From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:33268) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1USMwZ-0002aU-P1 for qemu-devel@nongnu.org; Wed, 17 Apr 2013 03:38:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1USMwV-0005CX-Gm for qemu-devel@nongnu.org; Wed, 17 Apr 2013 03:38:15 -0400 Received: from mail-qa0-f49.google.com ([209.85.216.49]:45934) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1USMwV-0005CK-Bt for qemu-devel@nongnu.org; Wed, 17 Apr 2013 03:38:11 -0400 Received: by mail-qa0-f49.google.com with SMTP id bs12so735368qab.1 for ; Wed, 17 Apr 2013 00:38:10 -0700 (PDT) Sender: Richard Henderson Message-ID: <516E5152.9000205@twiddle.net> Date: Wed, 17 Apr 2013 09:37:54 +0200 From: Richard Henderson MIME-Version: 1.0 References: <20130415085312.GA14188@redhat.com> <20130415091842.GA15641@redhat.com> <516C1697.1070801@redhat.com> <516C280E.8070102@redhat.com> <20130415213636.GB26350@redhat.com> <20130415220310.GH22106@hall.aurel32.net> <20130415223246.GA5000@ohm.aurel32.net> In-Reply-To: <20130415223246.GA5000@ohm.aurel32.net> Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] unable to boot systemrescuecd with tcg only? List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Aurelien Jarno Cc: Paolo Bonzini , qemu-devel@nongnu.org, "Michael S. Tsirkin" On 2013-04-16 00:32, Aurelien Jarno wrote: > On Tue, Apr 16, 2013 at 12:03:10AM +0200, Aurelien Jarno wrote: >> On Tue, Apr 16, 2013 at 12:36:36AM +0300, Michael S. Tsirkin wrote: >>> On Mon, Apr 15, 2013 at 06:17:18PM +0200, Paolo Bonzini wrote: >>>> Il 15/04/2013 17:02, Paolo Bonzini ha scritto: >>>>> Il 15/04/2013 11:18, Michael S. Tsirkin ha scritto: >>>>>> On Mon, Apr 15, 2013 at 11:53:12AM +0300, Michael S. Tsirkin wrote: >>>>>>> Get system rescue CD version 2.8.0 here: >>>>>>> http://www.sysresccd.org/Sysresccd-versions >>>>>>> >>>>>>> Verify md5 checksum: 450305b2c3ac12d5c97ff849ca178586 >>>>>> >>>>>> Note: tried version 2.1.0, that boots fine. >>>>>> Tried version 3.5.0, that hangs on boot >>>>>> (or maybe it's just too slow? gave up after 15 min). >>>>>> In all cases -enable-kvm makes it work fine. >>>>> >>>>> Reproduced it too (by chance :)) with Fedora 16. Trying to bisect now. >>>> >>>> Hmm, no, must be a different thing. It was in a "seemingly innocuous" >>>> patch at the top of my tree, and system rescue CD works for me. >>> >>> 2.0.8? >>> >>> Hmm maybe the issue is I'm on a 32 bit host ... >>> >> >> It's an important information. With it I am able to reproduce the issue. >> > > I have bisected the issue to: > > | f437d0a3c24e471a855da33a086fe529e09a06af is the first bad commit > | commit f437d0a3c24e471a855da33a086fe529e09a06af > | Author: Richard Henderson > | Date: Tue Feb 19 21:06:31 2013 -0800 > | > | target-i386: Use movcond to implement shiftd. > | > | With this being all straight-line code, it can get deleted > | when the cc variables die. > | > | Signed-off-by: Richard Henderson > Ah. I'll see what I can do. Downloading 350M might not be possible while I'm traveling though, so any help producing a reduced test case would be appreciated. r~