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

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Message-ID: <4E0D369C.4090403@redhat.com>
Date:	Thu, 30 Jun 2011 23:53:16 -0300
From:	Glauber Costa <glommer@...hat.com>
To:	Peter Zijlstra <peterz@...radead.org>
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 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.
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