From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 03ECDC54E8E for ; Sun, 10 May 2020 23:20:01 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id BC24E20725 for ; Sun, 10 May 2020 23:20:00 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BC24E20725 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id 8130D868B5; Sun, 10 May 2020 23:20:00 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id SriVZQxVF-TA; Sun, 10 May 2020 23:20:00 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by fraxinus.osuosl.org (Postfix) with ESMTP id EBAED866C8; Sun, 10 May 2020 23:19:59 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id D0E44C0888; Sun, 10 May 2020 23:19:59 +0000 (UTC) Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) by lists.linuxfoundation.org (Postfix) with ESMTP id DCAD9C016F for ; Sun, 10 May 2020 23:19:58 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by silver.osuosl.org (Postfix) with ESMTP id 9A82422882 for ; Sun, 10 May 2020 23:19:58 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from silver.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id cNMHxBxFXCI9 for ; Sun, 10 May 2020 23:19:57 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by silver.osuosl.org (Postfix) with ESMTPS id 7EAA522846 for ; Sun, 10 May 2020 23:19:57 +0000 (UTC) IronPort-SDR: 5IQoU251DZuylIG+aKfz0HBBZAUFRwjzCC8q0Ommx1M5+FKsHbSpIrs1eRZ35S6sbMlhfrGK9t MKMxk2y6I4eQ== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 May 2020 16:19:56 -0700 IronPort-SDR: bMVr+HfzhLC7IDcW8Rgd6plGgxxu9+/Eji/jiXNKDERKa1e19pHZ6VicKFtf8Dpfrh0Rmd2H7z fTYtNw4Yfwng== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,377,1583222400"; d="scan'208";a="279614189" Received: from allen-box.sh.intel.com (HELO [10.239.159.139]) ([10.239.159.139]) by orsmga002.jf.intel.com with ESMTP; 10 May 2020 16:19:53 -0700 Subject: Re: [PATCH v4 0/3] Replace private domain with per-group default domain To: Joerg Roedel References: <20200506015947.28662-1-baolu.lu@linux.intel.com> From: Lu Baolu Message-ID: <7928dd48-93da-62f0-b455-6e6b248d0fae@linux.intel.com> Date: Mon, 11 May 2020 07:16:30 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 In-Reply-To: <20200506015947.28662-1-baolu.lu@linux.intel.com> Content-Language: en-US Cc: kevin.tian@intel.com, ashok.raj@intel.com, linux-kernel@vger.kernel.org, Daniel Drake , iommu@lists.linux-foundation.org, Robin Murphy , Christoph Hellwig , Derrick Jonathan X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" Hi Joerg, On 5/6/20 9:59 AM, Lu Baolu wrote: > Some devices are required to use a specific type (identity or dma) of > default domain when they are used with a vendor iommu. When the system > level default domain type is different from it, the vendor iommu driver > has to request a new default domain with either > iommu_request_dma_domain_for_dev() or iommu_request_dm_for_dev() in the > add_dev() callback. Unfortunately, these two helpers only work when the > group hasn't been assigned to any other devices, hence, some vendor iommu > driver has to use a private domain if it fails to request a new default > one. > > Joerg proposed an on-going proposal which makes the default domain > framework to support configuring per-group default domain during boot > process. > > https://lkml.org/lkml/2020/4/14/616 > [This has been applied in iommu/next.] > > Hence, there is no need to keep the private domain implementation > in the Intel IOMMU driver. This patch series aims to remove it. Can you please take this series to iommu/next for wider test? Best regards, baolu _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu