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=-0.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 4F84CC433DF for ; Thu, 14 May 2020 05:51:44 +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 A8F20205CB for ; Thu, 14 May 2020 05:51:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="Px07Vdw5" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A8F20205CB Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org 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 500F388E43; Thu, 14 May 2020 05:51:43 +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 MRoadbo3kcvk; Thu, 14 May 2020 05:51:42 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by hemlock.osuosl.org (Postfix) with ESMTP id C4EF288D24; Thu, 14 May 2020 05:51:42 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id A9020C0178; Thu, 14 May 2020 05:51:42 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id 9F0C6C016F for ; Thu, 14 May 2020 05:51:36 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id 884C388E43 for ; Thu, 14 May 2020 05:51:36 +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 4qAjdfU75Fx5 for ; Thu, 14 May 2020 05:51:36 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by hemlock.osuosl.org (Postfix) with ESMTPS id 19D6788D24 for ; Thu, 14 May 2020 05:51:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=lHQOBRbPUcOA6NMwZdI6zLolOSP00QCntLQdV40Av9E=; b=Px07Vdw5BpOFOzujPzASdTSwFW bjuw5xdheRtkq0QEcHGcQqzmfHrO+zwDb8uEXhN5/5kjnBvkrCs3PMFIff20rlMpUH0GR75GZrv0M 42zdElDOf2GKoOAlEcaK5eiOJM3869hphcggLE384dQe0Tk5wCKFcoXyFrFQdwVDmdiZHgDjPksD/ jQMk2B9zA6dY6/JNbJiZVj4lEPJM7DrM6gfx3+bfMEeXsnKuEyDZ1fX0JY8eXFLIfEIIF3xlA2sg5 W0EFzo64gCt+OWNnuV7lMh+r9sUGY5UMqtZpAZH7iBKkGSwm1MjOzUv31lhD6wtXMqEUUWWmiYoSJ SVDiaEbg==; Received: from hch by bombadil.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1jZ6mK-0003fq-Ed; Thu, 14 May 2020 05:51:32 +0000 Date: Wed, 13 May 2020 22:51:32 -0700 From: Christoph Hellwig To: Jacob Pan Subject: Re: [PATCH v13 2/8] iommu/vt-d: Use a helper function to skip agaw for SL Message-ID: <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> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1589410909-38925-3-git-send-email-jacob.jun.pan@linux.intel.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Cc: "Tian, Kevin" , Alex Williamson , Raj Ashok , David Woodhouse , LKML , Christoph Hellwig , 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, 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. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu