The dynamic PCIe bus assignment feature enables you to dynamically assign a PCIe bus to or remove a PCIe bus from a root domain. The dynamic PCIe bus assignment feature is enabled when your system runs the required firmware and software. If your system does not run the required firmware and software, the ldm add-io and ldm remove-io commands fail gracefully. When enabled, you can run the ldm add-io and ldm remove-io commands without stopping the root domain or putting the root domain in delayed reconfiguration.
Dynamic PCIe bus assignment has these restrictions:
PCIe bus containing rKVMS devices is restricted to the primary domain only. This is enforced by the Logical Domains Manager.
Direct I/O is not supported. All PCIe slots are directly connected to a PCIe root port.