From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from SN4PR2101CU001.outbound.protection.outlook.com (mail-southcentralusazon11012029.outbound.protection.outlook.com [40.93.195.29]) (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 DD7BB40DB5B; Wed, 7 Oct 2026 11:56:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.93.195.29 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791374198; cv=fail; b=DkZeINe3ED9WWGW9G+R6oOO5H3077eHtUJN8u35k38u9uuPtFTAF/UaJXoE27LqLLmn6iwjgOds6hCkdL/BWM044NmTQdYPDsZO0OLvSpo4c1rojneRzahTRJayqW2N9esvCKGxoP1+6nLM1KUXtSg53NsXzXltCnisCuI6uiFE= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791374198; c=relaxed/simple; bh=yR5hanKK7F6uc8XbS8lHCh0UvQ9lTTAmKLJALNwJ1J4=; h=Content-Type:Date:Message-Id:From:To:Cc:Subject:References: In-Reply-To:MIME-Version; b=W+sjf6MxTj2De7J+A6MkWdtpT5CA6N/qC9JTVTAQyh+ZA5dc6cJsYDjb2il0ap9LCf5mpcWrXYWwOeBmVq4iJC74hJ1A83c9JT4w/3Sr0BOVfn0YIAxoW5W9nes9Sg7JUS3bWBYhoel9mx04N/0lQqhKxEl4uuL6/gU4JRiymgI= 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=Pev4xFUX; arc=fail smtp.client-ip=40.93.195.29 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="Pev4xFUX" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=WXlIdblX/nl6liIWXlkVGkcHH0N+l8xEgIHn6JSknbCNeZdw9q+V8e/3VXa7HDE05aQ2FL5pKUZUaGZJh6NObnBtFJ/WCNR4UIOmwUtpZyPq5txcxdl6Nnk4vWHL5qrwjA4ueLEM3/K1dk4vfqGk5OF+iEQXou/tTEJbxKBcSMbT2OLl5zD4GnGlMmt2dA+7IYZpmWT4tH+CCZL37vk+B4Bek5Q3I83emR6CZxJuU6t/AsNHdAzzMgLtzzw8Os1IfvYge79ADQ9gYPFpmjGlqvAoTzzQSMMDtBbI8Vogqluag6c+IIerl2ouJNmEPsj74MG98vAUw50BaoDRK9ilrQ== 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=yR5hanKK7F6uc8XbS8lHCh0UvQ9lTTAmKLJALNwJ1J4=; b=YAv+tbJ71n2Ygm80ixmlP3xMpz8othH7z9MN3Ju3hFs4fhMvuBhr5gT/8RD4zB1RuOXQCS+JeM979vX1DLQ3LoREyJBUvv7U71QFEEJK3i5Oc8ClyXex8wU+HR8BSF2nmVukW8n8/6uhEWjXgGTR8vPRBOs4EJz1MKPUfP5nheh5wCE/TjworpSmqAye9j9AIckTDyKFHkqyb8LGmtid759WRajXmN78qyUoHGMeQeKr+NdTi4pWYNWnuQRRtziE99WMlD9L0k3I32eqdCGHcaxePivss8xSiTEIRea/1vz7+jBol8IOt6Ejfy6aBzWET6KMQuRE242KWFlh0o4Mkg== 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=yR5hanKK7F6uc8XbS8lHCh0UvQ9lTTAmKLJALNwJ1J4=; b=Pev4xFUXL6Pbr4E6VombP1S4Vu4I5VWR77J8X4FzNLoTq2XBczHDD29UyDX7W+WwCxxYxEUm7fXqbEL3Vsy5bvD3LbQXuYfrUaXL/fRByRtYv/LWFDiG7dDiFieWB8FwKsIcS0Gun1AqPRhpSdSNj4m4/1u0ZpypH6V+hp4TvnJw/ogO8T+euo1EOYlNmJa2JdlaMxUDfISkmuG7EThpnKRSDfUwkjsHOZMdJPRns2ay9hT68YA1XqfVX1Y9GBzSvKGO38A/ehSFS85ZXWjjw9ihscH5yIJxXdhC/mojsqCmQ0AP9prcFK6IfbscobtVryhYa9W73sCiAnwY5iGG9g== Authentication-Results: mx.microsoft.com 1; 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 PH9PR12MB995114.namprd12.prod.outlook.com (2603:10b6:510:426::10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.496.16; Wed, 7 Oct 2026 11:56:24 +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 15.21.0472.016; Wed, 7 Oct 2026 11:56:24 +0000 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Wed, 07 Oct 2026 20:56:21 +0900 Message-Id: From: "Alexandre Courbot" To: "John Hubbard" Cc: "Eliot Courtney" , "Danilo Krummrich" , "Lorenzo Stoakes" , "Vlastimil Babka" , "Liam R. Howlett" , "Uladzislau Rezki" , "Miguel Ojeda" , "Boqun Feng" , "Gary Guo" , =?utf-8?q?Bj=C3=B6rn_Roy_Baron?