I was doing integration testing on the current 4.3.0-pre repository which is planned to be released today as RC3 and i can't start a newly created VM:

Bug 1669102 - can't start VM qemu-kvm: warning: All CPU(s) up to maxcpus should be described in NUMA config, ability to start up with partial NU MA mappings is obsoleted and will be removed in future
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