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| author | Jason Wang <jasowang@redhat.com> | 2015-05-29 14:15:28 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2015-05-31 16:45:38 +0200 |
| commit | 10ceaa1e8f9f74c917df1fe5db856817a8b26fe7 (patch) | |
| tree | d05b510e29c21dc8d139216a31ce8abfb68d2e0c /hw/s390x/virtio-ccw.c | |
| parent | 8dfbaa6ac450c4ec2646b1ca08a4017052a90c1d (diff) | |
| download | qemu-10ceaa1e8f9f74c917df1fe5db856817a8b26fe7.zip qemu-10ceaa1e8f9f74c917df1fe5db856817a8b26fe7.tar.gz qemu-10ceaa1e8f9f74c917df1fe5db856817a8b26fe7.tar.bz2 | |
virtio-ccw: validate the number of queues against bus limitation
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Alexander Graf <agraf@suse.de>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/s390x/virtio-ccw.c')
| -rw-r--r-- | hw/s390x/virtio-ccw.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c index 60d60d6..ef90fed 100644 --- a/hw/s390x/virtio-ccw.c +++ b/hw/s390x/virtio-ccw.c @@ -1381,7 +1381,16 @@ static int virtio_ccw_load_config(DeviceState *d, QEMUFile *f) static void virtio_ccw_device_plugged(DeviceState *d, Error **errp) { VirtioCcwDevice *dev = VIRTIO_CCW_DEVICE(d); + VirtIODevice *vdev = virtio_bus_get_device(&dev->bus); SubchDev *sch = dev->sch; + int n = virtio_get_num_queues(vdev); + + if (virtio_get_num_queues(vdev) > VIRTIO_CCW_QUEUE_MAX) { + error_setg(errp, "The nubmer of virtqueues %d " + "exceeds ccw limit %d", n, + VIRTIO_CCW_QUEUE_MAX); + return; + } sch->id.cu_model = virtio_bus_get_vdev_id(&dev->bus); |