From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gleb Natapov Subject: Re: qemu-kvm: Inconsistent vgabios reference Date: Sun, 15 Jan 2012 16:29:34 +0200 Message-ID: <20120115142934.GH2167@redhat.com> References: <4F12C9BF.7040406@redhat.com> <4F12CA17.9010604@web.de> <4F12CB51.4040502@redhat.com> <4F12CB9C.9010006@web.de> <4F12CC59.8090808@redhat.com> <4F12D056.2060605@msgid.tls.msk.ru> <4F12D226.803@redhat.com> <4F12D44B.2040208@msgid.tls.msk.ru> <4F12D72F.1060001@redhat.com> <4F12E0F9.4030008@web.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Avi Kivity , Michael Tokarev , Marcelo Tosatti , kvm To: Jan Kiszka Return-path: Received: from mx1.redhat.com ([209.132.183.28]:56869 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751730Ab2AOO3i (ORCPT ); Sun, 15 Jan 2012 09:29:38 -0500 Content-Disposition: inline In-Reply-To: <4F12E0F9.4030008@web.de> Sender: kvm-owner@vger.kernel.org List-ID: On Sun, Jan 15, 2012 at 03:21:45PM +0100, Jan Kiszka wrote: > On 2012-01-15 14:39, Avi Kivity wrote: > > On 01/15/2012 03:27 PM, Michael Tokarev wrote: > >> On 15.01.2012 17:18, Avi Kivity wrote: > >>> On 01/15/2012 03:10 PM, Michael Tokarev wrote: > >> [] > >>>> FWIW, I had to patch extboot back in for debian qemu-kvm 1.0, because > >>>> of lack of boot support from scsi (and no alternative), and because > >>>> many people's scripts who used boot= broke. I thought it is better > >>>> to let users to have a chance to perform a smoother transition than > >>>> to break their stuff. > >>> > >>> It's really sad that people have to use lsi scsi. Luckily qemu 1.1 will > >>> feature virtio-scsi, though of course that doesn't help already > >>> installed guests or non Windows/Linux guests. Do you know what the use > >>> cases requiring scsi boot are? > >> > >> I've one (not very pleasant) bugreport handy, http://bugs.debian.org/652447 > >> and a few private messages asking me for ways to restore booting from scsi, > >> all talking about older/custom systems which worked for years in kvm. > >> As you can see in the bugreport mentioned, I know that scsi is broken > >> and should not be used and so on, and suggested switching from it on > >> every chance. > > > > Well we don't want to break people's guests. If the fix Gleb alluded to > > doesn't work, we'll have to restore extboot or something similar. Let > > us know. > > I would vote for proper seabios support or a free option rom. That would > allow us to make progress with obsoleting qemu-kvm instead of making a > step back again. > It is not enough to vote, somebody has to send patches :) And it seams there are two kind of people: those who can make such a patch, but don't because they know enough to avoid qemu lsi emulation and those who can't make it and use lsi qemu emulation. -- Gleb.