[dpdk-dev] [PATCH v2] doc: document known issues for multiprocess

[Anatoly Burakov]

Also, reference Bugzilla entry for keeping most current information in
one place.

Signed-off-by: Anatoly Burakov <anatoly.burakov at intel.com>
---

Notes:
    v2: clarify wording

 doc/guides/rel_notes/release_18_05.rst | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/doc/guides/rel_notes/release_18_05.rst b/doc/guides/rel_notes/release_18_05.rst
index e8d74f507..a2526666a 100644
--- a/doc/guides/rel_notes/release_18_05.rst
+++ b/doc/guides/rel_notes/release_18_05.rst
@@ -568,6 +568,19 @@ Known Issues
   dpdk-pdump example and any other applications using librte_pdump, cannot work
   with older version DPDK primary applications.
 
+* **Secondary process launch is not reliable.**
+
+  Recent memory hotplug patches have made multiprocess startup less reliable
+  than it was in the past. A number of workarounds are known to work depending
+  on the circumstances. As such it isn't recommended to use the secondary
+  process mechanism for critical systems. The underlying issues will be
+  addressed in upcoming releases.
+
+  The issue is explained in more detail, including potential workarounds,
+  in the Bugzilla entry referenced below.
+
+  Bugzilla entry: https://dpdk.org/tracker/show_bug.cgi?id=50
+
 
 Shared Library Versions
 -----------------------
-- 
2.17.0