From mboxrd@z Thu Jan 1 00:00:00 1970 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) Received: from ALA-HCA.corp.ad.wrs.com (ala-hca.corp.ad.wrs.com [147.11.189.40]) by mail5.wrs.com (8.15.2/8.15.2) with ESMTPS id w93KsKgj006330 (version=TLSv1 cipher=AES128-SHA bits=128 verify=FAIL); Wed, 3 Oct 2018 13:56:07 -0700 Received: from yow-ezhang-lx.wrs.com (128.224.56.213) by ALA-HCA.corp.ad.wrs.com (147.11.189.50) with Microsoft SMTP Server (TLS) id 14.3.408.0; Wed, 3 Oct 2018 13:55:37 -0700 From: eric zhang To: , CC: , , Date: Wed, 3 Oct 2018 16:53:14 -0400 Message-ID: <1538599994-23331-4-git-send-email-eric.zhang@windriver.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1538599994-23331-1-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 X-Originating-IP: [128.224.56.213] Subject: [dpdk-dev] [PATCH v3 3/3] doc: document --iova-mode EAL option 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: Wed, 03 Oct 2018 20:56:23 -0000 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