Paolo Bonzini <pbonz...@redhat.com> writes: >> On 11/3/21 09:02, Markus Armbruster wrote: >>> I wonder whether we really have to step through three states >>> >>> x-exit-preconfig cont >>> preconfig ---> pre run ---> run >>> >>> and not two >>> >>> cont >>> pre run ---> run > > Devices would be hotplugged between x-exit-preconfig and cont, and
Cold plugged! > part of the machine until x-exit-preconfig; so there is a need for > something like x-exit-preconfig. Can you briefly explain why device_add doesn't work before x-exit-preconfig and does after? > In my prototype of a QMP-only binary, the idea would be that there > wouldn't be a single x-exit-preconfig command, but "cont", > "migrate-incoming", "finish-machine-init" (the stable replacement for > x-exit-preconfig) and "loadvm" would all complete the configuration of > the machine. "finish-machine-init" would do nothing else, the others > would continue with whatever they were supposed to do. > >>> Which of the queries you need work only between x-exit-preconfig and -S? >> Well before x-exit-preconfig, QMP only permits a very small number >> of commands - QEMU has loosened that up a bit, but I don't think anyone >> has checked whether there's enough to cover libvirt's current usage yet. > > Indeed I looked at the commands that operate on the backends, but not > that much at query commands. > > Paolo
