It announces the planned ABI changes for vhost-user multiple queues feature on 
v2.2.

Signed-off-by: Changchun Ouyang <changchun.ouyang at intel.com>
---
 doc/guides/rel_notes/abi.rst | 1 +
 1 file changed, 1 insertion(+)

diff --git a/doc/guides/rel_notes/abi.rst b/doc/guides/rel_notes/abi.rst
index f00a6ee..dc1b0eb 100644
--- a/doc/guides/rel_notes/abi.rst
+++ b/doc/guides/rel_notes/abi.rst
@@ -38,3 +38,4 @@ Examples of Deprecation Notices

 Deprecation Notices
 -------------------
+* The ABI changes are planned for struct virtio_net in order to support 
vhost-user multiple queues feature. The upcoming release 2.1 will not contain 
these ABI changes, but release 2.2 will, and no backwards compatibility is 
planed due to the vhost-user multiple queues feature enabling. Binaries using 
this library build prior to version 2.2 will require updating and recompilation.
-- 
1.8.4.2

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