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| author |   Jason Wang <jasowang@redhat.com> | 2020-08-04 19:20:38 +0300 |
|---|---|---|
| committer |   Michael S. Tsirkin <mst@redhat.com> | 2020-08-05 18:39:18 -0400 |
| commit | 460f7ce19f50e612a80b8cd0d2e38f2e14e765f6 (patch) | |
| tree | ed093568418d3d859d1ce4c08cddb148c0790a82 /drivers/vhost/vhost.c | |
| parent | vhost-vdpa: refine ioctl pre-processing (diff) | |
| download | linux-dev-460f7ce19f50e612a80b8cd0d2e38f2e14e765f6.tar.xz linux-dev-460f7ce19f50e612a80b8cd0d2e38f2e14e765f6.zip | |
vhost: generialize backend features setting/getting
Move the backend features setting/getting from net.c to vhost.c to be
reused by vhost-vdpa.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20200804162048.22587-3-eli@mellanox.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vhost/vhost.c')
| -rw-r--r-- | drivers/vhost/vhost.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index 8f622064b3e8..5e5cc3dd983e 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -2591,6 +2591,21 @@ struct vhost_msg_node *vhost_dequeue_msg(struct vhost_dev *dev, } EXPORT_SYMBOL_GPL(vhost_dequeue_msg); +void vhost_set_backend_features(struct vhost_dev *dev, u64 features) +{ + struct vhost_virtqueue *vq; + int i; + + mutex_lock(&dev->mutex); + for (i = 0; i < dev->nvqs; ++i) { + vq = dev->vqs[i]; + mutex_lock(&vq->mutex); + vq->acked_backend_features = features; + mutex_unlock(&vq->mutex); + } + mutex_unlock(&dev->mutex); +} +EXPORT_SYMBOL_GPL(vhost_set_backend_features); static int __init vhost_init(void) { |