From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:42792) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SRSLI-0004NM-Do for qemu-devel@nongnu.org; Mon, 07 May 2012 14:07:29 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1SRSLG-0007Nb-C7 for qemu-devel@nongnu.org; Mon, 07 May 2012 14:07:27 -0400 Received: from david.siemens.de ([192.35.17.14]:27857) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1SRSLG-0007NJ-2Z for qemu-devel@nongnu.org; Mon, 07 May 2012 14:07:26 -0400 Message-ID: <4FA80F55.9030604@siemens.com> Date: Mon, 07 May 2012 15:07:17 -0300 From: Jan Kiszka MIME-Version: 1.0 References: <4FA6CB05.3060004@msgid.tls.msk.ru> <4FA76682.7090004@msgid.tls.msk.ru> <4FA7D35F.2060908@msgid.tls.msk.ru> <4FA7D9B4.9000607@siemens.com> <4FA7DD9C.4000906@msgid.tls.msk.ru> <4FA7E00E.5090305@msgid.tls.msk.ru> <4FA7EB25.9010009@siemens.com> <4FA80B09.40107@msgid.tls.msk.ru> In-Reply-To: <4FA80B09.40107@msgid.tls.msk.ru> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] current qemu git does not work with win7 guest List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Michael Tokarev Cc: qemu-devel , Gleb Natapov On 2012-05-07 14:48, Michael Tokarev wrote: > On 07.05.2012 19:32, Jan Kiszka wrote: >> On 2012-05-07 11:45, Michael Tokarev wrote: > [] >>> $ ./x86_64-softmmu/qemu-system-x86_64 -enable-kvm -drive file=w7x32sp1.raw,if=virtio,snapshot=on -m 1G -net none -machine accel=kvm,kernel_irqchip=on >> >> Can you check if -global apic.vapic=off makes any difference in the >> broken case? I'm facing general issues in that setup once I enable >> virtio-block - independent of vapic on/off or in-kernel/userspace. The >> boot freezes, and qemu can only be terminated via kill -9. So, retrying >> with IDE as block interface would also be interesting. > > Both switching from virtio to ide and disabling vapic fixes the reboot > issue, so win guests starts rebooting fine. You mean doing both at the same time, or also when you only apply one workaround? For me, disabling the vapic had _no_ impact, only disabling virtio allowed to boot at all. I suspect something is subtly broken in qemu, and it is not directly related to the vapic, maybe even not virtio. Jan -- Siemens AG, Corporate Technology, CT T DE IT 1 Corporate Competence Center Embedded Linux