From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934827AbXGTHfk (ORCPT ); Fri, 20 Jul 2007 03:35:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1762759AbXGTHfb (ORCPT ); Fri, 20 Jul 2007 03:35:31 -0400 Received: from il.qumranet.com ([82.166.9.18]:54511 "EHLO il.qumranet.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934400AbXGTHfa (ORCPT ); Fri, 20 Jul 2007 03:35:30 -0400 Message-ID: <46A065C0.6030700@argo.co.il> Date: Fri, 20 Jul 2007 10:35:28 +0300 From: Avi Kivity User-Agent: Thunderbird 2.0.0.4 (X11/20070615) MIME-Version: 1.0 To: Bill Davidsen CC: Linux Kernel M/L Subject: Re: Where did KVM go in 2.6.22-git9? References: <46A02BFB.3090500@tmr.com> In-Reply-To: <46A02BFB.3090500@tmr.com> X-Enigmail-Version: 0.95.2 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-3.0 (firebolt.argo.co.il [0.0.0.0]); Fri, 20 Jul 2007 10:35:28 +0300 (IDT) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Bill Davidsen wrote: > I just built a 2.6.22-git9 kernel, and when I run oldconfig it (a) > sets the processor type to pentium-pro, and (b) the KVM stuff simply > isn't in the config. Before I spend a lot of time on this, was it > disabled temporarily for some reason, or is it a known bug, or ??? > > Processor is a Core2 E6600, and the starting config has KVM. > > Strong suggestion: put KVM in processor type and options, and if the > CPU type selected supports the feature, let the builder turn it on in > one place and have Kconfig turn on whatever voodoo is needed to allow > it, rather than have people trying to find out what depends have > changed with each release. I see KVm depends on X86_CMPXCHG64 which > simply doesn't seem to be defined directly anywhere. > > Going back to 2.6.21.6 until whatever changed is at least documented. > Kconfig changes got kvm temporarily disabled on i386 nonpae. Current -git has it back. -- Do not meddle in the internals of kernels, for they are subtle and quick to panic.