I'm trying to workaround the problem reported here:

but I did not find out how to start up the VM with the option -machine smm=off like sead on the lsit above. 

I guess that it is possible to run the command using the qemu command but I think that I will lose the management of it. 

It is possible to startup up a VM with this option using the oVirt GUI ou virsh?

Best regards
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