= , "Benno Lossin" , "Andreas Hindborg" , "Alice Ryhl" , "Trevor Gross" , "Daniel Almeida" , "Tamir Duberstein" , =?utf-8?q?Onur_=C3=96zkan?= , "David Airlie" , "Simona Vetter" , "Alistair Popple" , "Timur Tabi" , , , , Subject: Re: [PATCH v3 4/8] gpu: nova-core: add NVKV encoder References: <20260928-b4-nvkv-v3-0-f04504c262c2@nvidia.com> <20260928-b4-nvkv-v3-4-f04504c262c2@nvidia.com> <4ac83051-6ac3-4919-b230-bfa059ff956f@nvidia.com> In-Reply-To: <4ac83051-6ac3-4919-b230-bfa059ff956f@nvidia.com> X-ClientProxiedBy: OS7P286CA0007.JPNP286.PROD.OUTLOOK.COM (2603:1096:604:26c::11) To MW4PR12MB6873.namprd12.prod.outlook.com (2603:10b6:303:20c::17) 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: MW4PR12MB6873:EE_|PH9PR12MB995114:EE_ X-MS-Office365-Filtering-Correlation-Id: a4e5663c-c09c-485c-c543-08df246a02f6 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|10070799003|23010399003|7416014|376014|1800799024|56012099006|11063799006|4143699003|10067099003|18002099003|22082099003; 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)(7416014)(376014)(1800799024)(56012099006)(11063799006)(4143699003)(10067099003)(18002099003)(22082099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 2 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?aXhMWDZtbmpOQW1oRU94YzY0bThKaG1tY3FDZkFSV1NkY1BNL1FoSDhpMkdm?= =?utf-8?B?Z2pZN2d2TTJXdUlFNVJwQktUMWtGSmtkaE0ySjBrL1h3Rkh1Q29HWFJBeDNi?= =?utf-8?B?bHBpMWNwZUxXZ1hKUUluSUxkOU81dHNmcU9hUlhIV1RzQ2ExQWxTRjZ6SzYy?= =?utf-8?B?em1BTHo5QWFGSXBOTHVSSTgrazVuSUtCY0pZNnhmOVhvR01HWWpNakQ2c24z?= =?utf-8?B?YmNPaVBvREJpRHdiMkZFMDExd1hiUmhhMTRXOFVzRDAzVkZKaHJlaStKV2Jn?= =?utf-8?B?My9YcGxIeHdIZ0cxcnk1U2dMdWExeHNPV0N6SFRHVk56b041Vlp0NjByZXNX?= =?utf-8?B?T3V2TTdOTzRpVUtEWWpiZGE5VVN4bzRxUkxoVVFoQ0NpeC9GTUVBc0NmS0Js?= =?utf-8?B?MWhzZnN6RlhoQkhBdnVqYWI3WmI1U3dic0cya08zSmI5TjM3LzN3ZXdLemJz?= =?utf-8?B?cVlOSXRYVTFRVFVwWmd3bzBGVGcvcTlCNUt0cTgwcUVQdXZOSTRudjVBY2dz?= =?utf-8?B?MjlpZFpRVzM1LzBVVEJJOXRLcjRHMjFlWDZxR3VsQ3g0dGVwWnVDd1BMck03?= =?utf-8?B?ZkhZSGNFZE9nNm5CV3dOSlhCMVQ4WVJLSk5EL21sbEdMMSs1SjlRK1ZjcFdk?= =?utf-8?B?Y2NzSllqQ3hXN3F6QXFTNW1NSHAvc2hVR0JZRHIzWmhCYnpLOVpHNnNDWHVN?= =?utf-8?B?cVA1NTJlemFBYllTTGs3MnArN1NxcHBvQVJyaVpsWE5MOU5odUJITXRQd3p6?= =?utf-8?B?aHp5RWNqOXQ3VHZvNzlUQjNyb1RtUXZFQVZXQ2xwYWlUVnVldjA1RkhQelVY?= =?utf-8?B?ZFk4eGp0eGlWVW1ZajJsQm9BaU1xNHcwTEFROEtpelR6T1hVZE1BQnpIMFEr?= =?utf-8?B?RnRYYlR4bHk3NEhCRG9kb0t3RGdlSzBqQmVScEJFTWU0aGFCZlhjRk5CU1dm?= =?utf-8?B?MGx0TkRQS2hOSmJoYnZKdHBscisyRXBBb1pwVURyNEFMMnJneU9SU2ZLVlpI?= =?utf-8?B?bTZwVEhnWVdEVHpQZ3ZwcnBtN2VYSkozMHVOVG9mWlhaNGR4VS9WalVXOVl0?= =?utf-8?B?d1c4SlMxQ25XNm5IbElJaXJFQmV2YUNyNGpSWmNWL1B2TC9wU2RPZEJubmtj?= =?utf-8?B?VE5qTWplSnhJQXhiTWs2RU1kUnA0Slk1bzBJeUV3MjM4RXkwa1IvM055eW5R?= =?utf-8?B?SG9KMXlmMDJBMXU5QW5vNzJqbWw3bGVYMHlaR1hRQjVlMzZXZkxJalhoT01R?= =?utf-8?B?VE9Hc1NrTW5tWEI0SERLN0l5dnoxSWtybnFaUDJxZFk2eWlIb1RQZzZXdDlm?= =?utf-8?B?d3paUlRBTTlTRy9CNmlTczRnY0dBZlk4SU1CRmphRjh6MEtHbjhnalB6b0Fm?