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,URIBL_BLOCKED,USER_AGENT_SANE_2 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 D0484C433DF for ; Thu, 14 May 2020 15:14:35 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (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 6451D20728 for ; Thu, 14 May 2020 15:14:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6451D20728 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 fraxinus.osuosl.org (Postfix) with ESMTP id 2BA53876C9; Thu, 14 May 2020 15:14:35 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 6GBsaOAWrgCJ; Thu, 14 May 2020 15:14:29 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by fraxinus.osuosl.org (Postfix) with ESMTP id 65D52871D0; Thu, 14 May 2020 15:14:29 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 4F05AC0863; Thu, 14 May 2020 15:14:29 +0000 (UTC) Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) by lists.linuxfoundation.org (Postfix) with ESMTP id 26787C016F for ; Thu, 14 May 2020 15:14:28 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by silver.osuosl.org (Postfix) with ESMTP id 0AD4B22D55 for ; Thu, 14 May 2020 15:14:28 +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 1NUwK1FPLgf0 for ; Thu, 14 May 2020 15:14:23 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by silver.osuosl.org (Postfix) with ESMTPS id B77EB2291C for ; Thu, 14 May 2020 15:14:23 +0000 (UTC) IronPort-SDR: zoG12km/Y7ka69Ab4njhf7BsnYGrfGXA6uuTEA4TDxI5sh8wzjcShimPUjURRGSKrnGYNWwyxQ FOZ22ZLbqHgQ== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 May 2020 08:14:23 -0700 IronPort-SDR: GPC+qMzbO5w3nXLk2I1zxCtLvHmDjizN++vGJHd3cNytQ/CKvIfb1WyQzRJ+RGggylclVZFo7I XmyHJ8E66PCw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,391,1583222400"; d="scan'208";a="266275355" Received: from jacob-builder.jf.intel.com (HELO jacob-builder) ([10.7.199.155]) by orsmga006.jf.intel.com with ESMTP; 14 May 2020 08:14:22 -0700 Date: Thu, 14 May 2020 08:20:33 -0700 From: Jacob Pan To: Christoph Hellwig Subject: Re: [PATCH v13 2/8] iommu/vt-d: Use a helper function to skip agaw for SL Message-ID: <20200514082033.54d2f621@jacob-builder> In-Reply-To: <20200514055132.GB22388@infradead.org> References: <1589410909-38925-1-git-send-email-jacob.jun.pan@linux.intel.com> <1589410909-38925-3-git-send-email-jacob.jun.pan@linux.intel.com> <20200514055132.GB22388@infradead.org> Organization: OTC X-Mailer: Claws Mail 3.13.2 (GTK+ 2.24.30; x86_64-pc-linux-gnu) MIME-Version: 1.0 Cc: "Tian, Kevin" , Alex Williamson , Raj Ashok , David Woodhouse , LKML , iommu@lists.linux-foundation.org, Jean-Philippe Brucker , Jonathan Cameron 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-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" On Wed, 13 May 2020 22:51:32 -0700 Christoph Hellwig wrote: > On Wed, May 13, 2020 at 04:01:43PM -0700, Jacob Pan wrote: > > An Intel iommu domain uses 5-level page table by default. If the > > iommu that the domain tries to attach supports less page levels, > > the top level page tables should be skipped. Add a helper to do > > this so that it could be used in other places. > > Please use up all 73 chars for the commit log. Will do. thanks. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu