Hi, > BTW, in usb_release_port(), the detached port should be insert > the head of bus->free list table. Because of the save/restore will > cause qemu crash, after hot plug/hot unplug multi times. For example, > save the port '2' to memory file, but when we restore it, the port will > be assign to '1' over again, which not match with the memory file, > and then crash qemu.
If you want hotplug and live migration play well you have to explicitly assign devices ports, i.e. -device usb-host,port=2,$args Otherwise it will simply not work reliable. cheers, Gerd
