From nobody Mon Feb 9 23:16:15 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1574265288; cv=none; d=zoho.com; s=zohoarc; b=EapePhDS/8ealcxTAyFD5j9mqV6M3o4msUV8ONXmkdI+XuwjTi4vDN72XG/smMmzeYIGACwAsOJM/4ihvjjGfnM+N0QVsZjdut9HLe8KgWMyl1Ci+AQX3s/Ys7cXBXZfHwgSXr9xVpcB6UwAQknaxYn3VFeHJzwMpdirC7vg+hk= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1574265288; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=uANpi4ETWCKsezD49h9Xba8iURxarE4ymkAZ2Hp2byo=; b=ngIgR973kGiZYgSR/f5ypn8StKJz8J7PbnLEm1Qx6ERIaZ3fRegQ4K2NPeHfdsquSYO9vOEV/exKoKxq+QOohKHdJgPI4TJ+XB2av1r5+wMa+9cKNsnNwieu/T5TrFLUL94Ec15JsAgpH7rFS9U8UnH83XB+Zy/7F+Sl79cocws= ARC-Authentication-Results: i=1; mx.zoho.com; dkim=fail; spf=pass (zoho.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 157426528849319.59696787586961; Wed, 20 Nov 2019 07:54:48 -0800 (PST) Received: from localhost ([::1]:59706 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iXSJX-0001GG-Mt for importer@patchew.org; Wed, 20 Nov 2019 10:54:44 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:37738) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iXSF1-0003uU-PU for qemu-devel@nongnu.org; Wed, 20 Nov 2019 10:50:08 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iXSEy-0002I5-9v for qemu-devel@nongnu.org; Wed, 20 Nov 2019 10:50:01 -0500 Received: from us-smtp-2.mimecast.com ([207.211.31.81]:26376 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iXSEy-0002Hz-6x for qemu-devel@nongnu.org; Wed, 20 Nov 2019 10:50:00 -0500 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-9-VWBm6RKlN8qDlKHevqC8Ww-1; Wed, 20 Nov 2019 10:49:58 -0500 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 51DA3184CAA0; Wed, 20 Nov 2019 15:49:57 +0000 (UTC) Received: from localhost (dhcp-192-217.str.redhat.com [10.33.192.217]) by smtp.corp.redhat.com (Postfix) with ESMTPS id EF61166D2D; Wed, 20 Nov 2019 15:49:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1574264999; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=uANpi4ETWCKsezD49h9Xba8iURxarE4ymkAZ2Hp2byo=; b=DT5CXk61S4owhxf37bn7oQg8bD/UoVs6yxUl2Hl6TqZQ6GHtTgj3bgVkoqAEiuSnkzBNnX nfPoqRUlaOOX8eOiaau8QHQ2qPaWFHslZgV8eP+m20xhpF/Eb/I+FXJJXRe1fX4n8dR1ZM /cTfyOROXO5FIslq+MU9z/iJvKgo3Ns= From: Jens Freimann To: qemu-devel@nongnu.org Subject: [PATCH v3 1/4] net/virtio: fix dev_unplug_pending Date: Wed, 20 Nov 2019 16:49:48 +0100 Message-Id: <20191120154951.27877-2-jfreimann@redhat.com> In-Reply-To: <20191120154951.27877-1-jfreimann@redhat.com> References: <20191120154951.27877-1-jfreimann@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-MC-Unique: VWBm6RKlN8qDlKHevqC8Ww-1 X-Mimecast-Spam-Score: 0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.81 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: peter.maydell@linaro.org, jasowang@redhat.com, dgilbert@redhat.com, mst@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Type: text/plain; charset="utf-8" .dev_unplug_pending is set up by virtio-net code indepent of failover support was set for the device or not. This gives a wrong result when we check for existing primary devices in migration code. Fix this by actually calling dev_unplug_pending() instead of just checking if the function pointer was set. When the feature was not negotiated dev_unplug_pending() will always return false. This prevents us from going into the wait-unplug state when there's no primary device present. Fixes: 9711cd0dfc3f ("net/virtio: add failover support") Signed-off-by: Jens Freimann Reported-by: Dr. David Alan Gilbert Reviewed-by: Michael S. Tsirkin --- hw/net/virtio-net.c | 3 +++ migration/savevm.c | 3 ++- 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index 97a5113f7e..946039c0dc 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -3124,6 +3124,9 @@ static bool primary_unplug_pending(void *opaque) VirtIODevice *vdev =3D VIRTIO_DEVICE(dev); VirtIONet *n =3D VIRTIO_NET(vdev); =20 + if (!virtio_vdev_has_feature(vdev, VIRTIO_NET_F_STANDBY)) { + return false; + } return n->primary_dev ? n->primary_dev->pending_deleted_event : false; } =20 diff --git a/migration/savevm.c b/migration/savevm.c index 966a9c3bdb..a71b930b91 100644 --- a/migration/savevm.c +++ b/migration/savevm.c @@ -1119,7 +1119,8 @@ int qemu_savevm_nr_failover_devices(void) int n =3D 0; =20 QTAILQ_FOREACH(se, &savevm_state.handlers, entry) { - if (se->vmsd && se->vmsd->dev_unplug_pending) { + if (se->vmsd && se->vmsd->dev_unplug_pending && + se->vmsd->dev_unplug_pending(se->opaque)) { n++; } } --=20 2.21.0