3a643acd4f
Virtio PMD already has supported link status change(lsc), but VM which must be created by qemu 2.7.0 and above can support it when vhost user disconnects, since the capability to detect vhost user disconnection is introduced in qemu 2.7.0. The patch updates doc to let user know that. Signed-off-by: Zhiyong Yang <zhiyong.yang@intel.com> Acked-by: John McNamara <john.mcnamara@intel.com> Acked-by: Yuanhan Liu <yliu@fridaylinux.org>