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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id F2135C433F5 for ; Thu, 9 Dec 2021 19:51:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230332AbhLITzX (ORCPT ); Thu, 9 Dec 2021 14:55:23 -0500 Received: from mail-dm3nam07on2066.outbound.protection.outlook.com ([40.107.95.66]:14304 "EHLO NAM02-DM3-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S229774AbhLITzW (ORCPT ); Thu, 9 Dec 2021 14:55:22 -0500 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=GMNDyNCWf8wD9mappMD1wV1rhMSkafr2urQY91O7ghy3H3FdmTfEjRlPfSrUAzOGSO/xdfK1vn68DtMr+EH1L27lBJjMkT7KT/M6pwi2unPZHnFtnenb9IL8rV/ZQ3RADpX/jb00I8SQYzT5Yegp4Z+AvHwl3ANfg745ld4CcigticNoTyJc9EKYpVg1JTpJYg/grGd+e99pbgleOmz8LYegMXInXWaQqcoKeUFagUoz24RpPQsWuc1YDOhfIV6QDd4pWDtLNUbDjLmZLpvfbCrAVRecskrG3xwPD5jleQ6v/IEIkD6oeda3ZHKz4QdqJ9kO/TI/Sa/0JM+hIF/1bg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=oRReX6rrC4qe9FgkRERC6R62kVSq4YtfGMwN53WNlx0=; b=Tr5lZptIm3yeVinxtbiFLJcxdrBPJqWpwhEceSbeJ3hTx6G9RNQ7H25gLkD8FOV79+o2eZZfjnu2/ApXI4fuQ+3153yqNcp1ZgDtyxMOOgbP7CxG7TBjEZ+b9ECls+pxD+U4tKolLMmg7a/Y1HVqVmZsscxsfQe9Zm8o6OXAlKUkZEQGqp7WntpEEvb3wIsJjdMa4JZrGQP7v2uOMv1wRUJrZMMPgoRm8tCtWFrnBOE76N0PcNj18DDKhC7tAMHmTN8IRDB5vRNkR4i1FApc5ux0ooVV/xA7syR7Bp8YrGL1FYtNX4xQhfgJpT467yvQY0iFTiWLqWjQ6WfOX8J2sg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 203.18.50.12) smtp.rcpttodomain=gmail.com smtp.mailfrom=nvidia.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=nvidia.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=oRReX6rrC4qe9FgkRERC6R62kVSq4YtfGMwN53WNlx0=; b=VxrKPg21ghBuhLEDXIfAxN3YnKVG54dDSRwlzc0GA1NA/B2ZalrhOrUhMV3AlG+3nSEAeTuhcgHcE8OuWBjPcDY7gIM8cpvR8qb+eSz67jTGRQiNCIm1F7+mpTA7gNb+gC66HZtiXOyngDzWR5qw8EQycL062ZjX0Av/Kp1BPwb/C91sx7Yl8LeLkXJkCRfpCma6+NzHwOYklFpPjfQ2EAe1Zy12lSPimF2aQmwxjEOQTn+tgBJ9jwbjp26DPOG7LSliGi7EPqImtiSqYyOWmqZ5tmVoHDFABNywyCh78Y+WxEBTC+973ssPnweP1YnNdOhIltxoEo69nxTmlQjg7Q== Received: from BN1PR14CA0018.namprd14.prod.outlook.com (2603:10b6:408:e3::23) by CY4PR1201MB2551.namprd12.prod.outlook.com (2603:10b6:903:d9::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4755.19; Thu, 9 Dec 2021 19:51:47 +0000 Received: from BN8NAM11FT053.eop-nam11.prod.protection.outlook.com (2603:10b6:408:e3:cafe::77) by BN1PR14CA0018.outlook.office365.com (2603:10b6:408:e3::23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4755.21 via Frontend Transport; Thu, 9 Dec 2021 19:51:46 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 203.18.50.12) smtp.mailfrom=nvidia.