Re: [Xen-devel] xm pause causing lockup

[Kip Macy <kip.macy@xxxxxxxxx>]

On 4/13/05, Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> wrote:
> Probably easiest way to trace this is with printk's in Xen. The guts of
> the work is done by domain_pause_by_systemcontroller() in xen/sched.h.
> This in turn calls domain_sleep() in common/schedule.c. 

I traced through that code a while back when trying to decide what to
call from the int3 handler.

A particularly
> interesting place to look will be teh synchronous spin loop at the end
> of domain_sleep -- if the paused domain isn't descheduled for some
> weird reason then the spin loop would never exit and domain0 would
> hang.

Good point. It will be interesting to see. 

I sometimes wonder if I should keep some of the buggy versions of
FreeBSD around for regression testing as they trigger some interesting
behaviours in xen and xend.

           -Kip

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