[uml-user] get process CPU kernel time / user time

[maxd\@inwind\.it <ma...@in...>]

Hi guys,
is there a way to get kernel time and user time of a process running inside user mode linux? I have noticed with the "time" command that the kernel time is always 0. Moreover, with pidstat I get wierd values for  CPU % utilization (values larger than 100 %). 
I am running a kernel 2.6.27-7, in skas mode.
Thanks a lot for any help you will be able to provide.
Cheers,
Massimiliano