15.3. PCI passthrough with virt-install
To use PCI passthrough with the virt-install parameter, use the additional
Identify the PCI deviceIdentify the PCI device designated for passthrough to the guest. The
virsh nodedev-listcommand lists all devices attached to the system. The
--treeoption is useful for identifying devices attached to the PCI device (for example, disk controllers and USB controllers).
# virsh nodedev-list --treeFor a list of only PCI devices, run the following command:
# virsh nodedev-list | grep pciEach PCI device is identified by a string in the following format (where 8086 is a variable that in this case represents Intel equipment, and **** is a four digit hexadecimal code specific to each device):
lspci -n(which turns off name resolution) output can assist in deriving which device has which device identifier code.
Add the deviceUse the PCI identifier output from the
virsh nodedevcommand as the value for the
# virt-install \ -n hostdev-test -r 1024 --vcpus 2 \ --os-variant fedora11 -v --accelerate \ -l http://download.fedoraproject.org/pub/fedora/linux/development/x86_64/os \ -x 'console=ttyS0 vnc' --nonetworks --nographics \ --disk pool=default,size=8 \ --debug --host-device=pci_8086_10bd
Complete the installationComplete the guest installation. The PCI device should be attached to the guest.