[RFC] Adding timestamp to guest's serial console log

Hi, Need some comments regarding the following feature : Addition of timestamp support for serial console logs of a guest. We can implement it as a configurable attribute in xml. For example : <serial type='pty'> <log file='$PATH/$GUESTNAME-serial0.log' append='on' timestamp="on/off"/> <target type='isa-serial' port='0'> <model name='isa-serial'/> </target> </serial> We can add a timestamp after every '\n' character received from qemu. Can I have some comments regarding this change like what I should keep in mind while implementing, whether it is a welcome addition or not, issues I might face, any qemu changes required. Thanks and Regards, Shaleen Bathla