vhost: add hint on how to add or remove device to a data core

[dpdk.git] / doc / guides / prog_guide / vhost_lib.rst

diff --git a/doc/guides/prog_guide/vhost_lib.rst b/doc/guides/prog_guide/vhost_lib.rst
index 0b6eda7..ba6065d 100644 (file)
--- a/doc/guides/prog_guide/vhost_lib.rst
+++ b/doc/guides/prog_guide/vhost_lib.rst
@@ -58,7 +58,8 @@ Vhost API Overview
       register two callbacks, new_destory and destroy_device.
       When virtio device is activated or deactivated by guest virtual machine,
       the callback will be called, then vSwitch could put the device onto data
-      core or remove the device from data core.
+      core or remove the device from data core by setting or unsetting
+      VIRTIO_DEV_RUNNING on the device flags.
 
 *   Read/write packets from/to guest virtual machine