From patchwork Fri Oct 18 20:20:36 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jens Freimann X-Patchwork-Id: 1179668 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 46vyKN41Hnz9sCJ for ; Sat, 19 Oct 2019 07:28:24 +1100 (AEDT) Received: from localhost ([::1]:45808 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iLYrG-0006Vv-1i for incoming@patchwork.ozlabs.org; Fri, 18 Oct 2019 16:28:22 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:48194) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iLYkz-0006uI-UL for qemu-devel@nongnu.org; Fri, 18 Oct 2019 16:21:54 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iLYky-0005rZ-TF for qemu-devel@nongnu.org; Fri, 18 Oct 2019 16:21:53 -0400 Received: from mx1.redhat.com ([209.132.183.28]:39516) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iLYky-0005rF-Nu for qemu-devel@nongnu.org; Fri, 18 Oct 2019 16:21:52 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 055A589B00D; Fri, 18 Oct 2019 20:21:52 +0000 (UTC) Received: from localhost (ovpn-116-92.ams2.redhat.com [10.36.116.92]) by smtp.corp.redhat.com (Postfix) with ESMTPS id BA22D60600; Fri, 18 Oct 2019 20:21:43 +0000 (UTC) From: Jens Freimann To: qemu-devel@nongnu.org Subject: [PATCH 07/11] migration: allow unplug during migration for failover devices Date: Fri, 18 Oct 2019 22:20:36 +0200 Message-Id: <20191018202040.30349-8-jfreimann@redhat.com> In-Reply-To: <20191018202040.30349-1-jfreimann@redhat.com> References: <20191018202040.30349-1-jfreimann@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.6.2 (mx1.redhat.com [10.5.110.67]); Fri, 18 Oct 2019 20:21:52 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: pkrempa@redhat.com, berrange@redhat.com, ehabkost@redhat.com, mst@redhat.com, aadam@redhat.com, dgilbert@redhat.com, alex.williamson@redhat.com, laine@redhat.com, ailan@redhat.com, parav@mellanox.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" In "b06424de62 migration: Disable hotplug/unplug during migration" we added a check to disable unplug for all devices until we have figured out what works. For failover primary devices qdev_unplug() is called from the migration handler, i.e. during migration. This patch adds a flag to DeviceState which is set to false for all devices and makes an exception for vfio-pci devices that are also primary devices in a failover pair. Signed-off-by: Jens Freimann --- hw/core/qdev.c | 1 + include/hw/qdev-core.h | 1 + qdev-monitor.c | 2 +- 3 files changed, 3 insertions(+), 1 deletion(-) diff --git a/hw/core/qdev.c b/hw/core/qdev.c index 89c134ec53..b1be568af3 100644 --- a/hw/core/qdev.c +++ b/hw/core/qdev.c @@ -995,6 +995,7 @@ static void device_initfn(Object *obj) dev->instance_id_alias = -1; dev->realized = false; + dev->allow_unplug_during_migration = false; object_property_add_bool(obj, "realized", device_get_realized, device_set_realized, NULL); diff --git a/include/hw/qdev-core.h b/include/hw/qdev-core.h index 28f594a47d..6b690e85b1 100644 --- a/include/hw/qdev-core.h +++ b/include/hw/qdev-core.h @@ -143,6 +143,7 @@ struct DeviceState { bool pending_deleted_event; QemuOpts *opts; int hotplugged; + bool allow_unplug_during_migration; BusState *parent_bus; QLIST_HEAD(, NamedGPIOList) gpios; QLIST_HEAD(, BusState) child_bus; diff --git a/qdev-monitor.c b/qdev-monitor.c index 508d85df87..265ab4f0d5 100644 --- a/qdev-monitor.c +++ b/qdev-monitor.c @@ -848,7 +848,7 @@ void qdev_unplug(DeviceState *dev, Error **errp) return; } - if (!migration_is_idle()) { + if (!migration_is_idle() && !dev->allow_unplug_during_migration) { error_setg(errp, "device_del not allowed while migrating"); return; }