From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755833Ab3GUPir (ORCPT ); Sun, 21 Jul 2013 11:38:47 -0400 Received: from smtp02.citrix.com ([66.165.176.63]:42833 "EHLO SMTP02.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755756Ab3GUPiq (ORCPT ); Sun, 21 Jul 2013 11:38:46 -0400 X-IronPort-AV: E=Sophos;i="4.89,713,1367971200"; d="scan'208";a="36453850" Date: Sun, 21 Jul 2013 16:38:43 +0100 From: Stefano Stabellini X-X-Sender: sstabellini@kaball.uk.xensource.com To: Stefano Stabellini CC: Julien Grall , , , , , , Subject: Re: [PATCH v2] xen/arm: disable cpuidle and cpufreq when linux is running as dom0 In-Reply-To: Message-ID: References: <1374233220-13770-1-git-send-email-julien.grall@linaro.org> User-Agent: Alpine 2.02 (DEB 1266 2009-07-14) MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 > > > > Acked-by: Stefano Stabellini I added the patch to my queue