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[Xen-devel] [hybrid]: hang in update_wall_time

Hi Ian/Stefano:

I changed over to the PV clock for hybrid liked we talked at the
hackathon. I still have the hang in update_wall_time() after dom0
switches to xen as clocksource.

The source of hang seems to be in xen stime_local_stamp in cpu_time that
suddenly jumps to a large 64bit value. I've been chasing to figure
where that happens, and why for the hybrid and not PV. It appears the
source of jump is time_calibration_std_rendezvous()  in 
c->stime_master_stamp. Chasing that, seems to come from 
read_platform_stime(). The jump happens after switch to
xen clocksource in dom0.

I'll continue to debug, but let me know if you have any thoughts or
idea what might be going on.


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