doc: add reference to virtio-user from KNI guide

To help encourage use of virtio-user in place of KNI, put a reference to
the relevant howto section at the top of the KNI doc.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Chenbo Xia <chenbo.xia@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>

diff --git a/doc/guides/prog_guide/kernel_nic_interface.rst b/doc/guides/prog_guide/kernel_nic_interface.rst
index 5248f96..e021cc6 100644 (file)
--- a/doc/guides/prog_guide/kernel_nic_interface.rst
+++ b/doc/guides/prog_guide/kernel_nic_interface.rst
@@ -6,6 +6,12 @@
 Kernel NIC Interface
 ====================
 
+.. note::
+
+   For an alternative to KNI, that does not require any out-of-tree Linux kernel modules,
+   or a custom library, see :ref:`virtio_user_as_exception_path`.
+
+
 The DPDK Kernel NIC Interface (KNI) allows userspace applications access to the Linux* control plane.
 
 The benefits of using the DPDK KNI are: