From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: [PATCH 1/2] vmx,svm: Add module parameter to ignore the 'in use' check Date: Tue, 05 Jul 2011 14:14:26 +0300 Message-ID: <4E12F212.9050606@redhat.com> References: <1309820954-8629-1-git-send-email-levinsasha928@gmail.com> <4E12C6A1.70105@redhat.com> <1309853683.4117.33.camel@sasha> <20110705091106.GK29299@8bytes.org> <1309858322.4117.36.camel@sasha> <4E12DB73.9040601@redhat.com> <1309859802.4117.44.camel@sasha> <4E12E951.3040304@redhat.com> <1309864039.4117.57.camel@sasha> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Joerg Roedel , kvm@vger.kernel.org, Marcelo Tosatti To: Sasha Levin Return-path: Received: from mx1.redhat.com ([209.132.183.28]:42203 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932100Ab1GELOf (ORCPT ); Tue, 5 Jul 2011 07:14:35 -0400 In-Reply-To: <1309864039.4117.57.camel@sasha> Sender: kvm-owner@vger.kernel.org List-ID: On 07/05/2011 02:07 PM, Sasha Levin wrote: > > > > - was a BIOS update attempted? at least VMware uses the same check as > > kvm, and probably virtualbox as well, so this problem should have been > > seen before. > > We didn't update the BIOS. > > virtualbox was installed previously and didn't work properly either - > thats why he tried kvm afaik. That's a good data point. > > - was this after a reset or cold boot? > > This was a reset, we didn't try a cold boot. Unlikely to help, since it was a preexisting problem. > > - maybe a stealth rootkit is involved? > > > > A rootkit that messed up the MSRs or runs a hidden guest sounds like a > possibility too. > > Alexander Graf suggested it's a simple case of a BIOS vendor not > implementing specs properly as he has seen a similar case of BIOS only > allowing to start virtualization on the first CPU. I agree. But let's try a BIOS update first, if possible. If that fails, please repost the patches, but for svm only, since we haven't seen these issues on Intel. -- error compiling committee.c: too many arguments to function