From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:43398) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Y9baj-0008Qt-Cb for qemu-devel@nongnu.org; Fri, 09 Jan 2015 10:35:14 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Y9bae-0008Kh-Da for qemu-devel@nongnu.org; Fri, 09 Jan 2015 10:35:13 -0500 Received: from mx1.redhat.com ([209.132.183.28]:35769) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Y9bae-0008KJ-6P for qemu-devel@nongnu.org; Fri, 09 Jan 2015 10:35:08 -0500 Message-ID: <54AFF520.9000209@redhat.com> Date: Fri, 09 Jan 2015 16:34:56 +0100 From: Paolo Bonzini MIME-Version: 1.0 References: <54AFE8FC.5040308@redhat.com> In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] Nested KVM L2 guest hangs List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Ariel Zeitlin Cc: "qemu-devel@nongnu.org" On 09/01/2015 16:30, Ariel Zeitlin wrote: > Hi, Paolo > We are using a pretty new kernel 3.13.0-43 as part of Ubuntu14.04. > > What version would you recommend? At least 3.16. 3.13 is about a year old, and nested virtualization is a very new feature. > Do we need the upgrade on L0, L1 or both? Start with L0, but it may be that you need to upgrade L1 as well. Paolo