Re: [Xen-devel] [PATCH v2 0/4] VMX: Properly handle pi descriptor and per-cpu blocking list

[Dario Faggioli <dario.faggioli@xxxxxxxxxx>]

On Fri, 2016-06-24 at 06:33 +0000, Wu, Feng wrote:
> > -----Original Message-----
> > From: Dario Faggioli [mailto:dario.faggioli@xxxxxxxxxx]
> > In your case, AFAICUI, it's:
> >  - the vCPU should block, waiting for an event
> >  - the event is _not_ arrived, so we indeed should block
> >  - we do *not* block, due to some other reason
> > 
> > That does not look right to me... what about the fact that we
> > wanted to
> > actually wait for the event? :-O
> I understand your point. In my understanding, currently, vcpu_block()
> is
> for guest's HLT operation, which means, guest has nothing to do. In
> this case, even we return (not blocking), seems the function is not
> broken.
>
So, basically, you're saying that the vcpu has nothing to do, and in
fact it executed an HLT instruction, and you want to let it continue to
run? :-O

Dario
-- 
<<This happens because I choose it to happen!>> (Raistlin Majere)
-----------------------------------------------------------------
Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)

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