linux-kernel - Re: [PATCH v3 7/9] KVM-GST: KVM Steal time accounting

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Message-ID: <1309508791.12449.631.camel@twins>
Date:	Fri, 01 Jul 2011 10:26:31 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Glauber Costa <glommer@...hat.com>
Cc:	kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
	Rik van Riel <riel@...hat.com>,
	Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>,
	Avi Kivity <avi@...hat.com>,
	Anthony Liguori <aliguori@...ibm.com>,
	Eric B Munson <emunson@...bm.net>
Subject: Re: [PATCH v3 7/9] KVM-GST: KVM Steal time accounting

On Thu, 2011-06-30 at 23:53 -0300, Glauber Costa wrote:
> On 06/30/2011 06:54 PM, Peter Zijlstra wrote:
> > On Wed, 2011-06-29 at 11:29 -0400, Glauber Costa wrote:
> >> +       if (static_branch(&paravirt_steal_enabled)) {
> >
> > How is that going to compile on !CONFIG_PARAVIRT or !x86 in general?
> > Only x86-PARAVIRT will provide that variable.
> >
> >
> 
> Good point. I'd wrap it into CONFIG_PARAVIRT.
> To be clear, the reason I did not put it inside 
> CONFIG_PARAVIRT_TIME_ACCOUNTING, is because I wanted to have the mere 
> display of steal time separated from the rest - unless, of course, you 
> object this idea.
> 
> Using CONFIG_PARAVIRT achieves this goal well.

ia64 seems to also have CONFIG_PARAVIRT
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