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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT 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 098E4C76191 for ; Thu, 25 Jul 2019 03:18:08 +0000 (UTC) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) (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 E0B9B229F9 for ; Thu, 25 Jul 2019 03:18:07 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E0B9B229F9 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 mail.linux-foundation.org (localhost [127.0.0.1]) by mail.linuxfoundation.org (Postfix) with ESMTP id 819D816FF; Thu, 25 Jul 2019 03:18:07 +0000 (UTC) Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id B7A9B16FD for ; Thu, 25 Jul 2019 03:18:05 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id CB6CA701 for ; Thu, 25 Jul 2019 03:18:04 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 24 Jul 2019 20:18:04 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,305,1559545200"; d="scan'208";a="189228282" Received: from allen-box.sh.intel.com ([10.239.159.136]) by fmsmga001.fm.intel.com with ESMTP; 24 Jul 2019 20:18:01 -0700 From: Lu Baolu To: David Woodhouse , Joerg Roedel , Bjorn Helgaas , Christoph Hellwig Subject: [PATCH v5 01/10] iommu/vt-d: Don't switch off swiotlb if use direct dma Date: Thu, 25 Jul 2019 11:17:08 +0800 Message-Id: <20190725031717.32317-2-baolu.lu@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190725031717.32317-1-baolu.lu@linux.intel.com> References: <20190725031717.32317-1-baolu.lu@linux.intel.com> Cc: Juergen Gross , kevin.tian@intel.com, Stefano Stabellini , ashok.raj@intel.com, Konrad Rzeszutek Wilk , alan.cox@intel.com, Jonathan Corbet , Robin Murphy , Steven Rostedt , linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, pengfei.xu@intel.com, Ingo Molnar , jacob.jun.pan@intel.com, Greg Kroah-Hartman , Boris Ostrovsky , mika.westerberg@linux.intel.com X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: iommu-bounces@lists.linux-foundation.org Errors-To: iommu-bounces@lists.linux-foundation.org The direct dma implementation depends on swiotlb. Hence, don't switch off swiotlb since direct dma interfaces are used in this driver. Cc: Ashok Raj Cc: Jacob Pan Cc: Kevin Tian Signed-off-by: Lu Baolu --- drivers/iommu/intel-iommu.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index bdaed2da8a55..8064af607d3b 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -4568,9 +4568,6 @@ static int __init platform_optin_force_iommu(void) iommu_identity_mapping |= IDENTMAP_ALL; dmar_disabled = 0; -#if defined(CONFIG_X86) && defined(CONFIG_SWIOTLB) - swiotlb = 0; -#endif no_iommu = 0; return 1; @@ -4709,9 +4706,6 @@ int __init intel_iommu_init(void) } up_write(&dmar_global_lock); -#if defined(CONFIG_X86) && defined(CONFIG_SWIOTLB) - swiotlb = 0; -#endif dma_ops = &intel_dma_ops; init_iommu_pm_ops(); -- 2.17.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu