On Mon, 2013-10-14 at 11:46 +0100, Michael S. Tsirkin wrote: > What I meant is that under the proposed scheme, users with > existing v1 drivers must configure a v1 device explicitly. > > According to the plan, drivers will be updated so they can > work with both v1 devices and new v2 devices. > > But if you configure a v2 device, old drivers > will not work. That's correct, yes. If qemu 2015(16? 17?).01 will provide v2 devices only, kernel 3.11 is not going to recognize any of them. What will happen in reality, though, is that the implementation of the Linux v1/v2 driver will pre-date *any* v2 device by far. First implementation of v1 devices appeared almost 2 years after the driver appeared. It will take year for people to upgrade to v2, and probably only after they experience problems with page-based addressing mode. I think I can live with this. Paweł -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