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=nvidia.com; Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates 203.18.50.12 as permitted sender) receiver=protection.outlook.com; client-ip=203.18.50.12; helo=mail.nvidia.com; Received: from mail.nvidia.com (203.18.50.12) by BN8NAM11FT053.mail.protection.outlook.com (10.13.177.209) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.20.4755.13 via Frontend Transport; Thu, 9 Dec 2021 19:51:46 +0000 Received: from HQMAIL111.nvidia.com (172.20.187.18) by HKMAIL101.nvidia.com (10.18.16.10) with Microsoft SMTP Server (TLS) id 15.0.1497.18; Thu, 9 Dec 2021 19:51:33 +0000 Received: from HQMAIL109.nvidia.com (172.20.187.15) by HQMAIL111.nvidia.com (172.20.187.18) with Microsoft SMTP Server (TLS) id 15.0.1497.18; Thu, 9 Dec 2021 19:51:31 +0000 Received: from Asurada-Nvidia (172.20.187.5) by mail.nvidia.com (172.20.187.15) with Microsoft SMTP Server (TLS) id 15.0.1497.18 via Frontend Transport; Thu, 9 Dec 2021 11:51:30 -0800 Date: Thu, 9 Dec 2021 11:51:29 -0800 From: Nicolin Chen To: Dmitry Osipenko CC: , , , , , , , Subject: Re: [PATCH v8 6/6] iommu/tegra-smmu: Add pagetable mappings to debugfs Message-ID: <20211209195128.GA35526@Asurada-Nvidia> References: <20211209073822.26728-1-nicolinc@nvidia.com> <20211209073822.26728-7-nicolinc@nvidia.com> <5713902d-823b-63ca-00c9-aa6c64c1af41@gmail.com> <20211209193253.GB34762@Asurada-Nvidia> <97a32c9a-2ec7-6579-7d8d-026d6f820a3e@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <97a32c9a-2ec7-6579-7d8d-026d6f820a3e@gmail.com> User-Agent: Mutt/1.9.4 (2018-02-28) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: cc928aa1-9a6c-4508-97fa-08d9bb4d554a X-MS-TrafficTypeDiagnostic: CY4PR1201MB2551:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:10000; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:203.18.50.12;CTRY:HK;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:hkhybrid01.nvidia.com;CAT:NONE;SFS:(4636009)(46966006)(36840700001)(40470700001)(54906003)(1076003)(33716001)(9686003)(7636003)(356005)(316002)(5660300002)(33656002)(86362001)(8676002)(4326008)(8936002)(36860700001)(55016003)(70586007)(40460700001)(47076005)(82310400004)(2906002)(426003)(83380400001)(336012)(70206006)(6916009)(186003)(26005)(508600001)(34020700004);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Dec 2021 19:51:46.2463 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: cc928aa1-9a6c-4508-97fa-08d9bb4d554a X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[203.18.50.12];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT053.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR1201MB2551 Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org On Thu, Dec 09, 2021 at 10:40:42PM +0300, Dmitry Osipenko wrote: > External email: Use caution opening links or attachments > > > 09.12.2021 22:32, Nicolin Chen пишет: > > On Thu, Dec 09, 2021 at 05:47:18PM +0300, Dmitry Osipenko wrote: > >> External email: Use caution opening links or attachments > >> > >> > >> 09.12.2021 10:38, Nicolin Chen пишет: > >>> @@ -545,6 +719,15 @@ static void tegra_smmu_detach_as(struct tegra_smmu *smmu, > >>> if (group->swgrp != swgrp) > >>> continue; > >>> group->as = NULL; > >>> + > >>> + if (smmu->debugfs_mappings) { > >> Do we really need this check? > >> > >> Looks like all debugfs_create_dir() usages in this driver are incorrect, > >> that function never returns