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_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 DB26FC433DF for ; Fri, 15 May 2020 12:02:03 +0000 (UTC) Received: from whitealder.osuosl.org (smtp1.osuosl.org [140.211.166.138]) (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 B34A7206D4 for ; Fri, 15 May 2020 12:02:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B34A7206D4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=8bytes.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 whitealder.osuosl.org (Postfix) with ESMTP id 78C1E88DE6; Fri, 15 May 2020 12:02:03 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from whitealder.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id xvw7JTzn1uXQ; Fri, 15 May 2020 12:01:58 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by whitealder.osuosl.org (Postfix) with ESMTP id D579D88DEB; Fri, 15 May 2020 12:01:58 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id B93ECC0859; Fri, 15 May 2020 12:01:58 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by lists.linuxfoundation.org (Postfix) with ESMTP id 487B6C016F for ; Fri, 15 May 2020 12:01:57 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id 34410870D1 for ; Fri, 15 May 2020 12:01:57 +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 2smQ_wjJwlXC for ; Fri, 15 May 2020 12:01:56 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from theia.8bytes.org (8bytes.org [81.169.241.247]) by fraxinus.osuosl.org (Postfix) with ESMTPS id E5581870B6 for ; Fri, 15 May 2020 12:01:55 +0000 (UTC) Received: by theia.8bytes.org (Postfix, from userid 1000) id 2B23D379; Fri, 15 May 2020 14:01:52 +0200 (CEST) Date: Fri, 15 May 2020 14:01:50 +0200 From: Joerg Roedel To: Jean-Philippe Brucker Subject: Re: [PATCH 2/4] iommu/amd: Use pci_ats_supported() Message-ID: <20200515120150.GU18353@8bytes.org> References: <20200515104359.1178606-1-jean-philippe@linaro.org> <20200515104359.1178606-3-jean-philippe@linaro.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200515104359.1178606-3-jean-philippe@linaro.org> User-Agent: Mutt/1.10.1 (2018-07-13) Cc: alex.williamson@redhat.com, ashok.raj@intel.com, linux-pci@vger.kernel.org, robin.murphy@arm.com, iommu@lists.linux-foundation.org, bhelgaas@google.com, will@kernel.org, dwmw2@infradead.org, linux-arm-kernel@lists.infradead.org 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 Fri, May 15, 2020 at 12:44:00PM +0200, Jean-Philippe Brucker wrote: > The pci_ats_supported() function checks if a device supports ATS and is > allowed to use it. In addition to checking that the device has an ATS > capability and that the global pci=noats is not set > (pci_ats_disabled()), it also checks if a device is untrusted. Hmm, but per patch 1, pci_ats_supported() does not check pci_ats_disabled(), or do I miss something? Joerg _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu