On 09/03/2017 00:59, Michael S. Tsirkin wrote: > Allow forcing a specific order of initialization on > devices created with -device. > Helpful e.g. for built-in devices such as IOMMUs which must > exist before all other devices. > > Signed-off-by: Michael S. Tsirkin <m...@redhat.com> > --- > > Looks like we have a ton of problems because devices > are initialized in a random order, while we > really want e.g. iommu to be initialized > earlier than devices. > > This will be helpful for other things, e.g. > real hardware often is initialized in a specific order, > creating built-in devices for the board often > has to happen in a specific order, etc.
In the specific case of PCI bus_master_as there is a simple workaround by placing a dummy container (which lets us build the AddressSpace) and then adding the alias region at machine_done time. This is exactly how MemoryListener is supposed to work, so I would start from there. Paolo
