When virtio devices get stopped, tell the kernel to unbind the
mapping between interrupts and eventfds.
Note: it behaves differently from other NICs which close eventfds,
free struct. In virtio, we do those things when close device in
following patch.
Signed-off-by: Jianfeng Tan <jianfeng.tan@intel.com>
Tested-by: Lei Yao <lei.a.yao@intel.com>
Acked-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>