From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [140.186.70.92] (port=34484 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1PzV6M-0001VW-86 for qemu-devel@nongnu.org; Tue, 15 Mar 2011 10:20:00 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1PzV6L-0004Ly-1U for qemu-devel@nongnu.org; Tue, 15 Mar 2011 10:19:58 -0400 Received: from ssl.dlh.net ([91.198.192.8]:38115) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1PzV6K-0004Lo-Rq for qemu-devel@nongnu.org; Tue, 15 Mar 2011 10:19:56 -0400 Message-ID: <4D7F7589.9000001@dlh.net> Date: Tue, 15 Mar 2011 15:19:53 +0100 From: Peter Lieven MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: [Qemu-devel] qemu-kvm 0.14.0 and clocksource=acpi_pm List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: kvm@vger.kernel.org, qemu-devel Hi, i'm currently testing qemu-kvm 0.14.0 in conjunction with Linux 2.6.38 on the host system. As there are some old kernels out that support kvm_clock but not reliably we used to run some of them with clocksource=acpi_pm. However, on this new combination of qemu-kvm and linux kernel I see the following message in the guests: Override clocksource acpi_pm is not HRT compatible. Cannot switch while in HRT/NOHZ mode This used to work with qemu-kvm 0.12.5 and linux 2.6.34. The guest is Ubuntu LTS 10.04.2 64-bit. Has anyone a clue? Additionally it would be great if someone who knows definetely would say from with kernel on clocksource=kvm_clock is stable (especially in conjunction with live migration) BR, Peter