can be specified without providing a base address, which simplifies
user configuration
</li>
+ <li>qemu: Express devices will be placed on PCIe bus by default<br/>
+ For machine types that use a PCI Express root bus
+ (e.g. x86_64/Q35 and aarch64/virt), any unaddressed PCI
+ device that is an Express device (all virtio-1.0 devices,
+ e1000e, nec-xhci, vfio assigned devices) will be placed on
+ an Express controller (i.e. a pcie-root-port) instead of a
+ legacy PCI controller (i.e. pci-bridge) with the root ports
+ added as needed
+ </li>
</ul>
</li>
<li><strong>Improvements</strong>