Re: [PATCH][v2] Hybrid extension support in Xen

[Ian Campbell <Ian.Campbell@citrix.com>]

On Tue, 2010-02-02 at 16:31 +0000, Sheng Yang wrote:
> 
> > I just meant that you should enable evtchn mode at the point at
> which
> > the guest tries to use event channels and not in some specific
> "enable
> > hybrid mode call", similarly for PV-timer mode etc.
> > 
> > Of course that presupposes that event channels and APIC etc are
> mutually
> > exclusive, which I don't think is a given.
> 
> I would give it try. Seems I need to bind tsc offset clean in event
> channel binding hypercall(if I didn't introduce another hypercall),
> sounds a little messy. 

I guess to clarify what I really meant was in the code which enables the
PV timer for a domain, rather than specifically in the event channel
hypercall which implements the binding to the timer evtchn. I'm not sure
if enabling the timer is a separate hypercall or is just a side effect
of binding to the evtchn.

Ian.