:00.0<br>[ 3.508036] usb 1-1: new high-speed USB device number 2 using ehci_hcd<br>[ 19.064072] usb 1-1: device not accepting address 2, error -110<br>[ 19.176070] usb 1-1: new high-speed USB device number 3 using ehci_hcd<br>[ 34.732067] usb 1-1: device not accepting address 3, error -110<br>[ 34.844082] usb 1-1: new high-speed USB device number 4 using ehci_hcd<br>[ 45.280073] usb 1-1: device not accepting address 4, error -110<br>[ 45.392067] usb 1-1: new high-speed USB device number 5 using ehci_hcd<br>[ 55.824112] usb 1-1: device not accepting address 5, error -110<br></div><div><br data-mce-bogus="1"></div><div>I am looking at xl dmesg in Dom0 where there are some messages relating to the PCI usb:<br></div><div>[VT-D] It's disallowed to assign 0000:00:1a.0 with shared RMRR at 7b800000 for Dom6.<br>(XEN) XEN_DOMCTL_assign_device: assign 0000:00:1a.0 to dom6 failed (-1)<br>(XEN) [VT-D] It's risky to assign 0000:00:1a.0 with shared RMRR at 7b800000 for Dom7.<br>(XEN) [VT-D] It's risky to assign 0000:00:1a.0 with shared RMRR at 7b800000 for Dom8.<br>(XEN) [VT-D] It's risky to assign 0000:00:1a.0 with shared RMRR at 7b800000 for Dom9.<br>(XEN) [VT-D] It's risky to assign 0000:00:1a.0 with shared RMRR at 7b800000 for Dom10.<br></div><div><br data-mce-bogus="1"></div><div>In the <br data-mce-bogus="1"></div><div>as an aside... I just get blocks on the screen after the scrubbing message, and no text. I see there is a message:<br data-mce-bogus="1"></div><div>(XEN) Xen is relinquishing VGA console.</div><div>How can I prevent this? Is there something wrong with my /etc/default/grub<br data-mce-bogus="1"></div><div><br data-mce-bogus="1"></div><div>...<br data-mce-bogus="1"></div><div>GRUB_CMDLINE_LINUX="crashkernel=auto intremap=no_x2apic_optout"<br>GRUB_CMDLINE_XEN_DEFAULT="dom0_mem=13312M,max:14336M dom0_max_vcpus=6 dom0_vcpus_pin"<br>GRUB_GFXMODE=1024x768<br>GRUB_GFXPAYLOAD_LINUX=keep<br>GRUB_CMDLINE_LINUX_XEN_REPLACE_DEFAULT="console=hvc0 earlyprintk=xen"<br></div><div><br></div><div>Many thanks<br data-mce-bogus="1"></div><div>Francis<br data-mce-bogus="1"></div><hr id="zwchr" data-marker="__DIVIDER__"><div data-marker="__HEADERS__"><b>From: </b>"Francis Greaves" <francis@choughs.net><br><b>To: </b>"centos-virt" <centos-virt@centos.org><br><b>Sent: </b>Wednesday, 22 June, 2016 09:56:44<br><b>Subject: </b>[CentOS-virt] PCI Passthrough not working<br></div><br><div data-marker="__QUOTED_TEXT__"><div style="font-family: Andale Mono; font-size: 12pt; color: #666666"><div>Further to my messages back in May I have at last got round to trying to get my DomU to recognise USB devices.<br></div><br><div>I am using Xen 4.6 with CentOS kernel 3.18.34-20.el7.x86_64.<br></div><div>I have to manually make the port available before creating the DomU by issuing the command:<br></div><div>xl pci-assignable-add 00:1a.0</div><div>otherwise nothing shows in:<br></div><div>xl pci-assignable-list<br></div><br><div>I have added this to my .cfg file as per the May Emails:<br></div><div>pci=['00:1a.0,rdm_policy=relaxed']</div><br><div>and in the DomU, which starts fine, I get the following information:<br></div><div>lspci<br>00:00.0 USB controller: Intel Corporation Wellsburg USB Enhanced Host Controller #2 (rev 05)<br>lsusb<br>Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub</div><br><div>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.<br></div><br><div>What can I do now?<br></div><div>Many thanks<br></div><div>Francis<br></div></div><br>_______________________________________________<br>CentOS-virt mailing list<br>CentOS-virt@centos.org<br>https://lists.centos.org/mailman/listinfo/centos-virt<br></div></div></body></html>