From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from NAM11-BN8-obe.outbound.protection.outlook.com (mail-bn8nam11on2041.outbound.protection.outlook.com [40.107.236.41]) (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 40DB741C75; Tue, 13 Feb 2024 14:00:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.236.41 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707832839; cv=fail; b=Tx98gjkD4kgkfajWa0wbCGc6jZ8xe1yfo0DGYdSowy9mvOfYxux3wWQSYes36UO8xxSMwj9+y3I8GljVJ15+7TKFaxHl5X4sX9Dx9cpiPytlO20y3YYt2V7piehZEFYrulJoK8uZWPOkPqQGk8iqAzYD9ueqRmRue/iJ2eVwUJk= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707832839; c=relaxed/simple; bh=A3F30XF0C/j0Ai2ylnqq8EMvK3LUI0SrU7CgxUM7nU8=; h=Date:From:To:Cc:Subject:Message-ID:References:Content-Type: Content-Disposition:In-Reply-To:MIME-Version; b=o2IenAed32CJS3/J1Z8zbmNtH/TTSlozeRMERk+9XLrBpu+gewEkUpRHQLM2Pfg5quZgiEvdeH/RC+AsmhraSZafYPg4fzdoY86KaBcU5sSabjpsaFldpwdTtsqMjkA81MS8c/Xf3sfIaF2jR2g4Kqj3CjOCAGzU4qTNEp7VL8c= 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=BVV3srEm; arc=fail smtp.client-ip=40.107.236.41 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="BVV3srEm" ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=ALRQtrW5FPHgj40q2rAqdI4hk+qYAQLXjAy3dwyEbiKjGWFbfgEAJqcE7Q6jhryhSaYFs7ZfNBcAQgDhXOvbwJqiVEXkNuHOxC6QO5iOu9K7ANFBu0wN57Cm+MqJ+kufT/Lpu8O4qdyPEtxDdG6cmxfEpJfBBShzCQpJ1dJ3Fk8SB7B2GQ+6RvEzj22eOsLnofX7QoWsy3oxMTimah7nB8K+feGLfE6Zf/hFRJMQDa64ZYqPucCUUB1SNBw4SUqNtW6LO+/j7PlLv9ewUOkY3Z2gbNc3MxNGc+xdpidgIS1OJ4w+1yJimvV2slYO8UDHMOvIA7939JbGhKQS3WBvXQ== 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=A3F30XF0C/j0Ai2ylnqq8EMvK3LUI0SrU7CgxUM7nU8=; b=TlIPjwZmPmcEGwXqNoVC70T/JHCQ8+j3GXBIdjwzhctaqynYn0I1j6aplHKdZ7Se03zGkZiTJ19tLph105x2lE6nL2nAeoH/2hqfkw4dLRavn9GmTQ8mLUBZn6cCeiPXLRFDT/9s+d422Yrt7ItF0fTgR1dRa2VqUKO3PdTh+C9j9ieCVyCEz/hUQwY2qxC43Q1+gSwUSaibU6kl66f58BmKoJ7SLRhJsjHzreI4Wrkg+gxwAc5qEYjRV/2BwjVl+yG2DLTMACrJTPPL7gT8F9EjsZyfq0DUHUZ7v666hsIe9MLchKZmnAyTSbGXTvk3Xns69rwF9s8WWpzi7KupCA== 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=A3F30XF0C/j0Ai2ylnqq8EMvK3LUI0SrU7CgxUM7nU8=; b=BVV3srEm0OD7r2W+d8c4wzte6kEBQSHY95l0FBD/4xXQg/dhvG762pIEIuc3rRr6sbDSyL4F6GN5o84Y08DIDqfK0wqyKpZAcRIUEgV8tkmrJEbkpJyW5zqb2D11sYaZh46sRFisgIbAwpB8m0bbDoKYA8vAegJTKSSHGahIiwulGbnIr2s5+PnIyXon+ksgYavbavfTM5z/OnWIwqhK8lW11+Y+kdwbjtlB51ZE5qFmqvZ5AvuK+41in7iGLUb351AyJUE/R9clhpyix0d53uixzoYBLV2G3zj/J1oAc4m1wpYj1U6qoLWEDgC527XoILTHxivAUvCgaaGzHMnrbA== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nvidia.com; Received: from LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) by LV3PR12MB9186.namprd12.prod.outlook.com (2603:10b6:408:197::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7292.24; Tue, 13 Feb 2024 14:00:35 +0000 Received: from LV2PR12MB5869.namprd12.prod.outlook.com ([fe80::96dd:1160:6472:9873]) by LV2PR12MB5869.namprd12.prod.outlook.com ([fe80::96dd:1160:6472:9873%6]) with mapi id 15.20.7292.022; Tue, 13 Feb 2024 14:00:35 +0000 Date: Tue, 13 Feb 2024 10:00:33 -0400 From: Jason Gunthorpe To: Will Deacon Cc: iommu@lists.linux.dev, Joerg Roedel , linux-arm-kernel@lists.infradead.org, Robin Murphy , Dan Carpenter , Michael Shavit , Nicolin Chen , patches@lists.linux.dev Subject: Re: [PATCH rc] iommu/arm-smmu-v3: Do not use GFP_KERNEL under as spinlock Message-ID: <20240213140033.GB989297@nvidia.com> References: <0-v1-210234560de7+69a-smmu_cd_atomic_jgg@nvidia.com> <20240208125846.GA23290@willie-the-truck> <20240208142729.GH10476@nvidia.com> <20240213112015.GB28517@willie-the-truck> <20240213121850.GH4048826@nvidia.com> <20240213125456.GA28844@willie-the-truck> <20240213133045.GA989297@nvidia.com> <20240213135627.GD28926@willie-the-truck> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240213135627.GD28926@willie-the-truck> X-ClientProxiedBy: SN6PR16CA0037.namprd16.prod.outlook.com (2603:10b6:805:ca::14) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|LV3PR12MB9186:EE_ X-MS-Office365-Filtering-Correlation-Id: 1d914cc7-d7da-4e75-82ca-08dc2c9c264b 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:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:LV2PR12MB5869.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(39860400002)(396003)(136003)(346002)(376002)(366004)(84040400005)(230922051799003)(451199024)(186009)(64100799003)(1800799012)(86362001)(54906003)(38100700002)(6486002)(478600001)(316002)(6916009)(66946007)(66476007)(2616005)(6506007)(66556008)(26005)(1076003)(33656002)(36756003)(6512007)(8936002)(4744005)(4326008)(8676002)(41300700001)(2906002)(5660300002);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?0K17dY2wNE6y8G4c2YL65qANktiDkfsD+E2t40vI8JPbYI+UYaVgtFcHl+pq?= =?us-ascii?Q?j5qOaftEfjLPvjxRCK33tlQiknAF+1MhphXxLIley4Go1Kf9ZVCBr0ceFCu2?= =?us-ascii?Q?s8MqJqBzCVNpK80LOnhBmYVdDp5bHnRwMPXmimTekosewmzJkMn1DaNiTJaX?= =?us-ascii?Q?LXdIt63tbbKkdI0gq8ej5GDP+b/t67FRkVMtb8qG/kXCeNXi58DzfUTeL0q7?= =?us-ascii?Q?8CR5sAXhVfVDx56cFUGADm8o1fItYxwSS180rVGgWzr1Oa1eEoMgxEkzFoq+?= =?us-ascii?Q?XtkHJX14SxQTnluMCbTN2v/VpxdIzehlvbwAeXaOvTORqo2IaLmE8z1XGfBV?= =?us-ascii?Q?xcuQz48z/a3yHiO2flnip+ooQ7MncMa/0Ofv+15ybXTGHBa7K0p9wnpkg9Hl?= =?us-ascii?Q?EXysLlq53IUfhbKsyEXk9+2fu6V3MKVVzz9Iyr9QJSrda/OkqGBJf3tZDJbC?= =?us-ascii?Q?AV9H4iPyF/mhUNAHCf/pEU6Cd/BEUwqohE5iw2tZpR/HxXfmeXjwXtRpr6M1?= =?us-ascii?Q?m+oxzhRnjeYIKiKbO7mbXiD0odFl2JIrrRUw0Aen5XibgdiFUcOLwOVy86n4?= =?us-ascii?Q?Iz5XkFALT92rxEfhwZv1Uk3Da28IEJFQhk4GAN/w3ppuETuanvRz0MwOTlpU?= =?us-ascii?Q?pO3W2LFgCTVDbq9lMFXckdoodnqWCFLKznPV+h3X5rvYvQW/Ttg3YLojKGNW?= =?us-ascii?Q?50uO2k4mxKNQRvBFjC0NFZnFXE5iKl8vVUzWxfWpI5gEXcv17EsOHiwsBRYI?= =?us-ascii?Q?vUc7rYjSDxwFUuWVxf6XyhfSzoddIezQu4biBK6uJqedC0Nxv4bAC5jJCpNS?= =?us-ascii?Q?7eMrCkYgvEb+6jGp3VwDyk2RspSPCCYs9prs213JB2ZkosdwteNUtBSPsLdj?= =?us-ascii?Q?eYbaLY0WFvzVnhTy8Gn37tsjuwV/0rl3TK6vdAE1O2tFbdu+5QJ1eIKca6W3?= =?us-ascii?Q?/B/uLmfdUpV1ceu9QeRXyMxfkKfipBKFsfGbBm+rXFDlVq38FOC27MI+ZZYZ?= =?us-ascii?Q?FQUJvs65IeFUVgOv6Mz/kzNPlfKWbpxNPZQ5wJ/sjI1UQBHzNtOidBgJIG50?= =?us-ascii?Q?JIIB6yWyJ4ulo5Viig8xaqocspbJwEXtdLxvGxrFhEv+VW46FnX9c7LzBPW/?= =?us-ascii?Q?rIMqoofn99dPNVwlYec0F4ovBA+HuF2uZfOjipWL1gIUfUynS6YJq780b+qs?= =?us-ascii?Q?of00u0YjNETZ8xDd34Dc8ftx1IkxmwuBQSiB4sWzZylLmD7iTy7hnhefnlvo?= =?us-ascii?Q?ubgkkHA6ybIA2NilaLbWo5pniYPQod04o8HoBQ9nUPDRGRZQ15c4qTxyYrFH?= =?us-ascii?Q?fWUKpxP4gYUpwzQMqwLHp0HLFv3S/+f9y66PVyd5k1htvczrltrAQTPjitcD?= =?us-ascii?Q?MQCanQiLCGsz7HL0Aeu+utvpxycZV6m/aZ+iDp6Wsj9HGw8aBQGS7K/WMtTG?= =?us-ascii?Q?1j01Wh0lpRdb0xB5M0B43FBgONssOW6Zzw3t6snOCoPV6mhy0rVQNVjSbK6G?= =?us-ascii?Q?kcjkNNhufFaWKyPcpUjjO6y0uVLAIpqoxSVdcGBIQtnSMghGt7y6LtmLsaQX?= =?us-ascii?Q?hQvf2OEo06nGYdq5Oyoi7a3DgHbvM1+rwlQIlnuE?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 1d914cc7-d7da-4e75-82ca-08dc2c9c264b X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Feb 2024 14:00:34.9950 (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: 7O75rToO3cm1LWppXxGDQOCmvHf6XVjIPKQmExc/vJzer+7Tq38T/HGAy9FANcbH X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV3PR12MB9186 On Tue, Feb 13, 2024 at 01:56:28PM +0000, Will Deacon wrote: > I can write it as a full patch if you prefer (and I'll need your help to > test it), but I was really hoping to continue the discussion so you could > spin a v2. No worries, I'll take care of it, just need to understand what we have agreed. Jason 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 C017EC48260 for ; Tue, 13 Feb 2024 14:01:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:In-Reply-To:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=t+Me+CGcGTc98r8ZX36EyiYjDhMq04on56QJ+RGAvxA=; b=GYgPFWpI+sLkR4 Mgr6x07aZbGgZTJfM+X53lEGM6lSJarDyVaSzKagP6/c3r9vDZN3pYZsbltk/NW2hdTP1bLaqPPEB wClOw2fzg3md8GrCRaL3G7R9ZAV4JDW9tgzusDzHubsNFAPUjkJVASYOzRT7bC5BbcGVQlO45xFAD +sUyczJVmvNG43HziLCjZdTCFB4z0eHN/cais4dGUmyxUG7ssQpIzSBLUD5qGwton6GO7Vgtrs0L7 2jHXuxPv/teT12nYhC23lkt4SxR2ip8LswCBLdAomlz6nXvmG6ud9KnGJ20B8N8jrYw2RKjEIsD0d nMxSKTMUCz+z7gbWsWJA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rZtLU-00000009QSX-2XCh; Tue, 13 Feb 2024 14:01:12 +0000 Received: from mail-bn8nam11on20600.outbound.protection.outlook.com ([2a01:111:f403:2414::600] helo=NAM11-BN8-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rZtL9-00000009QNj-0dkM for linux-arm-kernel@lists.infradead.org; Tue, 13 Feb 2024 14:01:10 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=ALRQtrW5FPHgj40q2rAqdI4hk+qYAQLXjAy3dwyEbiKjGWFbfgEAJqcE7Q6jhryhSaYFs7ZfNBcAQgDhXOvbwJqiVEXkNuHOxC6QO5iOu9K7ANFBu0wN57Cm+MqJ+kufT/Lpu8O4qdyPEtxDdG6cmxfEpJfBBShzCQpJ1dJ3Fk8SB7B2GQ+6RvEzj22eOsLnofX7QoWsy3oxMTimah7nB8K+feGLfE6Zf/hFRJMQDa64ZYqPucCUUB1SNBw4SUqNtW6LO+/j7PlLv9ewUOkY3Z2gbNc3MxNGc+xdpidgIS1OJ4w+1yJimvV2slYO8UDHMOvIA7939JbGhKQS3WBvXQ== 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=A3F30XF0C/j0Ai2ylnqq8EMvK3LUI0SrU7CgxUM7nU8=; b=TlIPjwZmPmcEGwXqNoVC70T/JHCQ8+j3GXBIdjwzhctaqynYn0I1j6aplHKdZ7Se03zGkZiTJ19tLph105x2lE6nL2nAeoH/2hqfkw4dLRavn9GmTQ8mLUBZn6cCeiPXLRFDT/9s+d422Yrt7ItF0fTgR1dRa2VqUKO3PdTh+C9j9ieCVyCEz/hUQwY2qxC43Q1+gSwUSaibU6kl66f58BmKoJ7SLRhJsjHzreI4Wrkg+gxwAc5qEYjRV/2BwjVl+yG2DLTMACrJTPPL7gT8F9EjsZyfq0DUHUZ7v666hsIe9MLchKZmnAyTSbGXTvk3Xns69rwF9s8WWpzi7KupCA== 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=A3F30XF0C/j0Ai2ylnqq8EMvK3LUI0SrU7CgxUM7nU8=; b=BVV3srEm0OD7r2W+d8c4wzte6kEBQSHY95l0FBD/4xXQg/dhvG762pIEIuc3rRr6sbDSyL4F6GN5o84Y08DIDqfK0wqyKpZAcRIUEgV8tkmrJEbkpJyW5zqb2D11sYaZh46sRFisgIbAwpB8m0bbDoKYA8vAegJTKSSHGahIiwulGbnIr2s5+PnIyXon+ksgYavbavfTM5z/OnWIwqhK8lW11+Y+kdwbjtlB51ZE5qFmqvZ5AvuK+41in7iGLUb351AyJUE/R9clhpyix0d53uixzoYBLV2G3zj/J1oAc4m1wpYj1U6qoLWEDgC527XoILTHxivAUvCgaaGzHMnrbA== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nvidia.com; Received: from LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) by LV3PR12MB9186.namprd12.prod.outlook.com (2603:10b6:408:197::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7292.24; Tue, 13 Feb 2024 14:00:35 +0000 Received: from LV2PR12MB5869.namprd12.prod.outlook.com ([fe80::96dd:1160:6472:9873]) by LV2PR12MB5869.namprd12.prod.outlook.com ([fe80::96dd:1160:6472:9873%6]) with mapi id 15.20.7292.022; Tue, 13 Feb 2024 14:00:35 +0000 Date: Tue, 13 Feb 2024 10:00:33 -0400 From: Jason Gunthorpe To: Will Deacon Cc: iommu@lists.linux.dev, Joerg Roedel , linux-arm-kernel@lists.infradead.org, Robin Murphy , Dan Carpenter , Michael Shavit , Nicolin Chen , patches@lists.linux.dev Subject: Re: [PATCH rc] iommu/arm-smmu-v3: Do not use GFP_KERNEL under as spinlock Message-ID: <20240213140033.GB989297@nvidia.com> References: <0-v1-210234560de7+69a-smmu_cd_atomic_jgg@nvidia.com> <20240208125846.GA23290@willie-the-truck> <20240208142729.GH10476@nvidia.com> <20240213112015.GB28517@willie-the-truck> <20240213121850.GH4048826@nvidia.com> <20240213125456.GA28844@willie-the-truck> <20240213133045.GA989297@nvidia.com> <20240213135627.GD28926@willie-the-truck> Content-Disposition: inline In-Reply-To: <20240213135627.GD28926@willie-the-truck> X-ClientProxiedBy: SN6PR16CA0037.namprd16.prod.outlook.com (2603:10b6:805:ca::14) To LV2PR12MB5869.namprd12.prod.outlook.com (2603:10b6:408:176::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LV2PR12MB5869:EE_|LV3PR12MB9186:EE_ X-MS-Office365-Filtering-Correlation-Id: 1d914cc7-d7da-4e75-82ca-08dc2c9c264b 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:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:LV2PR12MB5869.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(39860400002)(396003)(136003)(346002)(376002)(366004)(84040400005)(230922051799003)(451199024)(186009)(64100799003)(1800799012)(86362001)(54906003)(38100700002)(6486002)(478600001)(316002)(6916009)(66946007)(66476007)(2616005)(6506007)(66556008)(26005)(1076003)(33656002)(36756003)(6512007)(8936002)(4744005)(4326008)(8676002)(41300700001)(2906002)(5660300002);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?0K17dY2wNE6y8G4c2YL65qANktiDkfsD+E2t40vI8JPbYI+UYaVgtFcHl+pq?= =?us-ascii?Q?j5qOaftEfjLPvjxRCK33tlQiknAF+1MhphXxLIley4Go1Kf9ZVCBr0ceFCu2?= =?us-ascii?Q?s8MqJqBzCVNpK80LOnhBmYVdDp5bHnRwMPXmimTekosewmzJkMn1DaNiTJaX?= =?us-ascii?Q?LXdIt63tbbKkdI0gq8ej5GDP+b/t67FRkVMtb8qG/kXCeNXi58DzfUTeL0q7?= =?us-ascii?Q?8CR5sAXhVfVDx56cFUGADm8o1fItYxwSS180rVGgWzr1Oa1eEoMgxEkzFoq+?= =?us-ascii?Q?XtkHJX14SxQTnluMCbTN2v/VpxdIzehlvbwAeXaOvTORqo2IaLmE8z1XGfBV?