From mboxrd@z Thu Jan 1 00:00:00 1970 From: Guido Winkelmann Subject: Re: Nested virtualization on Intel does not work - second level freezes when third level is starting Date: Thu, 12 Apr 2012 13:30:24 +0200 Message-ID: <1578774.DqaTT2Xmez@pc10> References: <2064795.zbiLdg1ddQ@pc10> <4F859448.8010303@redhat.com> <2630612.xQ0BDW3ZUC@pc10> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7Bit Cc: kvm@vger.kernel.org To: Orit Wasserman Return-path: Received: from unknownsite.de ([62.48.69.106]:34130 "EHLO hartes-hannover.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932181Ab2DLLab (ORCPT ); Thu, 12 Apr 2012 07:30:31 -0400 In-Reply-To: <2630612.xQ0BDW3ZUC@pc10> Sender: kvm-owner@vger.kernel.org List-ID: Am Mittwoch, 11. April 2012, 20:37:56 schrieb Guido Winkelmann: > Am Mittwoch, 11. April 2012, 17:25:12 schrieb Orit Wasserman: > > On 04/11/2012 04:43 PM, Guido Winkelmann wrote: > > > Am Mittwoch, 11. April 2012, 16:29:55 schrieben Sie: > > >> I'm not sure if this is the problem but I noticed that the second layer > > >> and > > >> the third layer have the same memory size (8G), how about trying to > > >> reduce > > >> the memory for the third layer ? > > > > > > I tried reducing the third layer to 1G. That didn't change anything. > > > > There is a patch for fixing nVMX in 3.4. > > http://www.mail-archive.com/kvm@vger.kernel.org/msg68951.html > > you can try it . > > That worked, though the VM inside the VM is still very slow... Well, it appeared to work yesterday for a short time, but now a lot of userspace programs in the L2 guest will die with a segmentation fault after chrooting from the rescue CD to the installed OS... Guido