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vhost-backend: remove vhost_kernel_reset_device()

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vhost_kernel_reset_device() invokes RESET_OWNER, which disassociates the
owner process from the device. The device is left non-operational since
SET_OWNER is only called once during startup in vhost_dev_init().

vhost_kernel_reset_device() is never called so this latent bug never
appears. Get rid of vhost_kernel_reset_device() for now. If someone
needs it in the future they'll need to implement it correctly.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20231004014532.1228637-3-stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Raphael Norwitz <raphael.norwitz@nutanix.com>
Reviewed-by: Hanna Czenczek <hreitz@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2023-10-03 21:45:31 -04:00 committed by Michael S. Tsirkin
parent 22d2464f7e
commit e6383293eb
1 changed files with 0 additions and 6 deletions
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6
hw/virtio/vhost-backend.c
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@ -197,11 +197,6 @@ static int vhost_kernel_set_owner(struct vhost_dev *dev)
return vhost_kernel_call(dev, VHOST_SET_OWNER, NULL);
}
static int vhost_kernel_reset_device(struct vhost_dev *dev)
{
return vhost_kernel_call(dev, VHOST_RESET_OWNER, NULL);
}
static int vhost_kernel_get_vq_index(struct vhost_dev *dev, int idx)
{
assert(idx >= dev->vq_index && idx < dev->vq_index + dev->nvqs);
@ -322,7 +317,6 @@ const VhostOps kernel_ops = {
.vhost_get_features = vhost_kernel_get_features,
.vhost_set_backend_cap = vhost_kernel_set_backend_cap,
.vhost_set_owner = vhost_kernel_set_owner,
.vhost_reset_device = vhost_kernel_reset_device,
.vhost_get_vq_index = vhost_kernel_get_vq_index,
.vhost_vsock_set_guest_cid = vhost_kernel_vsock_set_guest_cid,
.vhost_vsock_set_running = vhost_kernel_vsock_set_running,