From xen-devel-bounces@lists.xen.org Thu Oct 30 12:43:39 2014 Received: (at maildrop) by bugs.xenproject.org; 30 Oct 2014 12:43:39 +0000 Received: from lists.xen.org ([50.57.142.19]) by bugs.xenproject.org with esmtp (Exim 4.80) (envelope-from ) id 1Xjp4l-00046i-DH for xen-devel-maildrop-Eithu9ie@bugs.xenproject.org; Thu, 30 Oct 2014 12:43:39 +0000 Received: from localhost ([127.0.0.1] helo=lists.xen.org) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1XjovG-0008CR-Un; Thu, 30 Oct 2014 12:33:50 +0000 Received: from mail6.bemta4.messagelabs.com ([85.158.143.247]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1XjovF-0008CL-Ec for xen-devel@lists.xen.org; Thu, 30 Oct 2014 12:33:49 +0000 Received: from [85.158.143.35] by server-1.bemta-4.messagelabs.com id 99/30-09842-C2032545; Thu, 30 Oct 2014 12:33:48 +0000 X-Env-Sender: Ian.Campbell@citrix.com X-Msg-Ref: server-9.tower-21.messagelabs.com!1414672426!13714748!1 X-Originating-IP: [66.165.176.89] X-SpamReason: No, hits=0.0 required=7.0 tests=sa_preprocessor: VHJ1c3RlZCBJUDogNjYuMTY1LjE3Ni44OSA9PiAyMDMwMDc=\n, received_headers: No Received headers X-StarScan-Received: X-StarScan-Version: 6.12.3; banners=-,-,- X-VirusChecked: Checked Received: (qmail 10943 invoked from network); 30 Oct 2014 12:33:48 -0000 Received: from smtp.citrix.com (HELO SMTP.CITRIX.COM) (66.165.176.89) by server-9.tower-21.messagelabs.com with RC4-SHA encrypted SMTP; 30 Oct 2014 12:33:48 -0000 X-IronPort-AV: E=Sophos;i="5.07,285,1413244800"; d="scan'208";a="186462991" Message-ID: <1414672390.2064.31.camel@citrix.com> From: Ian Campbell To: Ian Jackson Date: Thu, 30 Oct 2014 12:33:10 +0000 In-Reply-To: <21585.6188.366311.80971@mariner.uk.xensource.com> References: <1414579268.29975.13.camel@citrix.com> <1414579302-6692-18-git-send-email-ian.campbell@citrix.com> <21585.6188.366311.80971@mariner.uk.xensource.com> Organization: Citrix Systems, Inc. X-Mailer: Evolution 3.12.7-1 MIME-Version: 1.0 X-DLP: MIA2 Cc: Stefano Stabellini , xen-devel@lists.xen.org Subject: Re: [Xen-devel] [PATCH OSSTEST v2 18/20] Osstest/Debian: Add "clk_ignore_unused" to default command line X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org create ! title it arm: domain 0 disables clocks which are in fact being used thanks On Wed, 2014-10-29 at 16:39 +0000, Ian Jackson wrote: > Ian Campbell writes ("[PATCH OSSTEST v2 18/20] Osstest/Debian: Add "clk_ignore_unused" to default command line"): > > This stops dom0 from messing with clocks which it should and is required on > > some platforms. It's harmless even when not needed. > > This is pretty odd. Doesn't this correspond to some kind of bug, in > the dom0 kernel perhaps ? dom0 is not aware that some clocks are actually in use (e.g. by the hypervisor), so the bug is probably in the lack of some interface to communicate this from Xen to dom0, or some other mechanism to gate this. I think some or all of the above ought to be added to the commit message, and perhaps in a comment too. Along with a reference to the bug which this mail should be about to create. Would you like me to do anything else? Ian. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel