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Re: [Xen-devel] [PATCH RFC v2 2/4] arm: introduce CONFIG_PARAVIRT and pv_time_ops



On Tue, 7 May 2013, Ian Campbell wrote:
> On Tue, 2013-05-07 at 13:15 +0100, Stefano Stabellini wrote:
> > On Tue, 7 May 2013, Ian Campbell wrote:
> > > On Mon, 2013-05-06 at 15:51 +0100, Stefano Stabellini wrote:
> > > > Introduce CONFIG_PARAVIRT on ARM.
> > > 
> > > What about PARAVIRT_TIME_ACCOUNTING? I'm not sure what it is but it
> > > looks like a more lightweight version of pv stolen time?
> >  
> > PARAVIRT_TIME_ACCOUNTING selects PARAVIRT on x86 :-)
> 
> Ah, that's maybe what confused me.
> 
> TBH its not at all clear to me what distinction the core code is trying
> to make with those two options, but do we not also want/need
> PARAVIRT_TIME_ACCOUNTING? Having reread the help text it seems to be
> some sort of "more accurate" accounting?

It is not clear to me either.
I think that you are right, we probably want PARAVIRT_TIME_ACCOUNTING too.

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