From patchwork Sun Feb 4 03:40:57 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Xing, Beilei" X-Patchwork-Id: 34910 X-Patchwork-Delegate: helin.zhang@intel.com Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 7B4BAA49C; Sun, 4 Feb 2018 04:40:25 +0100 (CET) Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by dpdk.org (Postfix) with ESMTP id B04B0A488; Sun, 4 Feb 2018 04:40:24 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 03 Feb 2018 19:40:22 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.46,457,1511856000"; d="scan'208";a="24689870" Received: from unknown (HELO dpdk9.sh.intel.com) ([10.67.118.52]) by FMSMGA003.fm.intel.com with ESMTP; 03 Feb 2018 19:40:21 -0800 From: Beilei Xing To: john.mcnamara@intel.com, dev@dpdk.org, jingjing.wu@intel.com Cc: stable@dpdk.org Date: Sun, 4 Feb 2018 11:40:57 +0800 Message-Id: <1517715657-17546-1-git-send-email-beilei.xing@intel.com> X-Mailer: git-send-email 2.5.5 Subject: [dpdk-dev] [PATCH] doc: update i40e guide 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: , Errors-To: dev-bounces@dpdk.org Sender: "dev" This patch updates the i40e guide with new device parameter support-multi-driver. Signed-off-by: Beilei Xing Cc: stable@dpdk.org Acked-by: Marko Kovacevic Acked-by: John McNamara --- doc/guides/nics/i40e.rst | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/doc/guides/nics/i40e.rst b/doc/guides/nics/i40e.rst index 166f447..a83af6d 100644 --- a/doc/guides/nics/i40e.rst +++ b/doc/guides/nics/i40e.rst @@ -136,6 +136,17 @@ Runtime Config Options 1, 2, 4, 8 or 16. If no such parameter is configured, the number of queues per VF is 4 by default. +- ``Support multiple driver`` (default ``disable``) + + There was a multiple driver support issue during use of 700 series Ethernet + Adapter with both Linux kernel and DPDK PMD. To fix this issue, ``devargs`` + parameter ``support-multi-driver`` is introduced, for example:: + + -w 84:00.0,support-multi-driver=1 + + With the above configuration, DPDK PMD will not change global registers, and + will switch PF interrupt from IntN to Int0 to avoid interrupt conflict between + DPDK and Linux Kernel. Driver compilation and testing ------------------------------