From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from CY7PR03CU001.outbound.protection.outlook.com (mail-westcentralusazon11010009.outbound.protection.outlook.com [40.93.198.9]) (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 6F96A27FD76; Fri, 28 Aug 2026 05:13:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.93.198.9 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787894003; cv=fail; b=D8IdbplapBn9KT+CmnqV25qELelilxJsTIO6S1EZNOdKOc+PNOjcsdkWKvuGW5/Lm84U4JvEHvFKMCUWMoTQE3KqqwlRZcTUVqDsZIe/ON3OqObNeEUMjM8IUKJ/tE8vs0h+L9XsFKoqQoAB0FoK8DcZH3eisNJP/OkyW0mWNxQ= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787894003; c=relaxed/simple; bh=/DMRMoBavp+K0RkBN0nbiOMeVGhPbJCMEvW171Ir5Ik=; h=Content-Type:Date:Message-Id:From:To:Cc:Subject:References: In-Reply-To:MIME-Version; b=RaAJii3PdganiRNvdOR/LiPuXTsAGNbqT1rg83fATOffgNePdLAGphrqnTC5YDt1O0PX04zo9C1ggha7u3npln+EL0s7iUvdvPeH80xcibqFR0zlGtDZBnbNP5HOENVRTNLWDAvkeglZx3fgUkXBPSOdoYlnJ35u/gGc34WqREE= 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=SB4Au6RS; arc=fail smtp.client-ip=40.93.198.9 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="SB4Au6RS" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=H+ME4dHQVwd69O9U4O71hQ7qyYmszwpCG0YgsWERiqLMBL/pkYqeFQlLe/pvT57ehmZZSHO1r5TjlG0qlyG800N6gsBQ3FA/m6t9lqIVq2ySw5Zr/tc2JUJViMxdALTgp4eKl8XbfgmkuDoMOE0c8BWdbW0sbtYrFPhNz4mTRog3Nit1HH4ORZdUAwvv9kGLcDhYChHFvZ7KywcAtNmhFtkjc83ncDqntF7Q8x2w0Cu18ul08l9B/xSTIjb1ICWK9dlcQzGSJobARiJuhJzUwBc/7N0zgyV6G3rzpqXdM0UEKLJR3+M8gbGz62tuMJeWYVnih7QtzW4/WmN+ey5PeQ== 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=/DMRMoBavp+K0RkBN0nbiOMeVGhPbJCMEvW171Ir5Ik=; b=rfSzYC4+TXxA/HkpBRjShNmeHakItZa7kyirM13rAy1qjC2T4lR+8js7ZLL9bhpeTyQFmmxad6XZosZn8AtjHO5opMp623OqsUiOUcqGH+IaIFLsPqQLOA8hki2JentBw1SvhOHNp1EKEJ5n0VNw8XMTzqnK8Nc5cx7s+StZadul45K4ITY3v2WJd36k4Cpu856U3mznkHSbB2s+MmLqtYod5XCCjw5jCfZ/hNwQx7SkepdmsfKBWqJPuYF+4dYUNudUrbBOG04j0Zcl32fiPNqlhqrteQ4sK7xzMlDD/RWUWTqNjnuF2yJUTiVo+ym7syR0YdeUTYgZnxFCs3NMYQ== 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=/DMRMoBavp+K0RkBN0nbiOMeVGhPbJCMEvW171Ir5Ik=; b=SB4Au6RSEmv8p7UVtTtud6Xlmrm9yrlpxr1XJ+TWFEmYUtz1AjLu8Iy42oTE5l1OPxN6gy0C2qFaYPg6jVFtBdvnqcTlBvaXEGlAEoTKZbiaXcggwXWuZidJdO7UUB47kcPEBdSi0ousKZ3vOhvfVcBuqfxkv60blfPlfJVZVQYGoCEwHoA/GyNtKXI012BkBlMWBqrybMXsP+6qqdvQSkjYQe10Tbte7s3gCiuDK/cddbPlFMDLwP+7HqtOeRtk5YuPf/Hrcj946k2TYj63aBdXoUdGMjNX2MDqyrJoKTzpOe+XLcuj3m6EsVBAqJD8NVwS4BDwlkStl/l4YiCm0A== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nvidia.com; Received: from MW4PR12MB6873.namprd12.prod.outlook.com (2603:10b6:303:20c::17) by MW4PR12MB7013.namprd12.prod.outlook.com (2603:10b6:303:218::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.360.10; Fri, 28 Aug 2026 05:13:16 +0000 Received: from MW4PR12MB6873.namprd12.prod.outlook.com ([fe80::a338:bd2c:3a38:ece1]) by MW4PR12MB6873.namprd12.prod.outlook.com ([fe80::a338:bd2c:3a38:ece1%5]) with mapi id 15.21.0315.014; Fri, 28 Aug 2026 05:13:16 +0000 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Fri, 28 Aug 2026 14:13:14 +0900 Message-Id: From: "Alexandre Courbot" To: "Eliot Courtney" Cc: "Alice Ryhl" , "Burak Emir" , "Yury Norov" , "Miguel Ojeda" , "Boqun Feng" , "Gary Guo" , =?utf-8?q?Bj=C3=B6rn_Roy_Baron?