From mboxrd@z Thu Jan 1 00:00:00 1970 From: Asdo Subject: Re: KVM on old kernels pre-2.6.28 Date: Thu, 03 Feb 2011 15:33:44 +0100 Message-ID: <4D4ABCC8.4060300@shiftmail.org> References: <4D405116.2040206@shiftmail.org> <4D41412A.2090001@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Cc: KVM mailing list To: Avi Kivity Return-path: Received: from blade3.isti.cnr.it ([194.119.192.19]:49194 "EHLO BLADE3.ISTI.CNR.IT" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750920Ab1BCOeK (ORCPT ); Thu, 3 Feb 2011 09:34:10 -0500 Received: from SCRIPT-SPFWL-DAEMON.mx.isti.cnr.it by mx.isti.cnr.it (PMDF V6.5-x5 #31825) id <01NXE81UKU8WP3ZEQG@mx.isti.cnr.it> for kvm@vger.kernel.org; Thu, 03 Feb 2011 15:33:46 +0100 (MET) Received: from conversionlocal.isti.cnr.it by mx.isti.cnr.it (PMDF V6.5-x5 #31825) id <01NXE81U6PSGP58A19@mx.isti.cnr.it> for kvm@vger.kernel.org; Thu, 03 Feb 2011 15:33:45 +0100 (MET) In-reply-to: <4D41412A.2090001@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: On 01/27/2011 10:55 AM, Avi Kivity wrote: > ... Using kvm-kmod allows you to run a newer kvm on an older kernel ... ok thanks Regarding this: I can't find the kmod version requirements for every KVM version. What happens if the kernel module version I'm running is too old for the KVM I'm trying to run? Will it fail at startup giving an error, or I won't be warned and then weird things will happen sometime during runtime? If it's the latter, can I at least be sure that always installing the latest kvm-kmod will not do harm to any KVM, even if the KVM is older? Thank you