From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eduardo Habkost Subject: Re: [PATCH 0/2] kvm: disable virtualization on kdump Date: Wed, 29 Oct 2008 18:10:06 -0200 Message-ID: <20081029201006.GT23893@blackpad> References: <20081022232824.GD5247@verge.net.au> <20081023194129.GD27959@blackpad> <20081023222906.GB10753@verge.net.au> <4904676F.3020706@redhat.com> <490487C1.1010707@redhat.com> <20081026213927.GF23893@blackpad> <490581A9.80108@redhat.com> <20081027130937.GA28226@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: Andrew Morton , kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, kexec-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, Haren Myneni , Simon Horman , Avi Kivity , "Eric W. Biederman" To: Vivek Goyal Return-path: Content-Disposition: inline In-Reply-To: <20081027130937.GA28226-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kexec-bounces-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org Errors-To: kexec-bounces+glkk-kexec=m.gmane.org-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org List-Id: kvm.vger.kernel.org On Mon, Oct 27, 2008 at 09:09:37AM -0400, Vivek Goyal wrote: > On Mon, Oct 27, 2008 at 10:54:01AM +0200, Avi Kivity wrote: > > > > The hang was likely caused by vmx blocking INIT. Sigh. > > Avi, > > We boot kdump kernel with maxcpus=1. IIUC, in that code path we will not > be using INIT. So did you try booting kdump kernel with maxcpus=1 and did > it work for you? If not than problem could be something else. Just checked it here: I am passing maxcpus=1 to the kdump kernel. My full kexec commandline is this: /sbin/kexec --console-serial -p '--command-line=ro root=/dev/vg0/rawhide rhgb console=ttyS0,115200 ignore_loglevel irqpoll maxcpus=1 reset_devices earlyprintk=ttyS0,115200' --initrd=/boot/initrd-2.6.28-rc2kdump.img /boot/vmlinuz-2.6.28-rc2 Additional info: I don't get the "I'm in purgatory" message on serial console, when the system hangs. I do get the message if I trigger the crash dump after unloading the kvm-intel module, so the serial console is working. -- Eduardo