= , "Benno Lossin" , "Andreas Hindborg" , "Trevor Gross" , "Danilo Krummrich" , "Daniel Almeida" , "Tamir Duberstein" , =?utf-8?q?Onur_=C3=96zkan?= , "David Airlie" , "Simona Vetter" , "Greg Kroah-Hartman" , "John Hubbard" , "Alistair Popple" , "Timur Tabi" , "Zhi Wang" , , , , Subject: Re: [PATCH v8 07/12] rust: sizes: implement SizeConstants for Alignment References: <20260827-chid-v8-0-bc74c77d0214@nvidia.com> <20260827-chid-v8-7-bc74c77d0214@nvidia.com> In-Reply-To: <20260827-chid-v8-7-bc74c77d0214@nvidia.com> X-ClientProxiedBy: TYCP286CA0366.JPNP286.PROD.OUTLOOK.COM (2603:1096:405:79::6) To MW4PR12MB6873.namprd12.prod.outlook.com (2603:10b6:303:20c::17) Precedence: bulk X-Mailing-List: rust-for-linux@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: MW4PR12MB6873:EE_|MW4PR12MB7013:EE_ X-MS-Office365-Filtering-Correlation-Id: cf19bb2d-6353-493d-bac4-08df04c3116d X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|10070799003|23010399003|1800799024|376014|7416014|10067099003|22082099003|18002099003|11063799006|4143699003|56012099006; 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:MW4PR12MB6873.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(366016)(10070799003)(23010399003)(1800799024)(376014)(7416014)(10067099003)(22082099003)(18002099003)(11063799006)(4143699003)(56012099006);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 2 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?UzNBeDh6bTVsYjJld1hvSkM0MEV0akZVazJzTU82U08yMGxMaFFLWWN1WnVI?= =?utf-8?B?VVk4YWR4eFJZcDZZaGFxdVRIVktndGR0YVg5THJqRFhYNUdUMmQ5S2ovSkZk?= =?utf-8?B?WFA2elV4SjhEcVd0bWlyMDJzTXI5bjdZclExNXN4emtPTnpGQmJLWHFZdW10?= =?utf-8?B?Y0UyWnBmeFVIUjJBdjhOZCt4OXREVEtRZlowNWxwcmxhRitrT2RlOWx5N1R1?= =?utf-8?B?d3RiejIrM21DVGUxcXk5cE1iUkxtV1FKRWVFRG5SNDc0eisxV25lVnNkOGdM?= =?utf-8?B?Vis3YlVRY2ZUQ0lxRTQ3RUp3ME1Zc3pYeVR1dHlMVkhORUdSZENJVGhZZW1q?= =?utf-8?B?eDNIMFdQajUzcmlvOVlaSW5kYlFaN3p0ZkYrWGZ0ZW9yMVo5dzRJcHdHSVVp?= =?utf-8?B?SkRoTFlOREJ1V2FOaGJnMWtZWTJhQzNReTJmWVc3MGJqYnd4d2gyRFhHamV4?= =?utf-8?B?Q0JaRHViQ0hwcGUxdDAxd1pkcGMyY3BkNFJpUDdMUy9na0ltMkNvQThuZFlX?= =?utf-8?B?WldjY1pOc2xlck5LSC9Xdlh5VkM4blB3M3ZmcXdLV0FKaTdmQjJvTnRXVFFJ?= =?utf-8?B?K2dwVVlXUHdPRFpKMmQ5OWZwblhuUkZhOXErSnQ3U2w2ZkpkRmd1c2pnZ3l2?= =?utf-8?B?OTJjSTdNczYycWxUWENMNDZwUTFJK1dQbTljNG0zbXRsZ2IyNSt3d0ltVVFH?= =?utf-8?B?V0c3amlFUDJwSGhIdkZZWXdxSmt0cEkyUSs4RlJSQnVIT0cxSndwVHFzR3ly?= =?utf-8?B?OFlxeWNSNk9pKzVsWHBQMXVEWi8xekkxalpsakVxeDd4ZVJGZW94Z01aWERD?