Glossary

Control Domain

A domain that manages virtualization policies.

Root Domain

A domain that manages the PCIe fabric.

IO Domain

A domain that has exclusive access to IO devices assigned to it.

Fabric

PCIe fabric components such as root-complexes, root-ports, switches, bridges; configuration space registers of endpoints

VM

Virtual Machine

PCI Device (PCI Component)

• Single or multiple PCI functions

• Usually one piece of silicon

PCI Function

• Smallest independent addressable unit in a PCI fabric

• One set of PCI configuration space registers

PCI Virtual Function

• Lightweight PCI function in hardware

• Looks almost the same as PCI function to software