vhost: impl on_device_sandboxed for virtio device

vhost set_owner fn only needs to be called once. Put it in activate
fn will block the vhost devices to be activated again in future.
on_device_sandboxed is a good place to put the set_owner as it only
run once. So put it there.

BUG=None
TEST=launch Crosvm guest with vhost-net and vsock. Both of them can work
TEST=cargo test -p devices

Change-Id: I45308e26b026c9141e4426d8b1bbe1944612a915
Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.corp-partner.google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1954173
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>

1 files changed, 0 insertions, 5 deletions

diff --git a/devices/src/virtio/vhost/worker.rs b/devices/src/virtio/vhost/worker.rs
index 17114a4..9450929 100644
--- a/devices/src/virtio/vhost/worker.rs
+++ b/devices/src/virtio/vhost/worker.rs
@@ -51,11 +51,6 @@ impl<T: Vhost> Worker<T> {
         F1: FnOnce(&T) -> Result<()>,
         F2: FnOnce(&T) -> Result<()>,
     {
-        // Preliminary setup for vhost net.
-        self.vhost_handle
-            .set_owner()
-            .map_err(Error::VhostSetOwner)?;
-
         let avail_features = self
             .vhost_handle
             .get_features()