From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan Kiszka Subject: Re: nested EPT Date: Fri, 17 Jan 2014 12:40:12 +0100 Message-ID: <52D9169C.7090005@siemens.com> References: <52D81259.3010808@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: Kashyap Chamarthy , Paolo Bonzini , "kvm@vger.kernel.org" To: duy hai nguyen Return-path: Received: from david.siemens.de ([192.35.17.14]:20410 "EHLO david.siemens.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751296AbaAQLkW (ORCPT ); Fri, 17 Jan 2014 06:40:22 -0500 In-Reply-To: Sender: kvm-owner@vger.kernel.org List-ID: On 2014-01-17 12:29, Kashyap Chamarthy wrote: > On Fri, Jan 17, 2014 at 2:51 AM, duy hai nguyen wrote: >> Now I can run an L2 guest (nested guest) using the kvm kernel module >> of kernel 3.12 >> >> However, I am facing a new problem when trying to build and use kvm >> kernel module from git://git.kiszka.org/kvm-kmod.git: L1 (nested >> hypervisor) cannot boot L2 and the graphic console of virt-manager >> hangs displaying 'Booting from Hard Disk...'. L1 still runs fine. >> >> Loading kvm_intel with 'emulate_invalid_guest_state=0' in L0 does not >> solve the problem. I have also tried with different kernel versions: >> 3.12.0, 3.12.8 and 3.13.0 without success. >> >> Can you give me some suggestions? > > Maybe you can try without graphical managers and enable serial console > ('console=ttyS0') to your Kernel command-line of L2 guest, so you can > see where it's stuck. Tracing can also be helpful, both in L1 and L0: http://www.linux-kvm.org/page/Tracing Jan -- Siemens AG, Corporate Technology, CT RTC ITP SES-DE Corporate Competence Center Embedded Linux