From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from CWXP265CU010.outbound.protection.outlook.com (mail-ukwestazon11022095.outbound.protection.outlook.com [52.101.101.95]) (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 1BF883655EC; Sat, 26 Sep 2026 20:59:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.101.95 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790456359; cv=fail; b=KJ1lO5BOnYs8lMRQmMl+7Cs5unftI5NFrNEAU+vgTzF6/SI6nlHHjsW7UsNEhcdHEWQErwFSbkEy/0XZTWDMcEKAg1YtC5nNXfxtCpIGRA5Xfd/N8U1uavWQ0/By2sGJ8TYFwNzu58ZtqDEGoW2zZPiJj0umYzK9dw0QMaH6MhA= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790456359; c=relaxed/simple; bh=7NRrKHCVcB0YKO2Mwh9YSnghVeN8e8H9cmLb2FWr+yk=; h=Content-Type:Date:Message-Id:From:To:Cc:Subject:References: In-Reply-To:MIME-Version; b=qE99hfIxEbS19xnx/+hEW7Hs+EviuqqEmlUHDmDLEcxUYt/KFWQOvfhbFR+ehwFyHsMdv4DUa0zuNOlDkCS6IFU0mqBaAJf5ja+7lfKi4iRis/6oo6xEXczWLmsrvJgIgoamKfKVUfDbdljqd715pG49K6i1HmfMELl/WxM13YY= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=garyguo.net; spf=pass smtp.mailfrom=garyguo.net; dkim=pass (1024-bit key) header.d=garyguo.net header.i=@garyguo.net header.b=JFnX+4uG; arc=fail smtp.client-ip=52.101.101.95 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=garyguo.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=garyguo.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=garyguo.net header.i=@garyguo.net header.b="JFnX+4uG" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=i+zJTf6DLMTcqTDNR1OqCyhFSOVUKENUKkOcQ+0LBrq7HDSULZwrnCznNJ7K28vt6973w9SUDiI5ex8lquBluU/rjspX2qoM4Za0TvLB0vTgtSInm6EFtWHtYDEi5U4pNo3VgocwEe8s2xCkYteTHbungg+c/iP3rGuYDEW6igHgaJD7lgsvPgoW92KanYXaO6WKbOVZpJo62aCku/wzLEE9ybpMkolbMb2EpH7va1RvfPsMTZU+tdS/D55EoIa591bmf1r1UFHmL1+jxUTiuaRsqsOL8NAfGg0gEufNcygv/cM8Xrkdq28WRrG7sLIK2mf+JfbIDZLWfrMcvEptBg== 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=kr4++w1uAHwd0Le0YbXbhQ0HkzO8jaQLFkYjO/7fQzE=; b=yTZg/t+5l/vqVcfGdkHDa+ghV00JMUKOf/Fj5DOcCGjVxAePNopBddOWHjSys1yHYVlNRQ4OM/9+KSWsZAIKtOwBshPCdcQ0JgEfRib3ECZxHZtYYfzJvbREO8nvBcW8EhcTr4ab+58JFpWOxoKg/ibQB5PWq50zIvMdftpTAso2F4BP1YBizsAMEqWi/xijSalFRcPVlKJLk79mBz9GCqrlouphQCiJtmrZr+pCpYnqbu27sBm2TlHSEInJZShXQXQO2TH5ByrErz5sAYCbC9wtTsqvivPH6GTM5xgZGIFE1m8Z9eJz7zGhS2vaMnM1Z6fq4+ql4+lIf/A2XMCh9Q== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=garyguo.net; dmarc=pass action=none header.from=garyguo.net; dkim=pass header.d=garyguo.net; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=garyguo.net; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=kr4++w1uAHwd0Le0YbXbhQ0HkzO8jaQLFkYjO/7fQzE=; b=JFnX+4uG1aL8IVgrJZhil2F8UjfS6TMh23eGj+wiZ+Hd/0dM+hPd/UfLm580N5H0rZdMYdW3TNynuIZCIsGEqy2rCTjCP43+unK/bhmVUOyrews7Z9h5tfNQsqY47zAaSC9mOIyXb+XFhoCHk+PSoxWguKOSwZkufUF4BCsts0M= Authentication-Results: mx.microsoft.com 1; dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=garyguo.net; Received: from LOAP265MB8560.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:4ab::19) by LO4P265MB6965.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:34e::9) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.451.19; Sat, 26 Sep 2026 20:59:13 +0000 Received: from LOAP265MB8560.GBRP265.PROD.OUTLOOK.COM ([fe80::f60b:1537:68d7:4fc1]) by LOAP265MB8560.GBRP265.PROD.OUTLOOK.COM ([fe80::f60b:1537:68d7:4fc1%6]) with mapi id 15.21.0451.014; Sat, 26 Sep 2026 20:59:13 +0000 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Sat, 26 Sep 2026 21:59:13 +0100 Message-Id: From: "Gary Guo" To: "Danilo Krummrich" , "Gary Guo" Cc: "Deborah Brouwer" , "Alice Ryhl" , "Daniel Almeida" , "David Airlie" , "Simona Vetter" , "Miguel Ojeda" , "Boqun Feng" , =?utf-8?q?Bj=C3=B6rn_Roy_Baron?= , "Benno Lossin" , "Andreas Hindborg" , "Trevor Gross" , "Tamir Duberstein" , "Alexandre Courbot" , =?utf-8?q?Onur_=C3=96zkan?= , , , Subject: Re: [PATCH v3 1/2] rust: uapi: add zerocopy/zerocopy_derive X-Mailer: aerc 0.22.0 References: <20260925-b4-gpu_info_intobytes-v3-0-e19bcb71980d@collabora.com> <20260925-b4-gpu_info_intobytes-v3-1-e19bcb71980d@collabora.com> In-Reply-To: X-ClientProxiedBy: LO4P265CA0250.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:350::12) To LOAP265MB8560.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:4ab::19) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LOAP265MB8560:EE_|LO4P265MB6965:EE_ X-MS-Office365-Filtering-Correlation-Id: 29c4f829-a1bd-429b-203f-08df1c110528 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|10070799003|366016|7416014|376014|23010399003|56012099006|4143699003|10067099003|22082099003|18002099003; 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:LOAP265MB8560.GBRP265.PROD.OUTLOOK.COM;PTR:;CAT:NONE;SFS:(13230040)(1800799024)(10070799003)(366016)(7416014)(376014)(23010399003)(56012099006)(4143699003)(10067099003)(22082099003)(18002099003);DIR:OUT;SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?WHhwTHByU0FSa0RxU1RXSlo5WHNUMGhoVVBVOEswaldzQ3V0eGRKSER2dGJM?= =?utf-8?B?UXRzcnR1aUdVVzFLNTNZeDUwK0pqVnlUanU0SWNCZXlDUEc0Y1o3Y0ViSldF?= =?utf-8?B?bGEzT0tVVGxzeVpmV3o0bHZKVThmNzZMdEVVdGwyeXJ5aWFyT0tsWDVoeXhZ?= =?utf-8?B?SnhVZEpyU2FmQjV3bzdDSGpsWmhaR1daSkxKNmdaQVZFek1GKzFHR0daQ1dO?= =?utf-8?B?R3pVSE9RdTdDTEMrZHYyUU5jVWY0bUhJSnozaFd2MWdjZDNtRWhYREh6cktX?= =?utf-8?B?S1RlSFJjdlp0YmM1OFdSOGcxMkY1SGdOVGNxZXBCREtqaWtvU3dKVFV0YmJx?= =?utf-8?B?WU40R1g2Y0RiZ2d4RE4rMlRzS3lHS1ZxTWVDNk1TdWNiMGtCODdubHZsL25U?= =?utf-8?B?TE45VFJqSGtITFoxMVQ5WjNXeFdiUGExa3M5MmVjVkI3cDRTbEU5bGtMT0ZL?= =?utf-8?B?U21RSzk1WTdsNXZYVmFUMkJSQTVHUkZ4dzFxRjNqL3hQVnJIcHIwTHJQMldV?= =?utf-8?B?eHA1a3RBRGZVZ1huU3RQRnVXZXpvR0xEYXI2QStCdmZXU1FHZnF1TDJDMFcz?= =?utf-8?B?bEtYdTZzdUdwWDhwck9VOFBTRytEMHpHTjBQRXRyS1F6eGY0bURNYnlRZzJn?= =?utf-8?B?QVRGNXNiTkVKMzlGVlVwUXMyaGJHS3c3S29INVNuOWhsRjFORVFUM1grb08y?= =?utf-8?B?OC9ERmtkdzF6K2wrSXlHUXg2d0Q2bG4wa1JwQlNkeFh2VnpEd1hOMEp4aTRU?= =?utf-8?B?Mm93NXREOHIxR1BYeFFPZ0lOSkR6Y1p6WkxrTjZwS2VXZS94eVRaNkxUV3B2?= =?utf-8?B?cTd4V2R0TjVsM0dNbDVZTk0wZS9zL3FIa0MyNmtFSnhiRnN6Z3FlRjkwQ01a?= =?utf-8?B?THdkeGRLOGRiTDZ5ZEFMUnNnYVVQSUJWRk9ZMmpzdyt3RVRiMGdoc3dDaENu?