PCI pass-through

Dom0 CLI
========
[root@xen-home ~]# cat /etc/modprobe.d/pciback.conf
install e1000 /sbin/modprobe xen_pciback ; /sbin/modprobe --first-time --ignore-install e1000
options xen-pciback hide=(01:0a.*)

[root@xen-home ~]# lspci -kD | tail -6
0000:01:0a.0 Ethernet controller: Intel Corporation 82546EB Gigabit Ethernet Controller (Copper) (rev 01)
	Subsystem: Compaq Computer Corporation NC7170 Gigabit Server Adapter
	Kernel driver in use: pciback
0000:01:0a.1 Ethernet controller: Intel Corporation 82546EB Gigabit Ethernet Controller (Copper) (rev 01)
	Subsystem: Compaq Computer Corporation NC7170 Gigabit Server Adapter
	Kernel driver in use: pciback

[root@xen-home ~]# xl dmesg | grep virtual
(XEN) I/O virtualisation disabled

[root@xen-home ~]# dmesg | grep -i seiz
pciback 0000:01:0a.0: seizing device
pciback 0000:01:0a.1: seizing device

[root@xen-home ~]# xl pci-assignable-list
0000:01:0a.0
0000:01:0a.1

[root@xen-home ~]# cat /etc/libvirt/libxl/ubuntu.xml
...
  <hostdev type='pci' managed='yes' mode='subsystem'>
    <source>
      <address domain='0x0000' bus='0x01' slot='0x0a' function='0x0' />
    </source>
  </hostdev>
...

DomU CLI
========
eric@ubuntu:~$ cat /proc/cmdline
root=/dev/mapper/ubuntu-root ro iommu=soft  quiet splash

eric@ubuntu:~$ sudo lspci -v

eric@ubuntu:~$ sudo lsmod
Module                  Size  Used by4-generic (buildd@brownie) (gcc version 4.4.3 (Ubuntu 4.4.3-4ubuntu5.1) ) #142-Ubuntu SMP Tue Apr 28 10:03:02 UTC 2015 (Ubuntu 2.6.32-74.14sha256_generic         10327  2
cryptd                  8148  0 t=/dev/mapper/ubuntu-root ro iommu=soft  quiet splash
aes_x86_64              7912  7 cpus:
aes_generic            27607  1 aes_x86_64
dm_crypt               13043  1 D
ppdev                   6375  0 Hauls
lp                      9336  0 ged domain disabled
parport                37160  2 ppdev,lpM map:
xen_netfront           17890  0 00000 - 00000000000a0000 (usable)
xen_blkfront           10697  3 a0000 - 0000000000100000 (reserved)