From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:44889) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1c6N0f-0007Vp-6s for qemu-devel@nongnu.org; Mon, 14 Nov 2016 14:33:41 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1c6N0c-0002tP-4J for qemu-devel@nongnu.org; Mon, 14 Nov 2016 14:33:41 -0500 Received: from mx1.redhat.com ([209.132.183.28]:57920) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1c6N0b-0002t4-VN for qemu-devel@nongnu.org; Mon, 14 Nov 2016 14:33:38 -0500 References: <1477082896-26553-1-git-send-email-pbonzini@redhat.com> <1477082896-26553-8-git-send-email-pbonzini@redhat.com> <20161110210907.41ebcb50@t450s.home> <20161111140342.7825fd1b@t450s.home> <4e7ae711-d7c0-35d3-4823-5856922c98b4@redhat.com> <20161114100932.46a5a2a6@t450s.home> <20161114114929.0a45aacf@t450s.home> From: Paolo Bonzini Message-ID: <635f3da4-ce9f-5fe8-bbc7-e2fcf97bed63@redhat.com> Date: Mon, 14 Nov 2016 20:33:32 +0100 MIME-Version: 1.0 In-Reply-To: <20161114114929.0a45aacf@t450s.home> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH 07/13] virtio-scsi: always use dataplane path if ioeventfd is active List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Alex Williamson Cc: cornelia.huck@de.ibm.com, famz@redhat.com, qemu-devel@nongnu.org, stefanha@redhat.com, mst@redhat.com On 14/11/2016 19:49, Alex Williamson wrote: > On Mon, 14 Nov 2016 19:10:54 +0100 > Paolo Bonzini wrote: > >> On 14/11/2016 18:09, Alex Williamson wrote: >>> Hmm, fixed yet not fixed. I get a nice shutdown and it even eliminates >>> a cpu spike shown in virt-manager at the end of shutdown that was >>> typical previously, but then I noticed dmesg showing me segfaults, so I >>> hooked up gdb and: >> >> Well, that I don't get the segfault already says something... Though >> it's not even clear from the backtrace what is causing the segfault. >> Let's try the same printf without the change. > > Log starting from virsh shutdown. The final line occurs just as the VM > starts spinning on all vcpus. Thanks, Ok, this could be a start. Just for information what is your virtio-win version? Paolo