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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 F1FEFC32771 for ; Wed, 22 Jan 2020 04:51:13 +0000 (UTC) Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) (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 BABB821569 for ; Wed, 22 Jan 2020 04:51:13 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BABB821569 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 silver.osuosl.org (Postfix) with ESMTP id 8346A20495; Wed, 22 Jan 2020 04:51:13 +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 S9fItMyoTVp6; Wed, 22 Jan 2020 04:51:13 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by silver.osuosl.org (Postfix) with ESMTP id EDC6620387; Wed, 22 Jan 2020 04:51:12 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id D070AC0176; Wed, 22 Jan 2020 04:51:12 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id E357DC0174 for ; Wed, 22 Jan 2020 04:51:10 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id C65C287B5D for ; Wed, 22 Jan 2020 04:51:10 +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 YmGCM4g+DV6d for ; Wed, 22 Jan 2020 04:51:10 +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 hemlock.osuosl.org (Postfix) with ESMTPS id 0FC9B87B82 for ; Wed, 22 Jan 2020 04:50:56 +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 20:50:55 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,348,1574150400"; d="scan'208";a="215781251" 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 20:50:53 -0800 Subject: Re: [RFC PATCH 2/4] PCI: Add "pci=iommu_passthrough=" parameter for iommu passthrough To: Bjorn Helgaas References: <20200121141712.GA94911@google.com> From: Lu Baolu Message-ID: <48576108-c261-1bb8-cea9-db3b6782f383@linux.intel.com> Date: Wed, 22 Jan 2020 12:49:24 +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: <20200121141712.GA94911@google.com> Content-Language: en-US Cc: kevin.tian@intel.com, ashok.raj@intel.com, Greg Kroah-Hartman , linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, jacob.jun.pan@intel.com, linux-pci@vger.kernel.org, Robin Murphy , 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" Hi Bjorn, On 1/21/20 10:17 PM, Bjorn Helgaas wrote: > [+cc linux-pci, thread athttps://lore.kernel.org/r/20200101052648.14295-1-baolu.lu@linux.intel.com] > > On Wed, Jan 01, 2020 at 01:26:46PM +0800, Lu Baolu wrote: >> The new parameter takes a list of devices separated by a semicolon. >> Each device specified will have its iommu_passthrough bit in struct >> device set. This is very similar to the existing 'disable_acs_redir' >> parameter. > Almost all of this patchset is in drivers/iommu. Should the parameter > be "iommu ..." instead of "pci=iommu_passthrough=..."? > > There is already an "iommu.passthrough=" argument. Would this fit > better there? Since the iommu_passthrough bit is generic, it seems > like you anticipate similar situations for non-PCI devices. > Yes. Fair enough. Best regards, baolu _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu