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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 C103EC982D1 for ; Thu, 17 Sep 2026 13:48:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:MIME-Version:In-Reply-To: Content-Type:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=5qTdMnnT4odmHTa7s1NB9bszrAIAI3NBu27zGyRQ7WE=; b=yjzd5c7XO47uwawfj5kMfhdeb0 YwUu8tLfz2tu+CELHdNL9jFT4v/QQWRbvi9Azuct3xkKcrxUF8xeDPpy52+0BKayqSTuID1440SVy 1T/nOfZ02FyxO0xYwHJuNR4fY8jxYbMocvEZo/s9FrCDoEPglxOZ+R3NSR4oRIBVntgAuQ8imBoBw yU3nd6Z3UphMzhOL93npNjIYVsKX+VAtT3to5j7Jf1MFpKH8s5qCZ0XmLTGrJFSJMmdYU8di2ujW1 Jlxu3t7Fsfop+GmwmADx1SHX2SLs6lJM9zd5TSJmIAv7A5QR6uB60tYkQbv+e8Azn1LyBIlImYUEu B/yLv2sw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x7CTK-0000000BR5n-27Sd; Thu, 17 Sep 2026 13:48:18 +0000 Received: from mail-eastus2azlp170110003.outbound.protection.outlook.com ([2a01:111:f403:c110::3] helo=BN8PR05CU002.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1x7CTG-0000000BR4T-2kkA for linux-arm-kernel@lists.infradead.org; Thu, 17 Sep 2026 13:48:15 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=K8JjNYrAb8ggXSnfsfdYUvysjK8UEPPEdz7gtoyQmRQmevVsbsfH2AdnXPGp80o8HO+u6dXEnQTMAgEiBpJeAUDa7m0V6paPsoRt2ChB0YXkaoMtZx2B3G2hWtguH767omgY08XdFNT2o3smhyLZn6s38QoT71RYW1ye1s2s7f9tp+dXumsfuh5qxKxh5m4ouUJPk8iY8Kgi/MNgA82agDGZWBcHQNE3CxHh+krvTuIMi76Pduq9m/xwzaxGCkdcRKy6nJWfgHX6k4JjhR+nwQyACa0WEwUDPCvhNVRoKhSTHJc9tt4JsIyDlS2RldVF7o0E/CS5cz4fe0SOqgXTGw== 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=5qTdMnnT4odmHTa7s1NB9bszrAIAI3NBu27zGyRQ7WE=; b=P5eVTHOz9HpL4MMxj1fWxMrJLoKH/MnPSGjlOOz9eOcJPXuFPV3SFJD753xQSMcf6g/PliUjpgDsesX4ktGcXg4fmuxOOqeQgwLSueBmUnZqxYjSXpsYi0dTqv4XkNUBnSaAsFd2i6/XM0E/V4JUqQeEZlU23sfh6klVXwIvI2cKrMnkJ0VP5puk2enixwIH1d46aSZXzzj3/LuadBFCPcm+daF6O9AB732zt+jYJba06y0vQZiPqkEsVrVYm3BKsvSYPlS1NXDfG9MGG019qth7SLKXAeKeLdqjmYp4wcjiuKHy5PGnOu/YIhyxp61ZXixaLuUUjwPwngE9OsDRWg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nvidia.com; dmarc=pass action=none header.from=nvidia.com; dkim=pass header.d=nvidia.com; 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=5qTdMnnT4odmHTa7s1NB9bszrAIAI3NBu27zGyRQ7WE=; b=JZfD/ifmaXI9GuNS6YjVm5q/7TMTAuKZjDifj9m64e/WSVbgtqX4mzken5+YQwalek6SGP6FEGe46F+Ebmyu2mxZEanE6p5HqzmypymypF3qOEyq3STgflsPuiYCwWCZ5APjpa1Ni0j6ZVhLPIq0jdqVt6trJN1oH7gdWEoaTMYggrwd4gaprerk/XNORPwx0c4W9N37WQhjM20y9n6klssFIFKfS7R8DYtPlJTBLnGjq0poU9bVrvdz3Atg93ySX/TNUdFJsbZx+Xy39+u4b0QLhzc5e1SUZU37rQLUSRUSSY0KxlQ4GiNeYJbBVJfWJqo33XIObtXElzUGvKIAbg== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nvidia.com; Received: from CHBPR12MB731189.namprd12.prod.outlook.com (2603:10b6:610:33d::12) by IA1PR12MB7760.namprd12.prod.outlook.com (2603:10b6:208:418::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.428.12; Thu, 17 Sep 2026 13:47:56 +0000 Received: from CHBPR12MB731189.namprd12.prod.outlook.com ([fe80::b0e5:123d:fe06:e10d]) by CHBPR12MB731189.namprd12.prod.outlook.com ([fe80::b0e5:123d:fe06:e10d%6]) with mapi id 15.21.0428.011; Thu, 17 Sep 2026 13:47:54 +0000 Date: Thu, 17 Sep 2026 10:47:53 -0300 From: Jason Gunthorpe To: Will Deacon Cc: Mark Rutland , Catalin Marinas , Jonathan Corbet , iommu@lists.linux.dev, "Joerg Roedel (AMD)" , Jean-Philippe Brucker , linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, Randy Dunlap , Robin Murphy , Shuah Khan , David Matlack , Jean-Philippe Brucker , Jonathan Cameron , Nicolin Chen , Pasha Tatashin , patches@lists.linux.dev, Pranjal Shrivastava , Samiullah Khawaja , Mostafa Saleh , stable@vger.kernel.org, Vijayanand Jitta Subject: Re: [PATCH v6 1/9] iommu/arm-smmu-v3: Handle ARM erratum for CONT under invalidation with SVA Message-ID: <20260917134753.GD3968357@nvidia.com> References: <0-v6-9cd17417d355+281836-smmu_tlbi_jgg@nvidia.com> <1-v6-9cd17417d355+281836-smmu_tlbi_jgg@nvidia.com> <20260917131601.GY3968357@nvidia.com> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-ClientProxiedBy: YT4PR01CA0211.CANPRD01.PROD.OUTLOOK.COM (2603:10b6:b01:ad::14) To CHBPR12MB731189.namprd12.prod.outlook.com (2603:10b6:610:33d::12) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CHBPR12MB731189:EE_|IA1PR12MB7760:EE_ X-MS-Office365-Filtering-Correlation-Id: 516342e4-887a-4aab-2b8e-08df14c24629 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|1800799024|23010399003|366016|18002099003|22082099003|10067099003|11063799006|56012099006|4143699003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:CHBPR12MB731189.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(7416014)(376014)(1800799024)(23010399003)(366016)(18002099003)(22082099003)(10067099003)(11063799006)(56012099006)(4143699003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?miRbYCID019VSkR1+d0nxE7iLXWuR0o/jfLA61hqS7PQeptEcwIKAPyHYEiU?= =?us-ascii?Q?Iq0P81rnSAfXCCrhNIusPzmrwJ6cStJ5/XwUTxIPL1tJLAirTT5mQLW84WlM?= =?us-ascii?Q?aTgWja22bqGTw3QPf6x1xg5Enrfefjskn+5JRhpDRtGuHbkm5yFeCOJqO3c3?= =?us-ascii?Q?WAWrNVgX8dbB4CtcPtsH2jm+Px6cuQ/+m72r22c6hVrI9ytlm/YQaRyMQb6B?= =?us-ascii?Q?KTulRZe6mh6phfzmzj254q8MWP3dNFZOWEAiFifdrjuvgD2IDHUif460fAl/?= =?us-ascii?Q?74cYK7NKDw9NWtULpB+7vNde00UBjZV8OKAEDDMX16PFH7Oh/hSc3jjXAn0b?