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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B4D77C41513 for ; Mon, 14 Aug 2023 05:54:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233358AbjHNFyE (ORCPT ); Mon, 14 Aug 2023 01:54:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45582 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233380AbjHNFxv (ORCPT ); Mon, 14 Aug 2023 01:53:51 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.43]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D15B910D7; Sun, 13 Aug 2023 22:53:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1691992430; x=1723528430; h=message-id:date:mime-version:cc:subject:to:references: from:in-reply-to:content-transfer-encoding; bh=a2QSRt0CT0L60eG86wMpFcJf0hM4N1YS5dCIVT5BbyY=; b=mBhjKxox3Rtokqm8y6HXw36ASNraU0/i+2egsmdEEFtjOfSJryOcr8vh GzEbCzY93MNj1urstpCxxoEaolrXR7ZUMTXeuWC7Yenc2yy4r11lU2cOy 64ghGB3uGJ2KFA29zQ2jcYyOoWVWvjdmYEhjuHUa2CJo16mrfPAAuaDYg LjOdB+4DP1QBIP48oReNbrYioNBiHverY0HZIntT5/a6hwr1TTnMIZqqe VMG6BKQmVVaKxBwCDBtpd0OZXuiUQxOW4uPWigvUATh4KuUqqj4etwJO/ gcRTsS3UgnySWuZSnOyWKQuova6mi+uo+CCZDt2au7iYQoF9Rnu2WkM3N A==; X-IronPort-AV: E=McAfee;i="6600,9927,10801"; a="458331939" X-IronPort-AV: E=Sophos;i="6.01,171,1684825200"; d="scan'208";a="458331939" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Aug 2023 22:53:50 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10801"; a="710209925" X-IronPort-AV: E=Sophos;i="6.01,171,1684825200"; d="scan'208";a="710209925" Received: from blu2-mobl.ccr.corp.intel.com (HELO [10.255.29.49]) ([10.255.29.49]) by orsmga006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Aug 2023 22:53:38 -0700 Message-ID: <0fcc42b0-9e11-6787-b678-2714ca92efab@linux.intel.com> Date: Mon, 14 Aug 2023 13:53:36 +0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.14.0 Cc: baolu.lu@linux.intel.com, Dmitry Osipenko , Marek Szyprowski , Nicolin Chen , Niklas Schnelle , Steven Price , Thierry Reding Subject: Re: [PATCH v6 14/25] iommu/msm: Implement an IDENTITY domain 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: <14-v6-e8114faedade+425-iommu_all_defdom_jgg@nvidia.com> From: Baolu Lu In-Reply-To: <14-v6-e8114faedade+425-iommu_all_defdom_jgg@nvidia.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-s390@vger.kernel.org On 2023/8/3 8:08, Jason Gunthorpe wrote: > What msm does during msm_iommu_set_platform_dma() is actually putting the > iommu into identity mode. > > Move to the new core support for ARM_DMA_USE_IOMMU by defining > ops->identity_domain. > > This driver does not support IOMMU_DOMAIN_DMA, however it cannot be > compiled on ARM64 either. Most likely it is fine to support dma-iommu.c > > Signed-off-by: Jason Gunthorpe > --- > drivers/iommu/msm_iommu.c | 23 +++++++++++++++++++---- > 1 file changed, 19 insertions(+), 4 deletions(-) Reviewed-by: Lu Baolu Best regards, baolu