Message ID | 20191001234616.7825-26-mdroth@linux.vnet.ibm.com |
---|---|
State | New |
Headers | show
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Tue, 1 Oct 2019 23:47:25 GMT Received: from b01ledav001.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 42A2128059; Tue, 1 Oct 2019 23:47:25 +0000 (GMT) Received: from b01ledav001.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2716428058; Tue, 1 Oct 2019 23:47:25 +0000 (GMT) Received: from localhost (unknown [9.53.179.213]) by b01ledav001.gho.pok.ibm.com (Postfix) with ESMTP; Tue, 1 Oct 2019 23:47:25 +0000 (GMT) From: Michael Roth <mdroth@linux.vnet.ibm.com> To: qemu-devel@nongnu.org Subject: [PATCH 25/97] vhost: fix vhost_log size overflow during migration Date: Tue, 1 Oct 2019 18:45:04 -0500 Message-Id: <20191001234616.7825-26-mdroth@linux.vnet.ibm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191001234616.7825-1-mdroth@linux.vnet.ibm.com> References: <20191001234616.7825-1-mdroth@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-10-01_10:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1908290000 definitions=main-1910010203 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.156.1 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: <qemu-devel.nongnu.org> List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>, <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe> List-Archive: <https://lists.nongnu.org/archive/html/qemu-devel> List-Post: <mailto:qemu-devel@nongnu.org> List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help> List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>, <mailto:qemu-devel-request@nongnu.org?subject=subscribe> Cc: Li Hangjing <lihangjing@baidu.com>, qemu-stable@nongnu.org, "Michael S . Tsirkin" <mst@redhat.com> Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" <qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org> |
Series |
Patch Round-up for stable 4.0.1, freeze on 2019-10-10
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expand
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diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 7f61018f2a..6d3a013f49 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -131,6 +131,11 @@ static int vhost_sync_dirty_bitmap(struct vhost_dev *dev, } for (i = 0; i < dev->nvqs; ++i) { struct vhost_virtqueue *vq = dev->vqs + i; + + if (!vq->used_phys && !vq->used_size) { + continue; + } + vhost_dev_sync_region(dev, section, start_addr, end_addr, vq->used_phys, range_get_last(vq->used_phys, vq->used_size)); } @@ -168,6 +173,11 @@ static uint64_t vhost_get_log_size(struct vhost_dev *dev) } for (i = 0; i < dev->nvqs; ++i) { struct vhost_virtqueue *vq = dev->vqs + i; + + if (!vq->used_phys && !vq->used_size) { + continue; + } + uint64_t last = vq->used_phys + vq->used_size - 1; log_size = MAX(log_size, last / VHOST_LOG_CHUNK + 1); }