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=-11.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=ham 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 B6533C432BE for ; Thu, 29 Jul 2021 07:17:44 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 885F361054 for ; Thu, 29 Jul 2021 07:17:44 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 885F361054 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date:Message-ID:From: References:To:Subject:Cc:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=A7DqRIRFeEzUwAfteowVOFik5v0qU7sJ0/G6RiKla5w=; b=rvSRkJWhEKBMhhDvvhbtumxCMs AMR/A25NyFLMaQ2W7EoJd078RGLkm4lQy8tVWi7y3yZcUvXJqomihrrqt6A0nto178+H0flcaKv/2 oiAUl1sA8INBiJoXO+IIVCfLVUhhszkCJJLbPytlVH7BQWlP2OHwrZoI3T/FImYr7lyFpHlGnn8/0 GmRy1HfFpJYdZqb3IjJesoE224DSB0dHLtY9pigzHANC2kztmeg4JKtXT+88QHJxvMWWGFb2lKxRQ dhhMLMQSrbuJbvcv8jUIpTSFcrMH52SfbaTBLZ8ReBZkmHQRk4JkikkQuIQMKUaKFIyT2e1M/Alte 9kIvitTg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1m90Gg-003Mib-5s; Thu, 29 Jul 2021 07:15:46 +0000 Received: from mga14.intel.com ([192.55.52.115]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1m90Gb-003Mhm-V1 for linux-arm-kernel@lists.infradead.org; Thu, 29 Jul 2021 07:15:43 +0000 X-IronPort-AV: E=McAfee;i="6200,9189,10059"; a="212546302" X-IronPort-AV: E=Sophos;i="5.84,278,1620716400"; d="scan'208";a="212546302" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Jul 2021 00:15:40 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.84,278,1620716400"; d="scan'208";a="464977711" Received: from allen-box.sh.intel.com (HELO [10.239.159.118]) ([10.239.159.118]) by orsmga008.jf.intel.com with ESMTP; 29 Jul 2021 00:15:33 -0700 Cc: baolu.lu@linux.intel.com, iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, suravee.suthikulpanit@amd.com, john.garry@huawei.com, dianders@chromium.org Subject: Re: [PATCH v2 18/24] iommu: Express DMA strictness via the domain type To: Robin Murphy , joro@8bytes.org, will@kernel.org References: <50bee17e9248ccfccb33a10238210d4ff4f4cf4d.1627468309.git.robin.murphy@arm.com> From: Lu Baolu Message-ID: Date: Thu, 29 Jul 2021 15:13:15 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <50bee17e9248ccfccb33a10238210d4ff4f4cf4d.1627468309.git.robin.murphy@arm.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210729_001542_068182_80F8D5F1 X-CRM114-Status: GOOD ( 14.68 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Robin, On 7/28/21 11:58 PM, Robin Murphy wrote: > diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c > index 982545234cf3..eecb5657de69 100644 > --- a/drivers/iommu/iommu.c > +++ b/drivers/iommu/iommu.c > @@ -136,6 +136,9 @@ static int __init iommu_subsys_init(void) > } > } > > + if (!iommu_default_passthrough() && !iommu_dma_strict) > + iommu_def_domain_type = IOMMU_DOMAIN_DMA_FQ; iommu_dma_strict could be changed later by the vendor iommu driver via iommu_set_dma_strict(). This seems not to be the right place to set iommu_def_domain_type. > + > pr_info("Default domain type: %s %s\n", > iommu_domain_type_str(iommu_def_domain_type), > (iommu_cmd_line & IOMMU_CMD_LINE_DMA_API) ? Best regards, baolu _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel