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=-5.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,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 090D1C33CAF for ; Wed, 22 Jan 2020 04:39:08 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (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 CC1C52071E for ; Wed, 22 Jan 2020 04:39:07 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CC1C52071E 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 hemlock.osuosl.org (Postfix) with ESMTP id 91E2C87B36; Wed, 22 Jan 2020 04:39:07 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from hemlock.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id L1Vu41MluACx; Wed, 22 Jan 2020 04:39:06 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by hemlock.osuosl.org (Postfix) with ESMTP id 477E787B0A; Wed, 22 Jan 2020 04:39:06 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 397A3C0176; Wed, 22 Jan 2020 04:39:06 +0000 (UTC) Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) by lists.linuxfoundation.org (Postfix) with ESMTP id 9BB30C0174 for ; Wed, 22 Jan 2020 04:39:04 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by silver.osuosl.org (Postfix) with ESMTP id 921DD2042B for ; Wed, 22 Jan 2020 04:39:04 +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 jB17wcgtgORs for ; Wed, 22 Jan 2020 04:39:03 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by silver.osuosl.org (Postfix) with ESMTPS id C0D9920387 for ; Wed, 22 Jan 2020 04:39:03 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 21 Jan 2020 20:39:03 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,348,1574150400"; d="scan'208";a="215779176" Received: from allen-box.sh.intel.com (HELO [10.239.159.138]) ([10.239.159.138]) by orsmga007.jf.intel.com with ESMTP; 21 Jan 2020 20:39:01 -0800 Subject: Re: [PATCH v5 4/7] iommu/vt-d: Use pci_real_dma_dev() for mapping To: Jon Derrick , linux-pci@vger.kernel.org, Bjorn Helgaas , Lorenzo Pieralisi References: <1579613871-301529-1-git-send-email-jonathan.derrick@intel.com> <1579613871-301529-5-git-send-email-jonathan.derrick@intel.com> From: Lu Baolu Message-ID: Date: Wed, 22 Jan 2020 12:37:32 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 MIME-Version: 1.0 In-Reply-To: <1579613871-301529-5-git-send-email-jonathan.derrick@intel.com> Content-Language: en-US Cc: iommu@lists.linux-foundation.org, Keith Busch , David Woodhouse , Christoph Hellwig 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" On 1/21/20 9:37 PM, Jon Derrick wrote: > The PCI device may have a DMA requester on another bus, such as VMD > subdevices needing to use the VMD endpoint. This case requires the real > DMA device when mapping to IOMMU. > > Signed-off-by: Jon Derrick Acked-by: Lu Baolu Thanks, baolu _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu