Re: One-shot timer broken on Xen

On Sat, 18 Sep 2010 19:42:45 +0300
Alexander Motin <mav_at_FreeBSD.org> wrote:

> Bruce Cran wrote:
> > I built a new kernel from HEAD on my Xen domU today and found that
> > it hung after the following messages:
> > 
> > smist0: <SpeedStep SMI> on cpu0
> > device_attach: smist0 attach returned 6
> > Device configuration finished.
> > procfs registered
> > Timecounter "TSC" frequency 2000118476 Hz quality 800
> > lapic: Divisor 2, Frequency 50001605 Hz
> > 
> > Setting kern.eventtimer.periodic to 1 allows the system to boot.
> 
> This doesn't tells much. What event timers found by the system there
> and what of them was used?

Sorry - here's the kern.eventtimer output:

kern.eventtimer.choice: LAPIC(400) i8254(100) RTC(0)
kern.eventtimer.et.LAPIC.flags: 15
kern.eventtimer.et.LAPIC.frequency: 50001856
kern.eventtimer.et.LAPIC.quality: 400
kern.eventtimer.et.i8254.flags: 1
kern.eventtimer.et.i8254.frequency: 1193182
kern.eventtimer.et.i8254.quality: 100
kern.eventtimer.et.RTC.flags: 17
kern.eventtimer.et.RTC.frequency: 32768
kern.eventtimer.et.RTC.quality: 0
kern.eventtimer.periodic: 1
kern.eventtimer.timer: LAPIC
kern.eventtimer.idletick: 0
kern.eventtimer.singlemul: 4

> Looking on kern.eventtimer.periodic support, I assume you are using
> HVM? PV kernel wasn't refactored yet, but I think it would be nice.

Yes, it's an i386 HVM system.

> May be you could give me an access to some Xen machine?

I'm going to be decomissioning another Xen machine so I can certainly
give you access to that one.

-- 
Bruce Cran