On Thu, 10 May 2012, David Brownlee wrote:
x64 CentOS 5.8 guest so far), the console sometimes seems to show a stream of evtchn_do_event: handler 0xffffffff8020a88f didn't lower ipl 8 7 Is this normal? anything to be worried about?
Well, it's 'normal' in that it always seems to occur. It does not appear to be causing any problems, as the evtchn_do_event resets the ipl to what it expects.
The only handler I've seen doing that is xen_timer_handler(), which calls hardclock(), and I think that's where the ipl may get raised and not lowered. I've tried looking at it to figure out why, but haven't gotten very far.
There's a PR open for this: port-xen/46313. Mike -- Michael L. Hitch mhitch%montana.edu@localhost Computer Consultant Information Technology Center Montana State University Bozeman, MT USA