As we could add virtual devices from different threads now, we
add a spin lock to protect the vdev device list.
Suggested-by: Anatoly Burakov <anatoly.burakov@intel.com>
Signed-off-by: Jianfeng Tan <jianfeng.tan@intel.com>
Reviewed-by: Qi Zhang <qi.z.zhang@intel.com>
Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>
35f462839b