= =?us-ascii?Q?XU/REtXlm2hQmB98Pfpnb21t69Uv8JRyTUOFu3mhDP08HipJqOK0fiqnC/bD?= =?us-ascii?Q?ptHUVNSFlL1TmU+BnUdadpGW99jBibPlVCYEw/rjUSCKjTD2jOF6eSkBFXdB?= =?us-ascii?Q?PyUvpRnqcRnfZfu/NXkljvTAcEXIzSZsEN3xEV779mJrTa2CgC5wMZ2NO4s8?= =?us-ascii?Q?p8UOAyxbK7Dc8GA/seIAy9l76Gf/Hm4iFlHgg93g/3fEDzjeU0rG1hDZwvKL?= =?us-ascii?Q?Bu8YQVFsXya6hU0JqRS5gavX0T/MVhjQfVNyEC7scV+OUkrUVbFonV0TcPP3?= =?us-ascii?Q?ajkBuKNeJfjOHXlCdF++c8JZ/3eg7vn7AGrF+1+G8gLOcZXPfLUKaAHQRjHP?= =?us-ascii?Q?CaG92J0g4Jl1SOQNhCG/7IVFkifuH0wj15hHj4HOVSekJKi3BfAR3u0lVfHl?= =?us-ascii?Q?B+9Hq1fDURVFg9nV5Mclk+34yVXP8i3PVZhS65yGbJsh5cy5xkE09U6ENh09?= =?us-ascii?Q?tOS5dB6XcDVmKe2eGNXCfeCkeim7UIswguTOvMN1BtWiEc/0rjVmu3AJNr3U?= =?us-ascii?Q?C7rhPrcV/J6VyTmWCMX8xLuBs77EIQEtsvQHwy9bXkSKdRubkbi5CNqjOlcQ?= =?us-ascii?Q?+JpxopHZ6Rgj77lhJh+At/3IcLSN7rbKOn7Q28SUx1WdAwX8tOSTS1GZlk4o?= =?us-ascii?Q?eqZPFrAMOdHght8Rtf1Lysmai/lfwr7Psokm0W7OG6H0sF19fiwONLluSrii?= =?us-ascii?Q?UD49ipQZucIy0mujg0Dn+WMdmkykV9/SIgR1BG9ixvJTyPOqh3dftVERlP33?= =?us-ascii?Q?RXNJXFdKJe0ByZmPLBuMJsUHnmESCDrUgLEPobYaxj+I2lnKwrmXsaFItxiv?= =?us-ascii?Q?898xAVjwdWGiFmWmESjjjRyT0AHmaqf2wm8AtUDuAMaTCcq42Ta5BqHOxyeD?= =?us-ascii?Q?ogt2PD7biuCaSjh9Ts1I+A9y6r2xbZYwTRMtGIRjAfnwFfzIkWzsRoQLebxC?= =?us-ascii?Q?n+yAFLJaJVEK3e6BP3BDszz3YiXQ0ZueNuPH6Z/cfVUWrmXOPgRNeXrmOrJA?= =?us-ascii?Q?keOE2JAbwBKkBNIz61rbnYXJWENT9ivSSwy6vVga7n5Nihty8dWTgiv7OskJ?= =?us-ascii?Q?KHmNqhMiR4cgqABa8yPHhY2KXAJmf7pez/g6QYLryeXEfaTfYBsDES3ETGg5?= =?us-ascii?Q?R34cygQ8D16SLC0kVYR+soGO2kLio1Il8FBUuT/fvebV8gQQUql9hyVsMeCy?= =?us-ascii?Q?7g57uXqRFAXrSrxtFWg+WOe18AVYLIVYPPbxQzF18HepRy6a4J2R47PXhyIh?= =?us-ascii?Q?6wTMtcPICn1nVYuB/K91Y4QM7QP7SaULPk+Nh9S8lQZFjUX4/CLTc92oqKhO?= =?us-ascii?Q?W9G679sxcuyiRfi1QCd1S5cmUGguJZRiDuDWH+41i3jnuUef?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 516342e4-887a-4aab-2b8e-08df14c24629 X-MS-Exchange-CrossTenant-AuthSource: CHBPR12MB731189.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 17 Sep 2026 13:47:54.4017 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: MfDkbzbcLAzXHTAfNUHiX9FewRHC+zT2/w04mJb4zkXn+f9rbeETd2wOqGSsvL3B X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR12MB7760 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260917_064814_721420_6AA534A3 X-CRM114-Status: UNSURE ( 8.52 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, Sep 17, 2026 at 02:44:42PM +0100, Will Deacon wrote: > If we can do that without churning the driver (looks like we can), then > it's probably worth it, but I wouldn't be keen on churning existing code > for things like this. Okay, I will churn this series then.. Jason