Gerd Hoffmann
eeb0cf9abf
usb/vmstate: add parent dev path
... to make vmstate id string truely unique with multiple host controllers, i.e. move from "1/usb-ptr" to "0000:00:01.3/1/usb-ptr" (usb tabled connected to piix3 uhci). This obviously breaks migration. To handle this the usb bus property "full-path" is added. When setting this to false old behavior is maintained. This way current qemu will be compatible with old versions when started using '-M pc-$oldversion'. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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