Re: [Xen-ia64-devel] [PATCH] emulate PAL_HALT_LIGHT on domU

[Tristan Gingold <Tristan.Gingold@xxxxxxxx>]

Le Mercredi 05 Juillet 2006 07:27, Isaku Yamahata a écrit :
> Hi Sakai.
>
> xenLinux/x86 paravirtualizes idle loop to get timer interrupt
> while cpu halting.
> More exactly safe_halt() is paravirtualized using
> HYPERVISOR_set_timer_op().
> Xen/IA64 doesn't support HYPERVISOR_set_timer_op(), but it
> would be quite easy to add its support.
>
> I'm not sure about which is better, your approach or paravirtualizing
> idle loop.
> Could you explain the reason why you added vcpu->arch.hlt_timer
> instead of supporting set_timer_op hypercall with vcpu->timer?
I have a question related to the timer.

If you pause/unpause a domain for more than 10 secs the softlock watchdog is 
trigerred.  It seems to be harmless but not very elegant.

What are the possible solutions apart disabling the softlock watchdog ?

Tristan.

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