{"id":814200,"url":"http://patchwork.ozlabs.org/api/1.2/covers/814200/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/cover/20170915101406.27823-1-cohuck@redhat.com/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/1.2/projects/14/?format=json","name":"QEMU Development","link_name":"qemu-devel","list_id":"qemu-devel.nongnu.org","list_email":"qemu-devel@nongnu.org","web_url":"","scm_url":"","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20170915101406.27823-1-cohuck@redhat.com>","list_archive_url":null,"date":"2017-09-15T10:14:05","name":"[RFC,0/1] s390x: pci compat handling","submitter":{"id":71914,"url":"http://patchwork.ozlabs.org/api/1.2/people/71914/?format=json","name":"Cornelia Huck","email":"cohuck@redhat.com"},"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/cover/20170915101406.27823-1-cohuck@redhat.com/mbox/","series":[{"id":3265,"url":"http://patchwork.ozlabs.org/api/1.2/series/3265/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=3265","date":"2017-09-15T10:14:05","name":"s390x: pci compat handling","version":1,"mbox":"http://patchwork.ozlabs.org/series/3265/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/covers/814200/comments/","headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@bilbo.ozlabs.org","Authentication-Results":["ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=nongnu.org\n\t(client-ip=2001:4830:134:3::11; helo=lists.gnu.org;\n\tenvelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n\treceiver=)","ext-mx04.extmail.prod.ext.phx2.redhat.com;\n\tdmarc=none (p=none dis=none) header.from=redhat.com","ext-mx04.extmail.prod.ext.phx2.redhat.com;\n\tspf=fail smtp.mailfrom=cohuck@redhat.com"],"Received":["from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11])\n\t(using TLSv1 with cipher AES256-SHA (256/256 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xtrtP3WlDz9sxR\n\tfor ;\n\tFri, 15 Sep 2017 20:17:15 +1000 (AEST)","from localhost ([::1]:52367 helo=lists.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.71) (envelope-from\n\t)\n\tid 1dsngN-00083i-W9\n\tfor incoming@patchwork.ozlabs.org; Fri, 15 Sep 2017 06:17:12 -0400","from eggs.gnu.org ([2001:4830:134:3::10]:38469)\n\tby lists.gnu.org with esmtp (Exim 4.71)\n\t(envelope-from ) id 1dsndX-0006HC-A2\n\tfor qemu-devel@nongnu.org; Fri, 15 Sep 2017 06:14:16 -0400","from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)\n\t(envelope-from ) id 1dsndW-0008L7-82\n\tfor qemu-devel@nongnu.org; Fri, 15 Sep 2017 06:14:15 -0400","from mx1.redhat.com ([209.132.183.28]:42018)\n\tby eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32)\n\t(Exim 4.71) (envelope-from ) id 1dsndW-0008JR-30\n\tfor qemu-devel@nongnu.org; Fri, 15 Sep 2017 06:14:14 -0400","from smtp.corp.redhat.com\n\t(int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11])\n\t(using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))\n\t(No client certificate requested)\n\tby mx1.redhat.com (Postfix) with ESMTPS id 2F8CD80B2A;\n\tFri, 15 Sep 2017 10:14:13 +0000 (UTC)","from localhost (ovpn-117-60.ams2.redhat.com [10.36.117.60])\n\tby smtp.corp.redhat.com (Postfix) with ESMTPS id 56ADD6F955;\n\tFri, 15 Sep 2017 10:14:10 +0000 (UTC)"],"DMARC-Filter":"OpenDMARC Filter v1.3.2 mx1.redhat.com 2F8CD80B2A","From":"Cornelia Huck ","To":"qemu-devel@nongnu.org","Date":"Fri, 15 Sep 2017 12:14:05 +0200","Message-Id":"<20170915101406.27823-1-cohuck@redhat.com>","X-Scanned-By":"MIMEDefang 2.79 on 10.5.11.11","X-Greylist":"Sender IP whitelisted, not delayed by milter-greylist-4.5.16\n\t(mx1.redhat.com [10.5.110.28]);\n\tFri, 15 Sep 2017 10:14:13 +0000 (UTC)","X-detected-operating-system":"by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic]\n\t[fuzzy]","X-Received-From":"209.132.183.28","Subject":"[Qemu-devel] [PATCH RFC 0/1] s390x: pci compat handling","X-BeenThere":"qemu-devel@nongnu.org","X-Mailman-Version":"2.1.21","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Cc":"thuth@redhat.com, zyimin@linux.vnet.ibm.com, david@redhat.com,\n\tCornelia Huck , pmorel@linux.vnet.ibm.com,\n\tagraf@suse.de, borntraeger@de.ibm.com, pasic@linux.vnet.ibm.com","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"\"Qemu-devel\"\n\t"},"content":"While playing around with compat machines a bit, I noticed that my\nzpci detanglement patches broke migration from 2.7 to current master\n(2.8 or newer are fine, which is why I did not notice that before.)\n\nqemu 2.7 seems to create a savevm that a s390-next (or master) build\nwithout the s390 phb chokes on:\n\nqemu-system-s390x: Unknown savevm section or instance 'PCIBUS' 0\n\nCreating the s390 phb for compat machines seems to cure this; still\nRFC for the following reasons:\n\n- I'm not sure what we're supposed to do on builds without pci. Fail\n creating the compat machines? Do we need a new set of _NOPCI compat\n machines for that?\n- I don't understand why 2.7 fails, but 2.8 and later are fine. At\n least, I was not able to spot which commit changed the behaviour\n here... and I really want to understand this. Pointers welcome.\n- I have not tested it extensively yet.\n\nPatch is against s390-next.\n\nCornelia Huck (1):\n s390x/ccw: create s390 phb for compat reasons as well\n\n hw/s390x/s390-virtio-ccw.c | 6 +++++-\n include/hw/s390x/s390-virtio-ccw.h | 1 +\n 2 files changed, 6 insertions(+), 1 deletion(-)"}