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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 82C71E9D827 for ; Mon, 6 Apr 2026 00:09:15 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 848B710E1C9; Mon, 6 Apr 2026 00:09:14 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (1024-bit key; unprotected) header.d=garyguo.net header.i=@garyguo.net header.b="i+P2r/qq"; dkim-atps=neutral Received: from CWXP265CU008.outbound.protection.outlook.com (mail-ukwestazon11020097.outbound.protection.outlook.com [52.101.195.97]) by gabe.freedesktop.org (Postfix) with ESMTPS id 791B810E1C9; Mon, 6 Apr 2026 00:09:13 +0000 (UTC) ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=ro7dA3iFxTBK9c3AFkInmNJf9Acv2LTKbqM2cgj9NKeqRH0clwS2GqzO6DtcuUlDqNgjGqnMMzWV26QRC1OULrNrdT9AvpYFdM+KTGNDojFbiDtYd9+pu34W7Gi4AIxVGdnmjDh89EqOGwPOw6H4QB5n/MLlO3aZkV70s2LnBhsgyE/Eou8hueRFp1PwLPyir3MEPfnkL1Eur/hOLamgSescmlMYTugDpeng7MnPDx5uDJ4efgMLC7SBmEUmsxnqWmX1RagFr8qGetbxZdZBV+L9hiB5+kh2OMLTkNMwOT1Wy+/ktV8cqB+Wlp+OHZLgYU+kpoGr/2W5+IpC76ut7w== 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=FRzIu6sBMia7PX1fMw1AGKpctDdUZfL+eftZEQVOsHY=; b=H/yUZ+cTGpZg+VK/ArGk6RKUvR0Ek1z4kqQDIRNL0y3AU68qrQzxF0tqY2xNT4f5Va3LsY1SK6qZJG1yyV7nR51e9lWUTtXotnhUtp82MGHT24SBeaQRL1rDk7TacZwp8G8cpicmZvmxckmpjJ8MM9YIhcGXP1H2E/UO69Mlg0Ok41z25/i4Cf0VeVME6eKFhRYcKXKwaINJ4IcJsR7b0nEqnGg1S5b+BpqoJ6RiFCVss9VT50IWXmfdOInRZ2OQl49SR00/Ogn7sNBygPF2HBMxefSPoZVA3jBGsexVQgENav+wAOcjyzTn6Or3Bff8LUx9+t2wZ9nkDtnG240Ucw== 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=FRzIu6sBMia7PX1fMw1AGKpctDdUZfL+eftZEQVOsHY=; b=i+P2r/qq77hUUK80X08pDIl2STq5KTLp5qCHQwEt9gzjz/euyO8uUUk6XMLNkI3VEGrNvsnWj+6UAyDBVKccOF+yzmmb04DQBvOJ1EkGMg+iTM78ubNEk+X74Ty5/b6VEeT3ougIrwLpHrJFDjvtN8oGFKgoQ6DtHbW5gpZx5KA= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=garyguo.net; Received: from LOVP265MB8871.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:488::16) by LO0P265MB6978.