patches for DPDK stable branches
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From: Kevin Traynor <ktraynor@redhat.com>
To: Gage Eads <gage.eads@intel.com>
Cc: Andrew Rybchenko <arybchenko@solarflare.com>,
	dpdk stable <stable@dpdk.org>
Subject: [dpdk-stable] patch 'doc: add a note for multi-process in mempool guide' has been queued to LTS release 18.11.3
Date: Fri, 23 Aug 2019 10:43:32 +0100
Message-ID: <20190823094336.12078-42-ktraynor@redhat.com> (raw)
In-Reply-To: <20190823094336.12078-1-ktraynor@redhat.com>

Hi,

FYI, your patch has been queued to LTS release 18.11.3

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 08/28/19. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://github.com/kevintraynor/dpdk-stable-queue

This queued commit can be viewed at:
https://github.com/kevintraynor/dpdk-stable-queue/commit/44eddd06f4c240f27722e2d31c8d51f488088b1c

Thanks.

Kevin Traynor

---
From 44eddd06f4c240f27722e2d31c8d51f488088b1c Mon Sep 17 00:00:00 2001
From: Gage Eads <gage.eads@intel.com>
Date: Thu, 20 Jun 2019 17:07:35 -0500
Subject: [PATCH] doc: add a note for multi-process in mempool guide

[ upstream commit 4ae9f32eccef0e12ec7282889fc2a2e444b8ec4d ]

The mempool library assigns handler ops indexes based on the dynamic load
order of mempool handlers. Indexes are used so a mempool can be used by
multiple processes, but this only works if all processes agree on the
mapping from index to mempool handler.

When using the '-d' argument, it's possible for different processes to load
mempool handlers in different orders, and thus have different
index->handler mappings. Using a mempool in multiple of such processes will
result in undefined behavior.

This commit adds a note to the mempool library programmer's guide warning
users against this.

Fixes: 449c49b93a6b ("mempool: support handler operations")

Signed-off-by: Gage Eads <gage.eads@intel.com>
Acked-by: Andrew Rybchenko <arybchenko@solarflare.com>
---
 doc/guides/prog_guide/mempool_lib.rst | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/doc/guides/prog_guide/mempool_lib.rst b/doc/guides/prog_guide/mempool_lib.rst
index 52a569f57..3bb84b0a6 100644
--- a/doc/guides/prog_guide/mempool_lib.rst
+++ b/doc/guides/prog_guide/mempool_lib.rst
@@ -134,4 +134,12 @@ For applications that use ``rte_pktmbuf_create()``, there is a config setting
 an alternative mempool handler.
 
+  .. note::
+
+    When running a DPDK application with shared libraries, mempool handler
+    shared objects specified with the '-d' EAL command-line parameter are
+    dynamically loaded. When running a multi-process application with shared
+    libraries, the -d arguments for mempool handlers *must be specified in the
+    same order for all processes* to ensure correct operation.
+
 
 Use Cases
-- 
2.20.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2019-08-22 19:38:23.168129454 +0100
+++ 0042-doc-add-a-note-for-multi-process-in-mempool-guide.patch	2019-08-22 19:38:20.474025998 +0100
@@ -1 +1 @@
-From 4ae9f32eccef0e12ec7282889fc2a2e444b8ec4d Mon Sep 17 00:00:00 2001
+From 44eddd06f4c240f27722e2d31c8d51f488088b1c Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 4ae9f32eccef0e12ec7282889fc2a2e444b8ec4d ]
+
@@ -20 +21,0 @@
-Cc: stable@dpdk.org

  parent reply index

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-23  9:42 [dpdk-stable] patch 'net/bnx2x: fix warnings from invalid assert' " Kevin Traynor
2019-08-23  9:42 ` [dpdk-stable] patch 'net/qede: " Kevin Traynor
2019-08-23  9:42 ` [dpdk-stable] patch 'eal: correct log for alarm error' " Kevin Traynor
2019-08-23  9:42 ` [dpdk-stable] patch 'eal/linux: fix return after alarm registration failure' " Kevin Traynor
2019-08-23  9:42 ` [dpdk-stable] patch 'kernel/freebsd: fix module build on latest head' " Kevin Traynor
2019-08-23  9:42 ` [dpdk-stable] patch 'kernel/linux: fix modules install path' " Kevin Traynor
2019-08-23 10:04   ` Igor Ryzhov
2019-08-23  9:42 ` [dpdk-stable] patch 'ip_frag: fix IPv6 fragment size calculation' " Kevin Traynor
2019-08-23  9:42 ` [dpdk-stable] patch 'test/hash: fix off-by-one check on core count' " Kevin Traynor
2019-08-23  9:42 ` [dpdk-stable] patch 'test/hash: rectify slave id to point to valid cores' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'bus/vmbus: skip non-network devices' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'bpf: fix check array size' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'eal: hide internal hotplug function' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'vfio: remove incorrect experimental tag' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'mem: remove incorrect experimental tag on static symbol' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'telemetry: add missing header include' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'eal: fix positive error codes from probe/remove' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'net/bnx2x: fix invalid free on unplug' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'drivers/net: fix double free on init failure' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'net: fix encapsulation markers for inner L3 offset' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'net/mlx5: fix 32-bit build' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'net/netvsc: fix RSS offload settings' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'net/netvsc: fix xstats id' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'net/netvsc: fix xstats for VF device' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'doc: fix typos in flow API guide' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'net: fix how L4 checksum choice is tested' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'eal/freebsd: fix init completion' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'raw/skeleton: fix test of attribute set/get' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'examples/l3fwd-vf: remove unused Rx/Tx configuration' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'doc: remove useless Rx configuration in l2fwd guide' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'test: add rawdev autotest to meson' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'event/dpaa2: fix timeout ticks' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'eventdev: fix doxygen comment' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'app/eventdev: fix order test port creation' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'test/eventdev: fix producer core validity checks' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'net/mvneta: fix ierror statistics' " Kevin Traynor
2019-08-25 11:41   ` [dpdk-stable] [EXT] " Liron Himi
2019-08-23  9:43 ` [dpdk-stable] patch 'net: fix definition of IPv6 traffic class mask' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'examples: fix pkg-config detection with older make' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'bpf: fix validate for function return value' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'raw/ifpga/base: fix use of untrusted scalar " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'raw/ifpga/base: fix physical address info' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'usertools: fix refresh binding infos' " Kevin Traynor
2019-08-23  9:43 ` Kevin Traynor [this message]
2019-08-23  9:43 ` [dpdk-stable] patch 'table: fix crash in LPM IPv6' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'test: fix autotest crash' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'telemetry: fix build' " Kevin Traynor
2019-08-23  9:43 ` [dpdk-stable] patch 'app/testpmd: fix offloads config' " Kevin Traynor
2019-08-23  9:59   ` Kevin Traynor
2019-09-04 17:44     ` Kevin Traynor
2019-09-05  2:14       ` Zhao1, Wei
2019-09-11 14:46         ` Kevin Traynor
2019-09-13  9:27           ` Iremonger, Bernard

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