NULL. Please fix this. > > debugfs_create_dir returns ERR_PTR on failure. So here should be > > to check !IS_ERR. Thanks for pointing it out! > > > > All debugfs functions handle IS_ERR(). GregKH removes all such checks > all over the kernel. So the check shouldn't be needed at all, please > remove it if it's unneeded or prove that it's needed. debugfs_create_file can handle a NULL parent, but not ERR_PTR one, and then it puts the new node under the root. So either passing an ERR_PTR parent or creating orphan nodes here doesn't sound good... 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 Received: from smtp3.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 smtp.lore.kernel.org (Postfix) with ESMTPS id 30663C433F5 for ; Thu, 9 Dec 2021 19:51:53 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id C408E6F8B8; Thu, 9 Dec 2021 19:51:52 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id m4RphaxnfHWW; Thu, 9 Dec 2021 19:51:52 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [IPv6:2605:bc80:3010:104::8cd3:938]) by smtp3.osuosl.org (Postfix) with ESMTPS id 9D1DC6F8B6; Thu, 9 Dec 2021 19:51:51 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 74DF0C001E; Thu, 9 Dec 2021 19:51:51 +0000 (UTC) Received: from smtp3.osuosl.org (smtp3.osuosl.org [140.211.166.136]) by lists.linuxfoundation.org (Postfix) with ESMTP id 90E76C0012 for ; Thu, 9 Dec 2021 19:51:50 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id 85A026F8B8 for ; Thu, 9 Dec 2021 19:51:50 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id K1DXNz8i1Kwt for ; Thu, 9 Dec 2021 19:51:49 +0000 (UTC) X-Greylist: whitelisted by SQLgrey-1.8.0 Received: from NAM12-BN8-obe.outbound.protection.outlook.com (mail-bn8nam12on20616.outbound.protection.outlook.com [IPv6:2a01:111:f400:fe5b::616]) by smtp3.osuosl.org (Postfix) with ESMTPS id B4F736F8B6 for ; Thu, 9 Dec 2021 19:51:49 +0000 (UTC) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=GMNDyNCWf8wD9mappMD1wV1rhMSkafr2urQY91O7ghy3H3FdmTfEjRlPfSrUAzOGSO/xdfK1vn68DtMr+EH1L27lBJjMkT7KT/M6pwi2unPZHnFtnenb9IL8rV/ZQ3RADpX/jb00I8SQYzT5Yegp4Z+AvHwl3ANfg745ld4CcigticNoTyJc9EKYpVg1JTpJYg/grGd+e99pbgleOmz8LYegMXInXWaQqcoKeUFagUoz24RpPQsWuc1YDOhfIV6QDd4pWDtLNUbDjLmZLpvfbCrAVRecskrG3xwPD5jleQ6v/IEIkD6oeda3ZHKz4QdqJ9kO/TI/Sa/0JM+hIF/1bg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=oRReX6rrC4qe9FgkRERC6R62kVSq4YtfGMwN53WNlx0=; b=Tr5lZptIm3yeVinxtbiFLJcxdrBPJqWpwhEceSbeJ3hTx6G9RNQ7H25gLkD8FOV79+o2eZZfjnu2/ApXI4fuQ+3153yqNcp1ZgDtyxMOOgbP7CxG7TBjEZ+b9ECls+pxD+U4tKolLMmg7a/Y1HVqVmZsscxsfQe9Zm8o6OXAlKUkZEQGqp7WntpEEvb3wIsJjdMa4JZrGQP7v2uOMv1wRUJrZMMPgoRm8tCtWFrnBOE76N0PcNj18DDKhC7tAMHmTN8IRDB5vRNkR4i1FApc5ux0ooVV/xA7syR7Bp8YrGL1FYtNX4xQhfgJpT467yvQY0iFTiWLqWjQ6WfOX8J2sg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 203.18.50.12) smtp.rcpttodomain=gmail.com smtp.mailfrom=nvidia.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=nvidia.