= =?utf-8?B?OUNyeDEvTFljbG5oRlp2ZEYzOWJZWUdiT0pHb2RjbFd6RDN0NkpUWTMwWVo4?= =?utf-8?B?V3d2YllJRGg5RmduL2pVdDJ3dXVPSkFmZGgzMGlZNGpkcmlycFdySER5RVg1?= =?utf-8?B?V0VnQzJGS25oY2NUMjREWk1FVTVSRmxEQWpLZHJzTSsrZmlWS0RnSTNlbk5B?= =?utf-8?B?YUgxTVR0MUE5L0ttZWRFNDlmT0RQRzJBMkpKWVNjR0RmdVFVOVhlU1lFS2pC?= =?utf-8?B?cTU4V25VWUl5S25xOW5mN2ZUNU1wdlV5bGN6YkIvWkRnN0xGYlBmWXErbnBl?= =?utf-8?B?S3RZSE4zUWtwZTZhOTVBbUljekd1MjJsRklvTUJGQWVlRlAwdWc3NXpxMFZs?= =?utf-8?B?dkdpMFpLUHB5OCtRcmpjNVlVS1VjYURaRUU4YnR3ZVNUOUtPYXlhSWdLYWNo?= =?utf-8?B?RGFKaG5PRFB0aERCMk1RVis2cUtzWDdLbE02VkNVTDIraU9EZm9pZllzWkJ0?= =?utf-8?B?Vzg2TWNFZ2piQkg4T0UrbDI4VUxMSU9zcW5SenBSWHdDQ01IckVyRXprYjRD?= =?utf-8?B?N1pVRmtWVG9UMlhaTlR2QktMTWFnYlFHc0hUM3hWQ0xBQVhvZ2ZrdTNYM1Bi?= =?utf-8?B?bXdHa2VkMHB4amEwNTRPSzY3VXZKdGJzdUpyeVpQZmJ2RC9JMGhDMWVaVGNJ?= =?utf-8?B?ejA5cDRGa2l6QlF1RVJ2QnNDR2thNlZiR2hId2tFS3BWeDFjWUxpZ0ZESDVN?= =?utf-8?B?VDBzbG5UQ3prdmpDNG1CK3RHQ1hrNjFhM1E4cVpCTm4xRnRtcTJhT3pBS0pL?= =?utf-8?B?aDZpNE5yUjZtUkowS3FjRDNXcy9xc3pGckJ0Qi9aTFJuUU0rTE9KcXFzdTY5?= =?utf-8?B?VlJVMGl2NzNQekZRNkxySWsyNVVDOFpKYUZxenlkVGZjdmV4TzlrYWY4N01Z?= =?utf-8?B?ak1ocEdaTzluNlZvMEpsMFJlbms0MlAwU0tZdE50Y3FnTEM4Tm55MElTOWl1?= =?utf-8?Q?IdaiiS6T6/c3JjUbktiW+TRfamzEiM5N5tIQJjllUp4m6?= X-MS-Exchange-AntiSpam-MessageData-1: 39aquEwI0o+33g== X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: a4e5663c-c09c-485c-c543-08df246a02f6 X-MS-Exchange-CrossTenant-AuthSource: MW4PR12MB6873.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Oct 2026 11:56:24.6135 (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: nHJ0ga4NODxz0VkuD0q7ogbH7K8PNv/nF1bGSDhhlEEVA3Yfv/+x4cRLFpMfS797tli/C4T59xx6Len/Xem98w== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH9PR12MB995114 On Wed Oct 7, 2026 at 8:33 PM JST, John Hubbard wrote: > On 10/7/26 5:48 AM, Alexandre Courbot wrote: >> On Wed Oct 7, 2026 at 12:43 PM JST, Alexandre Courbot wrote: >>> On Mon Sep 28, 2026 at 5:42 PM JST, Eliot Courtney wrote: >>> <...> >>> ... and that's all I could find on this patch. I particularly like how >>> the examples have turned out! >>=20 >> ... although maybe the Sashiko comments are worth considering too. Nova >> does depend on little-endian, but it probably wouldn't cost us much to >> e.g. call `to_le_bytes` instead of `to_ne_bytes` to make the code more >> portable. > > I recall having this conversation before, and I've tried to consistently > say "no". It's not a real thing, and if it ever becomes one it will be > a very big deal, not something we would overlook. I agree on principle when writing endian-neutral code requires some extra infrastructure or considerably more code, but here we are talking about trading a call to `to_ne_bytes` for one to `to_le_bytes`, which is zero effort. ... although the Sashiko warning on `extend_with_padding` *would* require more than just a method call to properly manage arrays of `u32` and `u64`, so maybe we don't need to fix them all, or any at all for that matter since half-fixed code is still broken code.