From nobody Sat Nov 1 08:12:24 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1526293070253700.7202460383926; Mon, 14 May 2018 03:17:50 -0700 (PDT) Received: from localhost ([::1]:55134 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fIAY9-0005gE-Cg for importer@patchew.org; Mon, 14 May 2018 06:17:49 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59207) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fIAI8-0004OH-38 for qemu-devel@nongnu.org; Mon, 14 May 2018 06:01:22 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fIAI5-0005Cb-SW for qemu-devel@nongnu.org; Mon, 14 May 2018 06:01:16 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:38228 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fIAI5-0005CC-Nn; Mon, 14 May 2018 06:01:13 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 36989F640A; Mon, 14 May 2018 10:01:13 +0000 (UTC) Received: from t460s.redhat.com (ovpn-116-219.ams2.redhat.com [10.36.116.219]) by smtp.corp.redhat.com (Postfix) with ESMTP id A80082024CB4; Mon, 14 May 2018 10:01:10 +0000 (UTC) From: David Hildenbrand To: qemu-devel@nongnu.org Date: Mon, 14 May 2018 12:00:21 +0200 Message-Id: <20180514100023.12542-17-david@redhat.com> In-Reply-To: <20180514100023.12542-1-david@redhat.com> References: <20180514100023.12542-1-david@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Mon, 14 May 2018 10:01:13 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.1]); Mon, 14 May 2018 10:01:13 +0000 (UTC) for IP:'10.11.54.4' DOMAIN:'int-mx04.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'david@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v3 16/18] s390x: prepare for multi stage hotplug handlers X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Pankaj Gupta , Eduardo Habkost , "Michael S . Tsirkin" , Cornelia Huck , David Hildenbrand , Markus Armbruster , Alexander Graf , Christian Borntraeger , qemu-s390x@nongnu.org, qemu-ppc@nongnu.org, Paolo Bonzini , Marcel Apfelbaum , Igor Mammedov , Luiz Capitulino , David Gibson , Richard Henderson Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" For multi stage hotplug handlers, we'll have to do some error handling in some hotplug functions, so let's use a local error variable (except for unplug requests). Also, add code to pass control to the final stage hotplug handler at the parent bus. Signed-off-by: David Hildenbrand --- hw/s390x/s390-virtio-ccw.c | 41 +++++++++++++++++++++++++++++++++++++++-- 1 file changed, 39 insertions(+), 2 deletions(-) diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c index 5796e24bd8..af9bf97933 100644 --- a/hw/s390x/s390-virtio-ccw.c +++ b/hw/s390x/s390-virtio-ccw.c @@ -394,21 +394,56 @@ static void s390_machine_reset(void) s390_cpu_set_state(S390_CPU_STATE_OPERATING, ipl_cpu); } =20 +static void s390_machine_device_pre_plug(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) +{ + Error *local_err =3D NULL; + + /* final stage hotplug handler */ + if (dev->parent_bus && dev->parent_bus->hotplug_handler) { + hotplug_handler_pre_plug(dev->parent_bus->hotplug_handler, dev, + &local_err); + } + error_propagate(errp, local_err); +} + static void s390_machine_device_plug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { + Error *local_err =3D NULL; + + /* final stage hotplug handler */ if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) { - s390_cpu_plug(hotplug_dev, dev, errp); + s390_cpu_plug(hotplug_dev, dev, &local_err); + } else if (dev->parent_bus && dev->parent_bus->hotplug_handler) { + hotplug_handler_plug(dev->parent_bus->hotplug_handler, dev, &local= _err); } + error_propagate(errp, local_err); } =20 static void s390_machine_device_unplug_request(HotplugHandler *hotplug_dev, DeviceState *dev, Error **e= rrp) { + /* final stage hotplug handler */ if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) { error_setg(errp, "CPU hot unplug not supported on this machine"); - return; + } else if (dev->parent_bus && dev->parent_bus->hotplug_handler) { + hotplug_handler_unplug_request(dev->parent_bus->hotplug_handler, d= ev, + errp); + } +} + +static void s390_machine_device_unplug(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) +{ + Error *local_err =3D NULL; + + /* final stage hotplug handler */ + if (dev->parent_bus && dev->parent_bus->hotplug_handler) { + hotplug_handler_unplug(dev->parent_bus->hotplug_handler, dev, + &local_err); } + error_propagate(errp, local_err); } =20 static CpuInstanceProperties s390_cpu_index_to_props(MachineState *ms, @@ -497,8 +532,10 @@ static void ccw_machine_class_init(ObjectClass *oc, vo= id *data) mc->possible_cpu_arch_ids =3D s390_possible_cpu_arch_ids; /* it is overridden with 'host' cpu *in kvm_arch_init* */ mc->default_cpu_type =3D S390_CPU_TYPE_NAME("qemu"); + hc->pre_plug =3D s390_machine_device_pre_plug; hc->plug =3D s390_machine_device_plug; hc->unplug_request =3D s390_machine_device_unplug_request; + hc->unplug =3D s390_machine_device_unplug; nc->nmi_monitor_handler =3D s390_nmi; } =20 --=20 2.14.3