From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from PH8PR06CU001.outbound.protection.outlook.com (mail-westus3azon11012071.outbound.protection.outlook.com [40.107.209.71]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A806B42087C; Tue, 7 Jul 2026 23:25:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.209.71 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783466741; cv=fail; b=geU4hVL2IdF5Qur4VXArWaHyJuYdmhSijviDGtulV3tbdUCUOjdKkfjhn2mof8lv+VMa7h+1M1Vy3yvF9jyhTRr3EYGQNzhgxUQFB4b40y7qn5er/IIiH4sdUh+rS7CIfgB2Xnmbswz5JL7W+jjEQJFgLdyqLsq5i0g7xaXJU0g= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783466741; c=relaxed/simple; bh=ZHolcFwa+EKXz7/dB6bu2kajjxipSwcuxl/vRrF65uM=; h=Date:From:To:CC:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=nL52CSchtsXLE54mN1H5fM7+65PJ3/dvoiynapu+hws7so3sW/nyiWrkBK8RRrRCauhdPU1KAHaBC7rbI3kfRynXbmmO8R/39+dw/+xzMzR2BkzH61KT2XPYuId7bKyJTD1bvm5E/Axmx0scDUL93SgAMK5fNjYPIAtiEwVW5aM= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nvidia.com; spf=fail smtp.mailfrom=nvidia.com; dkim=pass (2048-bit key) header.d=Nvidia.com header.i=@Nvidia.com header.b=ZJ6wa67r; arc=fail smtp.client-ip=40.107.209.71 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nvidia.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=nvidia.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=Nvidia.com header.i=@Nvidia.com header.b="ZJ6wa67r" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=DTYnJtacax3QiKfLg3C1ELGOD5mYILNdc9StjSkJBOU3L+QQ/jZEzyIY3h/irEoBQxY7+GhYrmB55ewMSZyVXp4UZ3FdYz5JdghF90gynOuigXsczMteO7rnBbdRKnLsE5KaiJx73hbMK88NToUFI9ddc/3+m+6yGzlRZEKlIBMXBd0Sw/xYOqRS1j9Sj/7qLYvWjTuxeC3mCom2gh3Jnrrr14zYsUD/MgIcEfw6scp/hbTI18JJbUwnbXnWj0Pknm9MPZklhTdzmWtqX5Q2dUFwZuzKBglcgrpUUCrVZ8id5tUv516vT9BJlhK2rztPg0BHXM1DMIY1zrDfUHagDA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; 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=FfWNsPy7EpJlUreYI/8DDlbygBjKrfRuhttfKeg2He8=; b=aA/Zm3UypGazcFPw7DZXVpsz89OnygbX5CkouO8X5bQ5ct5shI5aNzb3w7YHkxPf1hmmo0d7DzxbODOihgAU3W5+1h7Ut2IUwrJ6ZhwRNDIwP2gPjyLe4S1rwI74EsbhRCep4jWB8/oB4AWC6nXJDDbaT3Y42sxVJD7C6MZ8mcx63A/Pg845xdrr0Y28wX7Swgw7AJQNyJzKWAjCb6yeY402WQ9ZltwBcKyP6BZwelo91Myuj5c9eRW26waULv4kYaVmBNsQesAfNVMFwMhHaD1dO5rWN2O942yEquETPdmI1R2Yn4GNHS1gWX5BrDZop9eIX7/MqbFe1dmkOVFWQw== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 216.228.117.161) smtp.rcpttodomain=kernel.org smtp.mailfrom=nvidia.com; dmarc=pass (p=reject sp=reject pct=100) action=none header.from=nvidia.com; dkim=none (message not signed); arc=none (0) 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=FfWNsPy7EpJlUreYI/8DDlbygBjKrfRuhttfKeg2He8=; b=ZJ6wa67rmRIAGCOuQe3chFxEyoB2mfdvrjqzJciYsFg3CbVYrAY0Wff6uWIheY4z2OD5mLnpkZN5+KKMJujxq17yF7cwysJQMFaO2kF0+ig265ssrqliyY6jwXDplDzI4sA+OqbkDsTeN4kETRd5Hcmest1llTU6XHtNTeORlDdU1Fa7tCqf9uPx2qVJ7hzjDMdrmjL7JyOZCf50kMTHzlBwN4KKJSM6iOW4diTqdiB3aLUzSaNEw6GVQ91F/2KIgEhuqyrJV6lepzyCwZGt+IkgqO3OsHUlO7usYLh6EuCxc+6tZAeZ6wS8YSLG7PhAVNIW6zrt3Nq6dcYqUXCxQQ== Received: from DS7PR03CA0344.namprd03.prod.outlook.com (2603:10b6:8:55::28) by CH8PR12MB9768.namprd12.prod.outlook.com (2603:10b6:610:260::9) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.181.10; Tue, 7 Jul 2026 23:25:34 +0000 Received: from DS1PEPF0001709C.namprd05.prod.outlook.com (2603:10b6:8:55:cafe::2e) by DS7PR03CA0344.outlook.office365.com (2603:10b6:8:55::28) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.21.181.13 via Frontend Transport; Tue, 7 Jul 2026 23:25:34 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 216.228.117.161) 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 216.228.117.161 as permitted sender) receiver=protection.outlook.com; client-ip=216.228.117.161; helo=mail.nvidia.com; pr=C Received: from mail.nvidia.com (216.228.117.161) by DS1PEPF0001709C.mail.protection.outlook.com (10.167.18.106) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.181.6 via Frontend Transport; Tue, 7 Jul 2026 23:25:33 +0000 Received: from rnnvmail205.nvidia.com (10.129.68.10) by mail.nvidia.com (10.129.200.67) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.20; Tue, 7 Jul 2026 16:25:17 -0700 Received: from rnnvmail202.nvidia.com (10.129.68.7) by rnnvmail205.nvidia.com (10.129.68.10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.20; Tue, 7 Jul 2026 16:25:16 -0700 Received: from Asurada-Nvidia (10.127.8.10) by mail.nvidia.com (10.129.68.7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.20 via Frontend Transport; Tue, 7 Jul 2026 16:25:16 -0700 Date: Tue, 7 Jul 2026 16:25:14 -0700 From: Nicolin Chen To: Ashish Mhetre CC: , , , , , , , Subject: Re: [PATCH v4 2/3] iommu/arm-smmu-v3: Detect Tegra264 erratum Message-ID: References: <20260609073204.1760077-1-amhetre@nvidia.com> <20260609073204.1760077-3-amhetre@nvidia.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20260609073204.1760077-3-amhetre@nvidia.com> X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS1PEPF0001709C:EE_|CH8PR12MB9768:EE_ X-MS-Office365-Filtering-Correlation-Id: 022f7aa6-937e-446f-01f1-08dedc7f0b2b X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|23010399003|82310400026|376014|36860700016|18002099003|22082099003|4143699003|56012099006|11063799006; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.117.161;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge2.nvidia.com;CAT:NONE;SFS:(13230040)(1800799024)(23010399003)(82310400026)(376014)(36860700016)(18002099003)(22082099003)(4143699003)(56012099006)(11063799006);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: rcxWi+TXTG6+gPmOktpoWkkxED+pz1WBQYQq3Fza7Cgu0y3UqCqf0APtpL+Q3gtG8Re+JuloPsui39wMJxl0xsh37rxVMPZsHoeeXhD4C2JELICUtae8NLTDSShdkzzAI24rfV78GDkPcTJL+kxN29L/VmQ8gjdF0LwptORJJLsbtba/TXqHWbXel2qGbu6Kwv8/P+RD4wMegLI4jSlx+C38K4oz3t79s6ZmJ6ogtBA7e8DlcO3uzE/Q569Bo+u3+Fa48HDJtGK8fWQ58K2JVjQIyZyI6Hcfe7f45JA3g2lUiAzuB57NZUa5fWU7SXakmldUkBe7ERQRAT6z2wN3rIKZO+WFJ1KtciU/sY0xfTheWLJ/Wp2WsWOBPsAdep7wiIfxsHU+f33rZAnIbHM/4gzh7Uu5OYw5b3OTQSD6vWx06PaXvX9KMZtnPQuN0c9+ X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Jul 2026 23:25:33.8099 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 022f7aa6-937e-446f-01f1-08dedc7f0b2b X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.161];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DS1PEPF0001709C.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH8PR12MB9768 On Tue, Jun 09, 2026 at 07:32:03AM +0000, Ashish Mhetre wrote: > +arm_smmu_erratum_cmd_needs_repeating(struct arm_smmu_device *smmu, > + struct arm_smmu_cmd *cmd) > +{ [...] > + if (!static_branch_unlikely(&arm_smmu_erratum_repeat_tlbi_cfgi_key)) > + return false; > + if (!(smmu->options & ARM_SMMU_OPT_REPEAT_TLBI_CFGI)) > + return false; Are they redundant? Nicolin