> Since virtio devices can live on two busses (sysbus with Syborg or PCI), > we need to introduce a set of virtio specific functions. >... > Inside the VirtIODevice, there would be corresponding function pointers, > and depending on whether it was a PCI device or a Syborg device, it would > call pci_memory_map or cpu_physical_memory_map.
You mean VirtIOBindings not VirtIODevice, right? Virtio devices should not be accessing guest memory directly, they should be using a virtqueue. Paul