diff options
| author | Xuan Zhuo <xuanzhuo@linux.alibaba.com> | 2022-08-01 14:38:21 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2022-08-11 04:06:38 -0400 |
| commit | da802961832f9852886304290135457519815497 (patch) | |
| tree | 15d1e1ab7b0387b95bfc5931a98f3ff12e77f9fc /drivers/s390/virtio | |
| parent | 0b6fd46ec5f5720b76cbb01300ed9f7b7c6365c4 (diff) | |
| download | lwn-da802961832f9852886304290135457519815497.tar.gz lwn-da802961832f9852886304290135457519815497.zip | |
virtio: record the maximum queue num supported by the device.
virtio-net can display the maximum (supported by hardware) ring size in
ethtool -g eth0.
When the subsequent patch implements vring reset, it can judge whether
the ring size passed by the driver is legal based on this.
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20220801063902.129329-2-xuanzhuo@linux.alibaba.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/s390/virtio')
| -rw-r--r-- | drivers/s390/virtio/virtio_ccw.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c index 161d3b141f0d..6b86d0280d6b 100644 --- a/drivers/s390/virtio/virtio_ccw.c +++ b/drivers/s390/virtio/virtio_ccw.c @@ -530,6 +530,9 @@ static struct virtqueue *virtio_ccw_setup_vq(struct virtio_device *vdev, err = -ENOMEM; goto out_err; } + + vq->num_max = info->num; + /* it may have been reduced */ info->num = virtqueue_get_vring_size(vq); |