= =?utf-8?B?Vk1rM2d2YndkUUIxOEpJQzczcU4zK1daM25QcEhvR3o3Wmd6ZjMrUFNlUXNL?= =?utf-8?B?UEVHZHhwLzZHWjZhV0s5ZTJOdXE5Rk1MaEJXUjkrUm1hRTI2Nm8vR2ZOWUNz?= =?utf-8?B?bng2ODEzeWJhL3FYeXZFWEZUS01scEVsSmZjTWxFR0s5Z2dGaEJIczkrSlIx?= =?utf-8?B?MndqUUFnL0xYUDAzU1VIUnBYd01CMzFtNlhGTm93VHZZOHh2NzQ5dER6am5p?= =?utf-8?B?KzE2STl0WHRzREdRT2h4dWNJQVlQQ1pXdFp4M2kzaDFUendKTjRzZGtkU1Qz?= =?utf-8?B?TC9BYktRL3MyeG04STZEZzl0cVVsRWIvK0xjZm1SZnBxL3hjT0FRY25oaFNH?= =?utf-8?B?QVpLb3pkK1h3VWJmLzFqQUhTa3lodVBsM3pwbnZuOWFtdFVMOVc5TnY5VkU3?= =?utf-8?B?bS96NmFZYUszUXFYOTNLYkUvN3lSOEhkTktyYU1KTlI2OFYxNXV3dkZMWWlP?= =?utf-8?B?N29HVlRsUGRGOUpGRWNHVjlXTzN1cUkxMmp5VmFwSWdrOTVaSnNuRmtBbmts?= =?utf-8?B?VUZMQy9PaFdQRHBMdldVYUViR0YzT3duWHFNSHpTRFczczZ5YzBVYnBsbFA5?= =?utf-8?B?eUY5Qkp2ODJXZUYyS25OZjk0TmFmbEYzNzl6RzhQM2pHSTdXWXhpL1M3c0pn?= =?utf-8?B?Vld1dFBQT2xVZmkrb3lBRmZXUnJPaFJvUkJuZDdhTUN2VVlQN3NwOTJWWnQ0?= =?utf-8?B?VGdhWmk1UU5VTm0vSmFnRHc0OU4vWWtFSUNxb0JkMUJPMEF2ZGorMFd1MGZV?= =?utf-8?B?cEdvT2ZLMFUwSXpvUlI1ZkdCR2x5UjdFblBrTlhMSERtNWN5QnNQZWp1TmZR?= =?utf-8?B?dkFsS2JBWjhMdzJyamtqQTU5Zk9ZcFVYb2RXZmp0c2p5cDMzaWhKRkVwRmI4?= =?utf-8?B?ZERHZzh5eTRFK2pyS3NneHduZHdtS0dTMUxyaVNrcjRXTXBtYURsNlhhendM?= =?utf-8?B?ZC9MMTRuMTVWdU5ITmhpZ2ozcE1KS3N4T2hOaXo0VVRuVjJrWlI3VWp1UWtE?= =?utf-8?B?Q0k4bkJDTUJjWXRWdllXUm1CR3doeEpjcjl0TlcyMmxUOWNaVktIVFJtWVox?= =?utf-8?B?MjNVbEMyVGJEU3BqcXdiY09KdzNsQ2VmcFowblFIeVpDdWVoTDV0RkVuVmRx?= =?utf-8?B?NU1TLzV6MHZZdzBHZ3FycFU4RmxBQzlTdm9PRzZpWXROdVdjV0wrWVJxNzBR?= =?utf-8?B?UHRQdVdGQnV6amY5SjNaT2VleU1sWWJqcDNITEVlcG0xc21vZEtxMnRwSDRB?= =?utf-8?B?aXk2Z2V4d3FxSkdtbUo5Y0VGV3JzUzRvU1pIWkVjbFVVYkZzczRNelEzZlkz?= =?utf-8?B?M3ZaT1FsUHFHT1RqWFlTdUtwUnFDNUtFODlEQWNqL3FxVHJHbEhUSnhqaElC?= =?utf-8?B?NXdHeEFhVlNEUktQWEpxcHFSaDRmVUp6NU1iaTFtYnpRRzlZT2lyUzJ0OVls?= =?utf-8?B?TGZkOW8vaVduTVJvd25LL09jckRjVDIrWGp4bnliRkM0cXMxSm9iUUxCOU1N?= =?utf-8?Q?1jjacvC4dUq2JVI3RdOCGoRjIa6PB4fXfdwoBqFHDxeHQ?= X-MS-Exchange-AntiSpam-MessageData-1: vZj56IfMPIUemA== X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: cf19bb2d-6353-493d-bac4-08df04c3116d X-MS-Exchange-CrossTenant-AuthSource: MW4PR12MB6873.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Aug 2026 05:13:16.8424 (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: cfJ18grIZVEgyLRY0JwhaWzKzIEjabYEw4k3BU8mMs68EvGfOPx9qni0K+WOW2Dy9jootTCMb7w5BJ5oleWbbg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW4PR12MB7013 On Thu Aug 27, 2026 at 4:28 PM JST, Eliot Courtney wrote: > Currently, constructing an alignment is quite verbose: > > `Alignment::new::<8>()` > > It's unfortunate because it disincentivizes using it at interface > boundaries. Implement `SizeConstants` for `Alignment` so we can write > e.g. `Alignment::SZ_8` instead. > > Link: https://lore.kernel.org/an4xDp29VX8Am0uR@yury What's the context for the link? Is this a `Suggested-by`? > Signed-off-by: Eliot Courtney Reviewed-by: Alexandre Courbot