From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from proxy.6wind.com (host.76.145.23.62.rev.coltfrance.com [62.23.145.76]) by dpdk.org (Postfix) with ESMTP id B209E592B for ; Mon, 11 Sep 2017 15:39:27 +0200 (CEST) Received: from glumotte.dev.6wind.com (unknown [10.16.0.195]) by proxy.6wind.com (Postfix) with ESMTP id C668DCF29B; Mon, 11 Sep 2017 15:35:33 +0200 (CEST) From: Olivier Matz To: dev@dpdk.org Cc: bruce.richardson@intel.com, john.mcnamara@intel.com, daniel.verkamp@intel.com, konstantin.ananyev@intel.com Date: Mon, 11 Sep 2017 15:39:13 +0200 Message-Id: <20170911133913.28737-1-olivier.matz@6wind.com> X-Mailer: git-send-email 2.11.0 Subject: [dpdk-dev] [PATCH] doc: announce ABI change for ring structure X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Sep 2017 13:39:27 -0000 As discussed on the mailing list, the alignment constraint of the ring structure can be relaxed. Link: http://dpdk.org/dev/patchwork/patch/25039 Link: http://dpdk.org/dev/patchwork/patch/26103 Signed-off-by: Olivier Matz --- doc/guides/rel_notes/deprecation.rst | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst index 3362f3350..5a63c0277 100644 --- a/doc/guides/rel_notes/deprecation.rst +++ b/doc/guides/rel_notes/deprecation.rst @@ -120,3 +120,9 @@ Deprecation Notices The non-"do-sig" versions of the hash tables will be removed (including the ``signature_offset`` parameter) and the "do-sig" versions renamed accordingly. + +* ring: The alignment constraints on the ring structure will be relaxed + to one cache line instead of two, and an empty cache line padding will + be added between the producer and consumer structures. The size of the + structure and the offset of the fields will remain the same on + platforms with 64B cache line, but will change on other platforms. -- 2.11.0