[ovirt-users] 4.4.1-rc5: Looking for correct way to configure machine=q35 instead of machine=pc for arch=x86_64

Hello, I am hoping for some insight from folks with more hosted engine install experience. When I try to install the hosted engine using the RC5 dist I get the following error during the startup of the HostedEngine VM: XML error: The PCI controller with index='0' must be model='pci-root' for this machine type, but model='pcie-root' was found instead This is due to the HE Domain XML description using machine="pc-i440fx-rhel7.6.0". I've tried to override the default of 'pc' from ovirt-ansible-hosted-engine-setup/defaults/main.yml: he_emulated_machine: pc by passing to the ovirt-hosted-engine-setup script a --config-append=file parameter where file contains: [environment:default] OVEHOSTED_VM/emulatedMachine=str:q35 When the "Create ovirt-hosted-engine-ha run directory" step finishes the vm.conf file contains: cpuType=IvyBridge,+pcid,+spec-ctrl,+ssbd,+md-clear emulatedMachine=q35 At the "Start ovirt-ha-broker service on the host" step that file is removed. When that file appears again during the "Check engine VM health" step it now contains: cpuType=IvyBridge,+pcid,+spec-ctrl,+ssbd,+md-clear emulatedMachine=pc-i440fx-rhel7.6.0 After that the install fails with the metadata from "virsh dumpxml HostedEngine" containing: <ovirt-vm:exitCode type="int">1</ovirt-vm:exitCode> <ovirt-vm:exitMessage>XML error: The PCI controller with index='0' must be model='pci-root' for this machine type, but model='pcie-root' was found instead</ovirt-vm:exitMessage> Interestingly enough, the HostedEngineLocal VM that is running the appliance image has the value I need: <type arch='x86_64' machine='pc-q35-rhel8.2.0'>hvm</type> Does anyone on the list have any experience with where this needs to be overridden? Somewhere in the hosted engine setup or do I need to do something at a deeper level like vdsm or libvirt? Help much appreciated ! Thanks, Glenn