From mboxrd@z Thu Jan 1 00:00:00 1970 From: eric zhang Subject: [PATCH v3 3/3] doc: document --iova-mode EAL option Date: Wed, 3 Oct 2018 16:53:14 -0400 Message-ID: <1538599994-23331-4-git-send-email-eric.zhang@windriver.com> References: <1538599994-23331-1-git-send-email-eric.zhang@windriver.com> Mime-Version: 1.0 Content-Type: text/plain Cc: , , To: , Return-path: Received: from mail5.wrs.com (mail5.windriver.com [192.103.53.11]) by dpdk.org (Postfix) with ESMTP id 620661B472 for ; Wed, 3 Oct 2018 22:56:23 +0200 (CEST) In-Reply-To: <1538599994-23331-1-git-send-email-eric.zhang@windriver.com> List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" This patch updates Programmer's Guide and EAL parameter guides to show EAL option "--iova-mode" support. Signed-off-by: eric zhang --- doc/guides/prog_guide/env_abstraction_layer.rst | 8 ++++++++ doc/guides/testpmd_app_ug/run_app.rst | 4 ++++ 2 files changed, 12 insertions(+) diff --git a/doc/guides/prog_guide/env_abstraction_layer.rst b/doc/guides/prog_guide/env_abstraction_layer.rst index 34d871c..208c454 100644 --- a/doc/guides/prog_guide/env_abstraction_layer.rst +++ b/doc/guides/prog_guide/env_abstraction_layer.rst @@ -225,6 +225,14 @@ Misc Functions Locks and atomic operations are per-architecture (i686 and x86_64). +IOVA Mode Configuration +~~~~~~~~~~~~~~~~~~~~~~~ + +Auto detection of the IOVA mode, based on probing the bus and IOMMU configuration, may not report +the desired addressing mode when virtual devices that are not directly attached to the bus are present. +To facilitate forcing the IOVA mode to a specific value the EAL command line option ``--iova-mode`` can +be used to select either physical addressing('pa') or virtual addressing('va'). + Memory Segments and Memory Zones (memzone) ------------------------------------------ diff --git a/doc/guides/testpmd_app_ug/run_app.rst b/doc/guides/testpmd_app_ug/run_app.rst index 4c0d2ce..94fd0cc 100644 --- a/doc/guides/testpmd_app_ug/run_app.rst +++ b/doc/guides/testpmd_app_ug/run_app.rst @@ -156,6 +156,10 @@ See the DPDK Getting Started Guides for more information on these options. Use malloc instead of hugetlbfs. +* ``--iova-mode `` + + Force IOVA mode to a specific value. + Testpmd Command-line Options ---------------------------- -- 1.8.3.1