[libvirt] Libvirt clock/time settings doubt.

Hi everyone! What is the method/function responsible to setup time settings in libvirt? Considering the example of libvirt documentation. <clock offset='localtime'> <timer name='rtc' tickpolicy='catchup' track='guest'> <catchup threshold='123' slew='120' limit='10000'/> </timer> <timer name='pit' tickpolicy='delay'/> </clock> ... I know where this XML will be parsed. But I don't know where libvirt will pass clock/time settings to QEMU. Can somebody explain to me or send me a documentation about it? I passed two weeks trying to discover the sequence of function calls. Thanks guys! *--* *Julio Cesar Faracco*