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15.4. Removing a PCI passthrough device for host re-use
Perform the following steps to remove a PCI passthrough device so that the host regains full access to the device:
List all PCI devices
For a list of only PCI devices, run the following command:# virsh nodedev-list | grep pci
Each 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):pci_8086_****
Note
Comparinglspcioutput tolspci -n(which turns off name resolution) output can assist in deriving which device has which device identifier code.Remove and re-attach the device
After removing the device either from the guest XML file or virt-manager, run thevirsh nodedev-reattachcommand to return its use to the host, substituting your PCI device name that is designated for removal:# virsh nodedev-reattach pci_8086_3a6c
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