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=oRReX6rrC4qe9FgkRERC6R62kVSq4YtfGMwN53WNlx0=; b=VxrKPg21ghBuhLEDXIfAxN3YnKVG54dDSRwlzc0GA1NA/B2ZalrhOrUhMV3AlG+3nSEAeTuhcgHcE8OuWBjPcDY7gIM8cpvR8qb+eSz67jTGRQiNCIm1F7+mpTA7gNb+gC66HZtiXOyngDzWR5qw8EQycL062ZjX0Av/Kp1BPwb/C91sx7Yl8LeLkXJkCRfpCma6+NzHwOYklFpPjfQ2EAe1Zy12lSPimF2aQmwxjEOQTn+tgBJ9jwbjp26DPOG7LSliGi7EPqImtiSqYyOWmqZ5tmVoHDFABNywyCh78Y+WxEBTC+973ssPnweP1YnNdOhIltxoEo69nxTmlQjg7Q== Received: from BN1PR14CA0018.namprd14.prod.outlook.com (2603:10b6:408:e3::23) by CY4PR1201MB2551.namprd12.prod.outlook.com (2603:10b6:903:d9::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4755.19; Thu, 9 Dec 2021 19:51:47 +0000 Received: from BN8NAM11FT053.eop-nam11.prod.protection.outlook.com (2603:10b6:408:e3:cafe::77) by BN1PR14CA0018.outlook.office365.com (2603:10b6:408:e3::23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4755.21 via Frontend Transport; Thu, 9 Dec 2021 19:51:46 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 203.18.50.12) smtp.mailfrom=nvidia.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=nvidia.com; Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates 203.18.50.12 as permitted sender) receiver=protection.outlook.com; client-ip=203.18.50.12; helo=mail.nvidia.com; Received: from mail.nvidia.com (203.18.50.12) by BN8NAM11FT053.mail.protection.outlook.com (10.13.177.209) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.20.4755.13 via Frontend Transport; Thu, 9 Dec 2021 19:51:46 +0000 Received: from HQMAIL111.nvidia.com (172.20.187.18) by HKMAIL101.nvidia.com (10.18.16.10) with Microsoft SMTP Server (TLS) id 15.0.1497.18; Thu, 9 Dec 2021 19:51:33 +0000 Received: from HQMAIL109.nvidia.com (172.20.187.15) by HQMAIL111.nvidia.com (172.20.187.18) with Microsoft SMTP Server (TLS) id 15.0.1497.18; Thu, 9 Dec 2021 19:51:31 +0000 Received: from Asurada-Nvidia (172.20.187.5) by mail.nvidia.com (172.20.187.15) with Microsoft SMTP Server (TLS) id 15.0.1497.18 via Frontend Transport; Thu, 9 Dec 2021 11:51:30 -0800 Date: Thu, 9 Dec 2021 11:51:29 -0800 To: Dmitry Osipenko Subject: Re: [PATCH v8 6/6] iommu/tegra-smmu: Add pagetable mappings to debugfs Message-ID: <20211209195128.GA35526@Asurada-Nvidia> References: <20211209073822.26728-1-nicolinc@nvidia.com> <20211209073822.26728-7-nicolinc@nvidia.com> <5713902d-823b-63ca-00c9-aa6c64c1af41@gmail.com> <20211209193253.GB34762@Asurada-Nvidia> <97a32c9a-2ec7-6579-7d8d-026d6f820a3e@gmail.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <97a32c9a-2ec7-6579-7d8d-026d6f820a3e@gmail.com> User-Agent: Mutt/1.9.4 (2018-02-28) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: cc928aa1-9a6c-4508-97fa-08d9bb4d554a X-MS-TrafficTypeDiagnostic: CY4PR1201MB2551:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:10000; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:203.18.50.12; CTRY:HK; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:mail.nvidia.com; PTR:hkhybrid01.nvidia.com; CAT:NONE; SFS:(4636009)(46966006)(36840700001)(40470700001)(54906003)(1076003)(33716001)(9686003)(7636003)(356005)(316002)(5660300002)(33656002)(86362001)(8676002)(4326008)(8936002)(36860700001)(55016003)(70586007)(40460700001)(47076005)(82310400004)(2906002)(426003)(83380400001)(336012)(70206006)(6916009)(186003)(26005)(508600001)(34020700004); DIR:OUT; SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Dec 2021 19:51:46.2463 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: cc928aa1-9a6c-4508-97fa-08d9bb4d554a X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a; Ip=[203.18.50.12]; Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT053.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR1201MB2551 Cc: linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, jonathanh@nvidia.com, thierry.reding@gmail.com, linux-tegra@vger.kernel.org, will@kernel.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: , From: Nicolin Chen via iommu Reply-To: Nicolin Chen Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" T24gVGh1LCBEZWMgMDksIDIwMjEgYXQgMTA6NDA6NDJQTSArMDMwMCwgRG1pdHJ5IE9zaXBlbmtv IHdyb3RlOgo+IEV4dGVybmFsIGVtYWlsOiBVc2UgY2F1dGlvbiBvcGVuaW5nIGxpbmtzIG9yIGF0 dGFjaG1lbnRzCj4gCj4gCj4gMDkuMTIuMjAyMSAyMjozMiwgTmljb2xpbiBDaGVuINC/0LjRiNC1 0YI6Cj4gPiBPbiBUaHUsIERlYyAwOSwgMjAyMSBhdCAwNTo0NzoxOFBNICswMzAwLCBEbWl0cnkg T3NpcGVua28gd3JvdGU6Cj4gPj4gRXh0ZXJuYWwgZW1haWw6IFVzZSBjYXV0aW9uIG9wZW5pbmcg bGlua3Mgb3IgYXR0YWNobWVudHMKPiA+Pgo+ID4+Cj4gPj4gMDkuMTIuMjAyMSAxMDozOCwgTmlj b2xpbiBDaGVuINC/0LjRiNC10YI6Cj4gPj4+IEBAIC01NDUsNiArNzE5LDE1IEBAIHN0YXRpYyB2 b2lkIHRlZ3JhX3NtbXVfZGV0YWNoX2FzKHN0cnVjdCB0ZWdyYV9zbW11ICpzbW11LAo+ID4+PiAg ICAgICAgICAgICAgIGlmIChncm91cC0+c3dncnAgIT0gc3dncnApCj4gPj4+ICAgICAgICAgICAg ICAgICAgICAgICBjb250aW51ZTsKPiA+Pj4gICAgICAgICAgICAgICBncm91cC0+YXMgPSBOVUxM Owo+ID4+PiArCj4gPj4+ICsgICAgICAgICAgICAgaWYgKHNtbXUtPmRlYnVnZnNfbWFwcGluZ3Mp IHsKPiA+PiBEbyB3ZSByZWFsbHkgbmVlZCB0aGlzIGNoZWNrPwo+ID4+Cj4gPj4gTG9va3MgbGlr ZSBhbGwgZGVidWdmc19jcmVhdGVfZGlyKCkgdXNhZ2VzIGluIHRoaXMgZHJpdmVyIGFyZSBpbmNv cnJlY3QsCj4gPj4gdGhhdCBmdW5jdGlvbiBuZXZlciByZXR1cm5zIE5VTEwuIFBsZWFzZSBmaXgg dGhpcy4KPiA+IGRlYnVnZnNfY3JlYXRlX2RpciByZXR1cm5zIEVSUl9QVFIgb24gZmFpbHVyZS4g U28gaGVyZSBzaG91bGQgYmUKPiA+IHRvIGNoZWNrICFJU19FUlIuIFRoYW5rcyBmb3IgcG9pbnRp bmcgaXQgb3V0IQo+ID4KPiAKPiBBbGwgZGVidWdmcyBmdW5jdGlvbnMgaGFuZGxlIElTX0VSUigp LiBHcmVnS0ggcmVtb3ZlcyBhbGwgc3VjaCBjaGVja3MKPiBhbGwgb3ZlciB0aGUga2VybmVsLiBT byB0aGUgY2hlY2sgc2hvdWxkbid0IGJlIG5lZWRlZCBhdCBhbGwsIHBsZWFzZQo+IHJlbW92ZSBp dCBpZiBpdCdzIHVubmVlZGVkIG9yIHByb3ZlIHRoYXQgaXQncyBuZWVkZWQuCgpkZWJ1Z2ZzX2Ny ZWF0ZV9maWxlIGNhbiBoYW5kbGUgYSBOVUxMIHBhcmVudCwgYnV0IG5vdCBFUlJfUFRSIG9uZSwK YW5kIHRoZW4gaXQgcHV0cyB0aGUgbmV3IG5vZGUgdW5kZXIgdGhlIHJvb3QuIFNvIGVpdGhlciBw YXNzaW5nIGFuCkVSUl9QVFIgcGFyZW50IG9yIGNyZWF0aW5nIG9ycGhhbiBub2RlcyBoZXJlIGRv ZXNuJ3Qgc291bmQgZ29vZC4uLgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fXwppb21tdSBtYWlsaW5nIGxpc3QKaW9tbXVAbGlzdHMubGludXgtZm91bmRhdGlv bi5vcmcKaHR0cHM6Ly9saXN0cy5saW51eGZvdW5kYXRpb24ub3JnL21haWxtYW4vbGlzdGluZm8v aW9tbXU=