On Tue, Apr 24, 2018 at 06:19:35PM +0200, Paolo Bonzini wrote: > On 24/04/2018 16:22, Thomas Huth wrote: > > $ diff -u sclp-qom-tree-before.txt sclp-qom-tree-after.txt > > --- sclp-qom-tree-before.txt 2018-04-24 16:17:48.462849585 +0200 > > +++ sclp-qom-tree-after.txt 2018-04-24 16:18:02.222820256 +0200 > > @@ -1,13 +1,14 @@ > > -(qemu) info qom-tree > > +(qemu) info qom-tree > > /machine (s390-ccw-virtio-2.12-machine) > > /unattached (container) > > - /system[0] (qemu:memory-region) > > /sysbus (System) > > - /device[1] (virtio-net-ccw) > > + /device[0] (qemu-s390x-cpu) > > + /s390.ram[0] (qemu:memory-region) > > + /device[1] (sclpconsole) > > + /device[2] (virtio-net-ccw) > > /virtio-backend (virtio-net-device) > > /virtio-bus (virtio-ccw-bus) > > - /s390.ram[0] (qemu:memory-region) > > - /device[0] (qemu-s390x-cpu) > > + /system[0] (qemu:memory-region) > > /io[0] (qemu:memory-region) > > /sclp (sclp) > > /s390-sclp-event-facility (s390-sclp-event-facility) > > @@ -17,7 +18,6 @@ > > /s390-flic-qemu (s390-flic-qemu) > > /s390-skeys (s390-skeys-qemu) > > /peripheral-anon (container) > > - /device[0] (sclpconsole) > > /peripheral (container) > > /s390-ipl (s390-ipl) > > /virtual-css-bridge (virtual-css-bridge) > > > > ... the sclpconsole now shows up under /unattached instead of > > /peripheral-anon ... does that matter? (I don't have a clue) > > If the devices are created in the same order, before and after the > patch, it should be okay.
Is there a way to find out if the devices are created in the same order using only QMP commands? It would be very useful to automatically validate compatibility between QEMU versions. -- Eduardo