RE: [Xen-devel] HVM SMP linux guest hangs in cpu_idle() with EFLAGS.IF = 1

[Gianni Tedesco <gianni.tedesco@xxxxxxxxxx>]

On Tue, 2010-07-13 at 20:13 +0100, Gianni Tedesco wrote:
> On Tue, 2010-07-13 at 19:42 +0100, Dan Magenheimer wrote:
> > This may be totally unrelated, but just in case...
> > 
> > Are you using xl to create your problem domains?
> > If so, you might want to set timer_mode=1 in your
> > vm.cfg.  (See other xen-devel thread "xen tsc problems".)
> 
> Yeah I just had that chat with stefano but I am running with
> timer_mode=1 now and no changes, I had timer_mode=3 before, and 0 before
> that.
> 
> Currently instrumenting my kernel to check for any time-sources going
> backwards...

In fact, strike this, the clocksource is jiffies which is being bumped
by interrupts, according to hvmctx, HPET is delivering ISR 0 so no way
wall time should be going backwards.

Damn


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