From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeremy Fitzhardinge Subject: Re: [Xen-users] Re: State of Xen in upstream Linux Date: Thu, 31 Jul 2008 11:58:23 -0700 Message-ID: <48920B4F.7010608@goop.org> References: <48910C99.10606@goop.org> <20080731090845.GH23888@redhat.com> <4891FFBA.1020702@goop.org> <7fac565a0807311119p55e534f1hc15005aea46671a2@mail.gmail.com> <48920455.40204@goop.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Grant McWilliams Cc: Alexey Eremenko , Virtualization Mailing List , Xen-devel , "Daniel P. Berrange" , xen-users@lists.xensource.com List-Id: virtualization@lists.linuxfoundation.org Grant McWilliams wrote: > Vbox OSE has full source available. I was working on a contract for a > corporation and was in the stage > of deciding which virtualization platform to run and installed Vbox in > a Xen system (running Xen). The installer > loaded the vbox driver (As well as set it up to load automatically) > and sent the server into a continuous reboot. Unfortunately this was > in a Datacenter that I had no physical access to. The Vbox developers > jumped all over me when I suggested that it was a bug. > When running Xen the VMware interface will come up and the driver will > load but the VMs just don't start. It seems like > that would be a much better situation than causing the entire machine > to crash. Seems like a Vbox problem. It was run in Dom0. Yes, that sounds like an inherently unstable configuration. I don't know anything about how VBox operates internally, but whatever pagetable management scheme they're using will quite likely not work under Xen without a lot of care. The best we can do in that case is try to make sure that VBox doesn't attempt to come up. If they don't rely on VT/SVM, then it may work from within a Xen hvm domain, but I don't know what benefit that would have. What were you trying to achieve by running VBox in dom0? J