From patchwork Fri Feb 24 09:22:54 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cornelia Huck X-Patchwork-Id: 732010 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3vV5V12CYPz9s7y for ; Fri, 24 Feb 2017 20:32:09 +1100 (AEDT) Received: from localhost ([::1]:35667 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1chCEQ-0003H4-Fj for incoming@patchwork.ozlabs.org; Fri, 24 Feb 2017 04:32:06 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:49078) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1chC60-0003HU-2a for qemu-devel@nongnu.org; Fri, 24 Feb 2017 04:23:28 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1chC5v-0004WY-5x for qemu-devel@nongnu.org; Fri, 24 Feb 2017 04:23:24 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:49950) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1chC5u-0004Vn-Sq for qemu-devel@nongnu.org; Fri, 24 Feb 2017 04:23:19 -0500 Received: from pps.filterd (m0098394.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.20/8.16.0.20) with SMTP id v1O9JCOJ142597 for ; Fri, 24 Feb 2017 04:23:17 -0500 Received: from e06smtp06.uk.ibm.com (e06smtp06.uk.ibm.com [195.75.94.102]) by mx0a-001b2d01.pphosted.com with ESMTP id 28tetefrtm-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Fri, 24 Feb 2017 04:23:17 -0500 Received: from localhost by e06smtp06.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Fri, 24 Feb 2017 09:23:11 -0000 Received: from b06cxnps4076.portsmouth.uk.ibm.com (d06relay13.portsmouth.uk.ibm.com [9.149.109.198]) by d06dlp02.portsmouth.uk.ibm.com (Postfix) with ESMTP id A00882190019; Fri, 24 Feb 2017 09:22:12 +0000 (GMT) Received: from d06av26.portsmouth.uk.ibm.com (d06av26.portsmouth.uk.ibm.com [9.149.105.62]) by b06cxnps4076.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id v1O9NBk89371976; Fri, 24 Feb 2017 09:23:11 GMT Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id E30D1AE045; Fri, 24 Feb 2017 08:21:00 +0000 (GMT) Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B2F64AE053; Fri, 24 Feb 2017 08:21:00 +0000 (GMT) Received: from gondolin.boeblingen.de.ibm.com (unknown [9.152.224.55]) by d06av26.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Fri, 24 Feb 2017 08:21:00 +0000 (GMT) From: Cornelia Huck To: peter.maydell@linaro.org Date: Fri, 24 Feb 2017 10:22:54 +0100 X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170224092259.16483-1-cornelia.huck@de.ibm.com> References: <20170224092259.16483-1-cornelia.huck@de.ibm.com> X-TM-AS-GCONF: 00 X-Content-Scanned: Fidelis XPS MAILER x-cbid: 17022409-0024-0000-0000-000002BC3DE6 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17022409-0025-0000-0000-000022854958 Message-Id: <20170224092259.16483-9-cornelia.huck@de.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-02-24_06:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=1 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1612050000 definitions=main-1702240093 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.156.1 Subject: [Qemu-devel] [PULL 08/13] virtio-ccw: check flic->adapter_routes_max_batch 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: Halil Pasic , agraf@suse.de, qemu-devel@nongnu.org, borntraeger@de.ibm.com, jfrei@linux.vnet.ibm.com, Cornelia Huck Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Halil Pasic Currently VIRTIO_CCW_QUEUE_MAX is defined as ADAPTER_ROUTES_MAX_GSI. That is when checking queue max we implicitly check the constraint concerning the number of adapter routes. This won't be satisfactory any more (due to backward migration considerations) if ADAPTER_ROUTES_MAX_GSI changes (ADAPTER_ROUTES_MAX_GSI is going to change because we want to support up to VIRTIO_QUEUE_MAX queues per virtio-ccw device). Let us introduce a check on a recently introduce flic property which gives us the compatibility machine aware limit on adapter routes. Signed-off-by: Halil Pasic Signed-off-by: Cornelia Huck --- hw/s390x/virtio-ccw.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c index 771411ea3c..a2ea95947f 100644 --- a/hw/s390x/virtio-ccw.c +++ b/hw/s390x/virtio-ccw.c @@ -1319,6 +1319,7 @@ static void virtio_ccw_device_plugged(DeviceState *d, Error **errp) CcwDevice *ccw_dev = CCW_DEVICE(d); SubchDev *sch = ccw_dev->sch; int n = virtio_get_num_queues(vdev); + S390FLICState *flic = s390_get_flic(); if (!virtio_has_feature(vdev->host_features, VIRTIO_F_VERSION_1)) { dev->max_rev = 0; @@ -1330,6 +1331,12 @@ static void virtio_ccw_device_plugged(DeviceState *d, Error **errp) VIRTIO_CCW_QUEUE_MAX); return; } + if (virtio_get_num_queues(vdev) > flic->adapter_routes_max_batch) { + error_setg(errp, "The number of virtqueues %d " + "exceeds flic adapter route limit %d", n, + flic->adapter_routes_max_batch); + return; + } sch->id.cu_model = virtio_bus_get_vdev_id(&dev->bus);