= =?utf-8?B?UzFBb3kwcFlPU2Y5Vll1NlAzekx3eC9mZGR1SnBwVnFNWmUrNXJNdjkyK1RN?= =?utf-8?B?WEt2bmlkTDhFYWZ1SkYrb0FJVExMQ05JWktTNHlLeWl6SFZRTU80NzR2aS9Q?= =?utf-8?B?a2s1L0lsOTVqdFc0RzlFM1BCUExmNGNGOE9sU25jM3VTYk9LY0g2d3JYSmxB?= =?utf-8?B?T2dBazVLOThpeHJRVGYwM2xWM0lEL0YxRE8renNGYjlRRW5DaXZrSEFlamZG?= =?utf-8?B?ZHdkNGJPdlp5UTg2Qndna3BMSWFNMDJaaG0yczJ2UTJvRlA4UFF2S2NsM3VI?= =?utf-8?B?K2hJckMyK3dSYlh6QkFCaloycXFaeUdZTFhOWnFLZTNLQXM4bHpxOXRYZlk0?= =?utf-8?B?LzRsUnpMWEtmRmxTbndHdDVUNXZPTm1IWms4RzRNTmVHMFRmMWltYS92dVQ5?= =?utf-8?B?NlRCVjFEM0E4UkYzanA4K0VXSnptZjM3cm9MU1BnRkpsT2lsd1hYL0VaU3RI?= =?utf-8?B?NTJwSGpoVHBYOTh4akZRblpDcUNuT055T0xwRDNkMENUckx4WWhVSHRveDJZ?= =?utf-8?B?MFN4TmgxeXlsdzBpZk0ySTBRblZuTEF3bGxiMmFNblg4VE9uakE5bGxzMDgw?= =?utf-8?B?ckJET0c4Qk5SSzQ4VVBwcDFRdUtGVnVhQ1BjZ2hqbGFRVVV4N2dZTE9RdXFn?= =?utf-8?B?LytTc2Y3d3h3azVkdDQ2M3NvL2dPbFZPVG5SMlF1bkwvbnduNmZ4dXp1NUE2?= =?utf-8?B?TEhlU1loUGNjWmMzSWtUQklIY1M4M2pFbFo1bDlQWW95cUh6VTRlUkxLMXdC?= =?utf-8?B?WWZzZGFqbWFMdGZzbjJyYUlEeEtCekdJUnVuWVNPMU04b0ZsMjkwMUV6Tm9h?= =?utf-8?B?b1RLYURRQlJHaTh4aDZIMlhoZUVlUjJpUnB6T1ZWWGJCZERPWmdpbW1OQmxs?= =?utf-8?B?K3Z1a1J1VGlieERKaEJzWVF5YUZocVNFWGZ3NHluZHFVc1FpQXl0RUJzMDhH?= =?utf-8?B?TWpXWk92REJrVkllY0JIZGlONzUxODFORUdsVlpZT2Y3Rk9LL3pXMzFFWlBY?= =?utf-8?B?OVRRM0k1MjlGVmhTa0R0dHhEWnZTYnVmdVJBL3o4c25mME92NHhpeXJ1Y2JI?= =?utf-8?B?YURYQS9RNmRPZWY1VG9hdHZIWFhhN3VzdjhsQ28xUEZkMklpNnhJWURHSmRt?= =?utf-8?B?T08zSEtEMVlDUytqTHlSeXBINkZCZW5vQkdEWE5QNjlVSG5ISFpXM0dEcUVs?= =?utf-8?B?YjJLRUg0Z1BxWFhvd0tBb0RWdTNUQ0VENmZ4bFY1dE5kRmk3RW5sc0Jrd2Nu?= =?utf-8?B?MmxyN3kxR2l6RHRHVGlGRnNsZ3UyUnFkTk5CNFJFcEJ3R3g1bWpPS2RJNm5K?= =?utf-8?B?OG5hekllSC9HOVJrMDFwejNGVXZVQlowNlRGMUIrRmF0bWZyd2Jxdz09?= X-OriginatorOrg: garyguo.net X-MS-Exchange-CrossTenant-Network-Message-Id: 29c4f829-a1bd-429b-203f-08df1c110528 X-MS-Exchange-CrossTenant-AuthSource: LOAP265MB8560.GBRP265.PROD.OUTLOOK.COM X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 26 Sep 2026 20:59:13.7500 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: bbc898ad-b10f-4e10-8552-d9377b823d45 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: pDvd85ygOgCx3D9j1pO8KJh8jZfvx29AFhsj6skRyecMWBCSdBIp7wh4DWpjxx/u+PVL4uaET4uVvpljA6Zd5w== X-MS-Exchange-Transport-CrossTenantHeadersStamped: LO4P265MB6965 On Sat Sep 26, 2026 at 5:26 PM BST, Danilo Krummrich wrote: > On Sat Sep 26, 2026 at 5:50 PM CEST, Gary Guo wrote: >> On Sat Sep 26, 2026 at 1:26 AM BST, Deborah Brouwer wrote: >>> @@ -71,3 +71,6 @@ >>> # Structs should implement `Zeroable` when all of their fields do. >>> --with-derive-custom-struct .*=3DMaybeZeroable >>> --with-derive-custom-union .*=3DMaybeZeroable >>> + >>> +# `drm_panthor_gpu_info` is copied byte-for-byte to userspace. >>> +--with-derive-custom-struct '^drm_panthor_gpu_info$'=3Dzerocopy_derive= ::most_traits >> >> This is Tyr specific change and should be in patch 2. > > Why list all of them separately? Can't we apply this to all uAPI structs? There are types with paddings which cannot derive `IntoBytes`. Best, Gary