linux-kernel - Re: [PATCH v2] xen/arm: disable cpuidle and cpufreq when linux is running as dom0

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Message-ID: <alpine.DEB.2.02.1307211638260.4893@kaball.uk.xensource.com>
Date:	Sun, 21 Jul 2013 16:38:43 +0100
From:	Stefano Stabellini <stefano.stabellini@...citrix.com>
To:	Stefano Stabellini <stefano.stabellini@...citrix.com>
CC:	Julien Grall <julien.grall@...aro.org>, <ian.campbell@...rix.com>,
	<patches@...aro.org>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <xen-devel@...ts.xen.org>,
	<konrad.wilk@...cle.com>
Subject: Re: [PATCH v2] xen/arm: disable cpuidle and cpufreq when linux is
 running as dom0

On Sun, 21 Jul 2013, Stefano Stabellini wrote:
> On Fri, 19 Jul 2013, Julien Grall wrote:
> > When linux is running as dom0, Xen doesn't show the physical cpu but a
> > virtual CPU.
> > On some ARM SOC (for instance the exynos 5250), linux registers callbacks
> > for cpuidle and cpufreq. When these callbacks are called, they will modify
> > directly the physical cpu not the virtual one. It can impact the whole board
> > instead of only dom0.
> > 
> > Signed-off-by: Julien Grall <julien.grall@...aro.org>
> > 
> 
> Acked-by: Stefano Stabellini <stefano.stabellini@...citrix.com>

I added the patch to my queue
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