path: root/arch
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authorXuan Zhuo <xuanzhuo@linux.alibaba.com>2022-08-01 14:38:21 +0800
committerMichael S. Tsirkin <mst@redhat.com>2022-08-11 04:06:38 -0400
commitda802961832f9852886304290135457519815497 (patch)
tree15d1e1ab7b0387b95bfc5931a98f3ff12e77f9fc /arch
parent0b6fd46ec5f5720b76cbb01300ed9f7b7c6365c4 (diff)
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 'arch')
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/um/drivers/virtio_uml.c b/arch/um/drivers/virtio_uml.c
index 82ff3785bf69..e719af8bdf56 100644
--- a/arch/um/drivers/virtio_uml.c
+++ b/arch/um/drivers/virtio_uml.c
@@ -958,6 +958,7 @@ static struct virtqueue *vu_setup_vq(struct virtio_device *vdev,
goto error_create;
vq->priv = info;
+ vq->num_max = num;
num = virtqueue_get_vring_size(vq);
if (vu_dev->protocol_features &

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