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[Qemu-devel] [PATCH v4 5/5] vhost: send SET_VRING_ENABLE at start/stop
From: |
Yuanhan Liu |
Subject: |
[Qemu-devel] [PATCH v4 5/5] vhost: send SET_VRING_ENABLE at start/stop |
Date: |
Wed, 11 Nov 2015 21:24:41 +0800 |
Send SET_VRING_ENABLE at start/stop, to give the backend
an explicit sign of our state.
Signed-off-by: Yuanhan Liu <address@hidden>
---
hw/virtio/vhost.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c
index be48511..0e956b5 100644
--- a/hw/virtio/vhost.c
+++ b/hw/virtio/vhost.c
@@ -1234,6 +1234,11 @@ int vhost_dev_start(struct vhost_dev *hdev, VirtIODevice
*vdev)
}
}
+ if (hdev->vhost_ops->vhost_set_vring_enable) {
+ /* only enable first vq pair by default */
+ hdev->vhost_ops->vhost_set_vring_enable(hdev, hdev->vq_index == 0);
+ }
+
return 0;
fail_log:
vhost_log_put(hdev, false);
@@ -1264,6 +1269,10 @@ void vhost_dev_stop(struct vhost_dev *hdev, VirtIODevice
*vdev)
hdev->vq_index + i);
}
+ if (hdev->vhost_ops->vhost_set_vring_enable) {
+ hdev->vhost_ops->vhost_set_vring_enable(hdev, 0);
+ }
+
vhost_log_put(hdev, true);
hdev->started = false;
hdev->log = NULL;
--
1.9.0
- [Qemu-devel] [PATCH v4 0/5] handle vhost reset/start/stop correctly, Yuanhan Liu, 2015/11/11
- [Qemu-devel] [PATCH v4 3/5] vhost: introduce vhost_set/get_protocol_features callbacks, Yuanhan Liu, 2015/11/11
- [Qemu-devel] [PATCH v4 2/5] vhost: reset vhost net when virtio_net_reset happens, Yuanhan Liu, 2015/11/11
- [Qemu-devel] [PATCH v4 1/5] vhost: rename RESET_DEVICE backto RESET_OWNER, Yuanhan Liu, 2015/11/11
- [Qemu-devel] [PATCH v4 4/5] vhost: send SET_PROTOCOL_FEATURES at start, Yuanhan Liu, 2015/11/11
- [Qemu-devel] [PATCH v4 5/5] vhost: send SET_VRING_ENABLE at start/stop,
Yuanhan Liu <=
- Re: [Qemu-devel] [PATCH v4 0/5] handle vhost reset/start/stop correctly, Michael S. Tsirkin, 2015/11/12