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 Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D7BF4C0015E for ; Wed, 26 Jul 2023 06:26:48 +0000 (UTC) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=WlPT7AGo; dkim-atps=neutral Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4R9kSl2bSsz3cN3 for ; Wed, 26 Jul 2023 16:26:47 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256 header.s=Intel header.b=WlPT7AGo; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=none (no SPF record) smtp.mailfrom=linux.intel.com (client-ip=192.55.52.93; helo=mga11.intel.com; envelope-from=baolu.lu@linux.intel.com; receiver=lists.ozlabs.org) X-Greylist: delayed 65 seconds by postgrey-1.37 at boromir; Wed, 26 Jul 2023 16:25:56 AEST Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4R9kRm59y5z2ykT for ; Wed, 26 Jul 2023 16:25:56 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1690352757; x=1721888757; h=message-id:date:mime-version:cc:subject:to:references: from:in-reply-to:content-transfer-encoding; bh=DlKsXPAKvUQNyaHWuLEMn+YeZGej9B0RE5XdM6qJwbQ=; b=WlPT7AGoTv8mjZ13bedNPtqxqA6YV01FVBPt5ZZOeWGcdbykex7drsq2 kR7PuxXIHE0oz0GTghHoF1tYcvV64ypU3vC7lo6attFO/Qx0y3kHJcCFR 0/FPunU2ZuMOwEe7fha8x0A+uT0H7MxtZHfnZZ6OdTTh5b/nDew1vidP9 c1Gzq0r0wovBLNJNry43PGDg1hiNbf/e9p8ZGWN/bbj6VR02VIHlYsjEO Svc3lzb4Go1g1Vy4CyYW2cviKb8gdRM3OApuYlPBn7k3EcGWtN5ImEbi6 dK/Vo4BtyL/iozB1MT2gCwsPB71V74kdtrlZsLp0mPk1dxK0/bkmkQcCs w==; X-IronPort-AV: E=McAfee;i="6600,9927,10782"; a="365384346" X-IronPort-AV: E=Sophos;i="6.01,231,1684825200"; d="scan'208";a="365384346" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jul 2023 23:24:30 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10782"; a="1057075644" X-IronPort-AV: E=Sophos;i="6.01,231,1684825200"; d="scan'208";a="1057075644" Received: from blu2-mobl.ccr.corp.intel.com (HELO [10.254.208.129]) ([10.254.208.129]) by fmsmga005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jul 2023 23:24:20 -0700 Message-ID: <7186790f-abed-61ba-2d19-6ab66640f30a@linux.intel.com> Date: Wed, 26 Jul 2023 14:24:18 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.13.0 Subject: Re: [PATCH v5 02/25] iommu: Add IOMMU_DOMAIN_PLATFORM Content-Language: en-US To: Jason Gunthorpe , Andy Gross , Alim Akhtar , Bjorn Andersson , AngeloGioacchino Del Regno , Baolin Wang , Christophe Leroy , Gerald Schaefer , Heiko Stuebner , iommu@lists.linux.dev, Jernej Skrabec , Jonathan Hunter , Joerg Roedel , Kevin Tian , Konrad Dybcio , Krzysztof Kozlowski , linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-s390@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-sunxi@lists.linux.dev, linux-tegra@vger.kernel.org, Russell King , linuxppc-dev@lists.ozlabs.org, Matthias Brugger , Matthew Rosato , Michael Ellerman , Nicholas Piggin , Orson Zhai , Rob Clark , Robin Murphy , Samuel Holland , Thierry Reding , Krishna Reddy , Chen-Yu Tsai , Will Deacon , Yong Wu , Chunyan Zhang References: <2-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> From: Baolu Lu In-Reply-To: <2-v5-d0a204c678c7+3d16a-iommu_all_defdom_jgg@nvidia.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Thierry Reding , Niklas Schnelle , Steven Price , Nicolin Chen , Dmitry Osipenko , baolu.lu@linux.intel.com, Marek Szyprowski Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On 2023/7/25 1:21, Jason Gunthorpe wrote: > This is used when the iommu driver is taking control of the dma_ops, > currently only on S390 and power spapr. It is designed to preserve the > original ops->detach_dev() semantic that these S390 was built around. > > Provide an opaque domain type and a 'default_domain' ops value that allows > the driver to trivially force any single domain as the default domain. > > Signed-off-by: Jason Gunthorpe > --- > drivers/iommu/iommu.c | 14 +++++++++++++- > include/linux/iommu.h | 6 ++++++ > 2 files changed, 19 insertions(+), 1 deletion(-) Reviewed-by: Lu Baolu