= =?us-ascii?Q?xcuQz48z/a3yHiO2flnip+ooQ7MncMa/0Ofv+15ybXTGHBa7K0p9wnpkg9Hl?= =?us-ascii?Q?EXysLlq53IUfhbKsyEXk9+2fu6V3MKVVzz9Iyr9QJSrda/OkqGBJf3tZDJbC?= =?us-ascii?Q?AV9H4iPyF/mhUNAHCf/pEU6Cd/BEUwqohE5iw2tZpR/HxXfmeXjwXtRpr6M1?= =?us-ascii?Q?m+oxzhRnjeYIKiKbO7mbXiD0odFl2JIrrRUw0Aen5XibgdiFUcOLwOVy86n4?= =?us-ascii?Q?Iz5XkFALT92rxEfhwZv1Uk3Da28IEJFQhk4GAN/w3ppuETuanvRz0MwOTlpU?= =?us-ascii?Q?pO3W2LFgCTVDbq9lMFXckdoodnqWCFLKznPV+h3X5rvYvQW/Ttg3YLojKGNW?= =?us-ascii?Q?50uO2k4mxKNQRvBFjC0NFZnFXE5iKl8vVUzWxfWpI5gEXcv17EsOHiwsBRYI?= =?us-ascii?Q?vUc7rYjSDxwFUuWVxf6XyhfSzoddIezQu4biBK6uJqedC0Nxv4bAC5jJCpNS?= =?us-ascii?Q?7eMrCkYgvEb+6jGp3VwDyk2RspSPCCYs9prs213JB2ZkosdwteNUtBSPsLdj?= =?us-ascii?Q?eYbaLY0WFvzVnhTy8Gn37tsjuwV/0rl3TK6vdAE1O2tFbdu+5QJ1eIKca6W3?= =?us-ascii?Q?/B/uLmfdUpV1ceu9QeRXyMxfkKfipBKFsfGbBm+rXFDlVq38FOC27MI+ZZYZ?= =?us-ascii?Q?FQUJvs65IeFUVgOv6Mz/kzNPlfKWbpxNPZQ5wJ/sjI1UQBHzNtOidBgJIG50?= =?us-ascii?Q?JIIB6yWyJ4ulo5Viig8xaqocspbJwEXtdLxvGxrFhEv+VW46FnX9c7LzBPW/?= =?us-ascii?Q?rIMqoofn99dPNVwlYec0F4ovBA+HuF2uZfOjipWL1gIUfUynS6YJq780b+qs?= =?us-ascii?Q?of00u0YjNETZ8xDd34Dc8ftx1IkxmwuBQSiB4sWzZylLmD7iTy7hnhefnlvo?= =?us-ascii?Q?ubgkkHA6ybIA2NilaLbWo5pniYPQod04o8HoBQ9nUPDRGRZQ15c4qTxyYrFH?= =?us-ascii?Q?fWUKpxP4gYUpwzQMqwLHp0HLFv3S/+f9y66PVyd5k1htvczrltrAQTPjitcD?= =?us-ascii?Q?MQCanQiLCGsz7HL0Aeu+utvpxycZV6m/aZ+iDp6Wsj9HGw8aBQGS7K/WMtTG?= =?us-ascii?Q?1j01Wh0lpRdb0xB5M0B43FBgONssOW6Zzw3t6snOCoPV6mhy0rVQNVjSbK6G?= =?us-ascii?Q?kcjkNNhufFaWKyPcpUjjO6y0uVLAIpqoxSVdcGBIQtnSMghGt7y6LtmLsaQX?= =?us-ascii?Q?hQvf2OEo06nGYdq5Oyoi7a3DgHbvM1+rwlQIlnuE?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 1d914cc7-d7da-4e75-82ca-08dc2c9c264b X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Feb 2024 14:00:34.9950 (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: 7O75rToO3cm1LWppXxGDQOCmvHf6XVjIPKQmExc/vJzer+7Tq38T/HGAy9FANcbH X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV3PR12MB9186 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240213_060107_094366_A3A9913E X-CRM114-Status: UNSURE ( 8.86 ) 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, Feb 13, 2024 at 01:56:28PM +0000, Will Deacon wrote: > I can write it as a full patch if you prefer (and I'll need your help to > test it), but I was really hoping to continue the discussion so you could > spin a v2. No worries, I'll take care of it, just need to understand what we have agreed. Jason _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel