Not applicable for production environments, but for lab purpuse this is excellent!
Assuming you have a MySQL server on the management server, login as root on the management server.
Type in: mysql to open the mysql console.
Type in: insert into cloud.configuration (category, instance, component, name, value, description) VALUES (‘Advanced’, ‘DEFAULT’, ‘management-server’, ‘xen.check.hvm’, ‘false’, ‘Allow XenServer on XenServer HVM’);
This makes the CloudPlatform not check for the HVM type.