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:2eb::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9769.18; Mon, 6 Apr 2026 00:09:10 +0000 Received: from LOVP265MB8871.GBRP265.PROD.OUTLOOK.COM ([fe80::1c3:ceba:21b4:9986]) by LOVP265MB8871.GBRP265.PROD.OUTLOOK.COM ([fe80::1c3:ceba:21b4:9986%4]) with mapi id 15.20.9769.016; Mon, 6 Apr 2026 00:09:10 +0000 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Mon, 06 Apr 2026 01:09:09 +0100 Message-Id: Cc: "Miguel Ojeda" , "Danilo Krummrich" , "Andreas Hindborg" , "Catalin Marinas" , "Will Deacon" , "Paul Walmsley" , "Palmer Dabbelt" , "Albert Ou" , "Alexandre Courbot" , "David Airlie" , "Simona Vetter" , "Brendan Higgins" , "David Gow" , "Greg Kroah-Hartman" , =?utf-8?q?Arve_Hj=C3=B8nnev=C3=A5g?= , "Todd Kjos" , "Christian Brauner" , "Carlos Llamas" , "Alice Ryhl" , "Jonathan Corbet" , "Boqun Feng" , =?utf-8?q?Bj=C3=B6rn_Roy_Baron?= , "Benno Lossin" , "Trevor Gross" , , , "Lorenzo Stoakes" , "Vlastimil Babka" , "Liam R . Howlett" , "Uladzislau Rezki" , , "moderated for non-subscribers" , "Alexandre Ghiti" , , , , "Rae Moar" , , , "Nick Desaulniers" , "Bill Wendling" , "Justin Stitt" , , , "Shuah Khan" , Subject: Re: [PATCH 32/33] rust: kbuild: support global per-version flags From: "Gary Guo" To: "Miguel Ojeda" , "Gary Guo" , "Nathan Chancellor" , "Nicolas Schier" X-Mailer: aerc 0.21.0 References: <20260401114540.30108-1-ojeda@kernel.org> <20260401114540.30108-33-ojeda@kernel.org> In-Reply-To: X-ClientProxiedBy: LO4P123CA0126.GBRP123.PROD.OUTLOOK.COM (2603:10a6:600:192::23) To LOVP265MB8871.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:488::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: LOVP265MB8871:EE_|LO0P265MB6978:EE_ X-MS-Office365-Filtering-Correlation-Id: ae1ce629-83c5-43a4-e992-08de9370ba85 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|366016|1800799024|376014|10070799003|7416014|22082099003|56012099003|18002099003; X-Microsoft-Antispam-Message-Info: xOp6a83gBRdLE4U6obQUBgYLQ0MsUt22RLTUCkr2T42n986JVcXiVcPU+lF7pKnQHBQwhaFqpxv3hnZOudRy50FvOInCwnSU187m/AQkE798W0yPc03kHqqmbmWmNb4SfCj/IZ8gPbt9D2T3iQuh4xuaW/tNvPNYwJyBlen4HIyhA59xTt2QjiMjVt2NY5cOj0bNcCYhWq0OuBdCXW3ZaBEGWewUf49+HG08va//r8MXpCaZUib0wjBKx/7z/vx7L/nDMn5m354g7ZcC36UPVTdiHT1YS0MDBur+dCj6NgWVQg5MJrwjbUwlBZ1ONfdKibzy4sifUPwP7K9ObGEQB/43aW/cNJUjC64eFZo2Kw9RXG8zaxmceJpCLndhd3lEfgopIhX2amxf3LMPaHKeRTM2hFTyMX8XtWvHPgm0S0XcSLcqGkLLeoZBuh4ElKh0D4hiePgwY+KKJaZhnkaUK4hab2rl++lkEswLobGWkjrpDaXJlYv9C+2bM8ntHIQXm/s+6xrI5+izsBSrJL3HaG4WwoEu9mtEvcQ15GWPT4zMPhcE1cMQLM+lrmCQi2M0RQcD5nzGnvOysJYSxBGrOBs75k3o1oFeliLsM5EGeA4wEUYBko85L8PhUbOFHt1oMxh7g1rJeUgBKUtGESEwFOJP8waAty7hoNQ7F3K7ywBvbmFqxOwaDrPgXJOb+x4tV6GNexuXZxpBICipFZCa5kFo/s3S2w6U+4GnX1B8J18= X-Forefront-Antispam-Report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:LOVP265MB8871.GBRP265.PROD.OUTLOOK.COM; PTR:; CAT:NONE; SFS:(13230040)(366016)(1800799024)(376014)(10070799003)(7416014)(22082099003)(56012099003)(18002099003); DIR:OUT; SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?YlFiT0JhckFOTGZycFYwdjlBeUJHczd5WnhOYkFYM2w2Skx4ZXhJYmlvY01O?= =?utf-8?B?R01NNTZyeC9KWkIwM0xFZXozWUhkM3NxZDJNM2JEcFFlaWFFNU9YbXArN1Fi?= =?utf-8?B?L3lBRTZDSzMrNFdWdHRmWmg1Ri9QazBUSUdKb1U0aDRvRWVwZng1K2lZdWhp?= =?utf-8?B?T3dKQ09BM3dDZ3RHYnVnV3pWbnQwaEFhanRoY2RvR0k0TUllb3QvZUYxYlVZ?= =?utf-8?B?SHUrL05FZVAzR1pUUE5sb0RhOFBkcVBkcG1YYlRNaVZxQkNOTlZ5T1NyZEVw?= =?utf-8?B?RFlRSDhmZm9SSFhmV2JWeUJJdVJ4N0JUbXYvV3ZFeXgzYTVmMHMzZlpaY241?= =?utf-8?B?KzdVcGZidWJMeENzMVdaU3N5d0pUTFVCNHJnK213L0daMFVLZVZqMWJrZkU0?= =?utf-8?B?dkxGUmxhdi9mQ0FDQnRYR1ZQM2pDOUlHVmhscndWdzZYbFFBWXlLMXJrNStC?= =?utf-8?B?b2JPUVBBRXhGdFpjRm1RRnN6OXV2QnhEa1FXSXFOZTVVR2dPWTY5M3ZOWFdB?= =?utf-8?B?d3RLY1VJNHQwYmEyallySHFKb0FDWDgxVkRHVjBaWnB4T0p1V3JoQkRlSjlG?= =?utf-8?B?cnpDL3lNbDF1THpEdUtYR3B0SzN0cnRaQkV5YllkNDZQVDNFQmZNampFOEts?= =?utf-8?B?WVd1YzFWZWFHVmg4Y1hQT0t2Ulp6NWM5SU0wbk8yWm5XbVMwTjZnLzhtdi9i?= =?utf-8?B?dlBWaFIvVmoveWxPdDhnaEp0UE1hVENrU0dSWERaNGp5NDE5UW5QUEtLNVFM?= =?utf-8?B?TldSbGZaYTAvdmF6SlVObjJZRWRLRzl6S09pdFQ4Rlk3ek5oL293L2NDb0NS?= =?utf-8?B?V0prZ0xGUHRkT3prQ2tLS29JVGNzRjJnYW94ZForN3pQWDlJRkNDa2FaRmI4?= =?utf-8?B?VTk2MDBjZ3h3UGk0QmhlbFV4ZlEwNXQ4R2JiRzdFeC9UemZNcGplYXpSS2VC?= =?utf-8?B?SXd5SmZvNVZ3eWJVT0h4VDJDQkpqK3V3L2lyRXFWZm9aMXM0Qm5uRVdzMkRK?= =?utf-8?B?QzJ6OFBYYkQ4OUlpVS94cnpGa0tPQk8xaGlMV0pUWmhzaGV4WHdGclpSSjdi?= =?utf-8?B?WU5OUE5tdDRGZ1N0NGU3WmpFVjRtMFlPSFNNK2xpSFluZmEvUFE3S2FJY0FU?= =?utf-8?B?UDFvdkJsaGUxbGR1TE9FMzlMcTN6TXdmNHNHSHpuMzNoYTlZYWpPL2pvR0VZ?= =?utf-8?B?L1hkZzlIQTlkQitQVHJYOTlhQU0va0FadC90d3gwL1N6YkZIeW0xV1c2dE5a?= =?utf-8?B?bVBzbzc5MUpDU3F2V1dKbDVxY000SzJWS2lHaU1UV0NCMGNpdnNiU0IyeGJj?= =?utf-8?B?enRRa0MyZmNLUlFMNzhhcU5YZUgySi9PenlKQUhLSU9HdXN6ZVJPVWhpZUY4?