From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:53388) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RNmRz-0007t5-Sz for qemu-devel@nongnu.org; Tue, 08 Nov 2011 09:15:01 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1RNmRy-0001gD-Ry for qemu-devel@nongnu.org; Tue, 08 Nov 2011 09:14:55 -0500 Received: from mail-gx0-f173.google.com ([209.85.161.173]:42133) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RNmRy-0001fz-Ob for qemu-devel@nongnu.org; Tue, 08 Nov 2011 09:14:54 -0500 Received: by ggnp2 with SMTP id p2so635889ggn.4 for ; Tue, 08 Nov 2011 06:14:53 -0800 (PST) Sender: Paolo Bonzini Message-ID: <4EB93957.7070500@redhat.com> Date: Tue, 08 Nov 2011 15:14:47 +0100 From: Paolo Bonzini MIME-Version: 1.0 References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] x86_64 linux kernel doesn't boot with -icount enabled List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Max Filippov Cc: qemu-devel On 11/08/2011 02:45 PM, Max Filippov wrote: > Hi. > > I'm trying to run stock Debian 6.0 x86_64 kernel using qemu git head. > With the following command line it's ok (getting to rootfs mounting > and panics): > > qemu-system-x86_64 -serial stdio -monitor null -nographic -kernel > /boot/vmlinuz-2.6.38-bpo.2-amd64 -append 'console=ttyS0 panic=1' > > But once I add -icount option (have tried -icount 1, 2, 16, 256, auto, > the result is the same) qemu loops infinitely in the qemu_run_timers: Is this a regression, either from 0.15 w/o iothread, or from something recent? Most backends are buggy with icount (with the embedded ones more likely to be reliable). Paolo