From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 47569A3168 for ; Wed, 16 Oct 2019 20:10:38 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id E9B4B1E99A; Wed, 16 Oct 2019 20:10:36 +0200 (CEST) Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by dpdk.org (Postfix) with ESMTP id 67F5B1E985 for ; Wed, 16 Oct 2019 20:10:34 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga107.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 16 Oct 2019 11:10:33 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.67,304,1566889200"; d="scan'208";a="347501486" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.10]) ([10.237.221.10]) by orsmga004.jf.intel.com with ESMTP; 16 Oct 2019 11:10:31 -0700 To: vattunuru@marvell.com, dev@dpdk.org Cc: jerinj@marvell.com, stephen@networkplumber.org, thomas@monjalon.net References: <20191016142901.31059-1-vattunuru@marvell.com> From: Ferruh Yigit Openpgp: preference=signencrypt Autocrypt: addr=ferruh.yigit@intel.com; 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charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Subject: Re: [dpdk-dev] [PATCH v1 1/1] bus/vdev: add get iommu class callback 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" On 10/16/2019 3:29 PM, vattunuru@marvell.com wrote: > From: Vamsi Attunuru > > When DPDK application is run with vdevs, EAL decides > the iommu mode and accordingly application runs in > either of the modes. > > For KNI kind of functionality with vdevs, since there > is no backed device structure in kernel, iommu_mode = PA > needs to be enforced during eal init. > > Patch adds get_iommu_class callback in vdev bus driver > and returns iommu mode as PA when vdevs are used for > kni functionality, callback returns iommu mode as DC > in normal cases. > > Signed-off-by: Vamsi Attunuru NACK, more comment on other thread: https://mails.dpdk.org/archives/dev/2019-October/147459.html