From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59713) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aJfGL-00084C-G9 for qemu-devel@nongnu.org; Thu, 14 Jan 2016 05:36:18 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1aJfGG-0003R8-H2 for qemu-devel@nongnu.org; Thu, 14 Jan 2016 05:36:17 -0500 Received: from mga01.intel.com ([192.55.52.88]:16261) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1aJfGG-0003Qn-Bk for qemu-devel@nongnu.org; Thu, 14 Jan 2016 05:36:12 -0500 From: "Li, Liang Z" Date: Thu, 14 Jan 2016 10:36:07 +0000 Message-ID: Content-Language: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Subject: Re: [Qemu-devel] about the 'mptable' issue List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "kevin@koconnor.net" , "qemu-devel@nongnu.org" Cc: Paolo Bonzini , "Han, Huaitong" Correct something. The actual parameter for QEMU in our test case is:=20 'qemu-systerm-x86_64 -enable-kvm -smp 20 -m 2048 -no-acpi -monitor stdio -drive file=3D/mnt/centos6u6.qcow, if=3Dnone, id=3Dfoo -device virtio-blk-= pci, drive=3Dfoo' if there is no virtio-blk device: ' qemu-systerm-x86_64 -enable-kvm -smp 2= 0 -m 2048 -no-acpi -monitor stdio -drive file=3D/mnt/centos6u6.qcow', guest can boo= t successfully. It seems something wrong which make the virtio-blk work incorrectly. Liang=20 > Subject: about the 'mptable' issue >=20 > Hi Kevin, >=20 > We just found when starting QEMU with the '-smp 20 -no-acpi' option, the > centos6.6 or rhel 7.2 guest failed to boot. By debugging, I found it's yo= ur > seabios patch, the commit id '9ee2e26255661a' caused the failure. >=20 > I don't know what issue your patch tried to fix, assuming it's the right = fix, > should we add some prompt to prevent users from using such an option? > Crash the guest is not a good choice. >=20 >=20 > Liang