= =?utf-8?B?LzFQQW9LU29ZbytFV3pQc2FvelhTU21OM1JSN1hrV1VFa1R4YW9ZTDNKY3VQ?= =?utf-8?B?RGtMajA0OFdqckM4VDNjTnBpNmFVaitpL0xadFQ2anBCYWk0Rll3ZjYweVU4?= =?utf-8?B?ckNKdG81dUxtTW5uUndQdy8reVVCYzBacEpacCtBbk1JWmRKMk9NQTJQTm0x?= =?utf-8?B?L3lGSHR6c1RkbDB2S2VSSHpsSGQ5TmlWOHRsZVpxM3NVdWJSVjZ1dnJ0TE51?= =?utf-8?B?RTVNbXUyMDRsZENRU1JpNUQ1VjZnMUpjQzY0dCtEUDN6OFU1djN1TXFka0pt?= =?utf-8?B?elp6TmJiUU5Xa0xlM3hpcko1SHhqa3NVOUdxUnQ2UUgydHU5ekdDTUlodEVm?= =?utf-8?B?alB2c1puTXoxOUFqMlRBRUlGV3F6MklMMXVCZGxzeWw4QVFiOEM3SWhwODdO?= =?utf-8?B?T3J3Z3dDWEMrQ3doVXo0eHRQaXZQQmxpZStFdTZzNGp1ZGpYeVQvU2dhbnFJ?= =?utf-8?B?TmFNMVNhQ3I2aFFEdGRxTjVqM2FIVVQvOElmWEkxdUZlcW9Kd0grc1doYlZu?= =?utf-8?B?MHM3dmo1QS81S2Jydm9QN0pOSmhTazZKU2JkbjRiL2hFR0l5ZHRRbWMwUFVX?= =?utf-8?B?enM3aldKU2RHNjJCTGVFRmZBanVqQnY4QkpjMkdraWlEeE9GY2RvRzBkSVhj?= =?utf-8?B?d04xcHdDYkpCSGdCeWZqRlhTYjNQM2c0QTJTYTNDcW5TR1YvR1pKVUlZZ09P?= =?utf-8?B?WXgzbUkvMTFlNm8rUDE1MnpMTVFKZWlLQXl1YUMxdEZhMVlGSjNYSy82b0Vn?= =?utf-8?B?bkpYbHd1WlpjeDVxamU3ZzNaSDRmRFFZYWMrNnloWGg2eldCd0FpY3FiVGg2?= =?utf-8?B?K00wM1MvbXlXaDN3YlBFWW9yQzR5Wjd0eXhYdVRXbGY4K1BaU2hvNG1WMnFu?= =?utf-8?B?dis1SmRhT2hrSzRXUGg2M0xxT0tYMDhXZ2c5a2lUdGtPT09aMmt5UT09?= X-OriginatorOrg: garyguo.net X-MS-Exchange-CrossTenant-Network-Message-Id: ae1ce629-83c5-43a4-e992-08de9370ba85 X-MS-Exchange-CrossTenant-AuthSource: LOVP265MB8871.GBRP265.PROD.OUTLOOK.COM X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Apr 2026 00:09:10.8936 (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: xibHt/6xHNPmHv7kfNUTOoVm+cKBbIz1wKOlRe8A3s0RzdkujYdTmUU4jOfyBimzRen6gBPBAFqmNMrwr1yp5Q== X-MS-Exchange-Transport-CrossTenantHeadersStamped: LO0P265MB6978 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On Mon Apr 6, 2026 at 12:15 AM BST, Miguel Ojeda wrote: > On Thu, Apr 2, 2026 at 12:28=E2=80=AFAM Gary Guo wrote= : >> >> I think I would prefer moving these down. >> >> The current approach append the flags to all variables, which will cause= the >> following equivalence to stop holding after the flag update. >> >> KBUILD_HOSTRUSTFLAGS :=3D $(rust_common_flags) -O -Cstrip=3Ddebuginfo \ >> -Zallow-features=3D $(HOSTRUSTFLAGS) >> >> (Per version flags doesn't go before -O anymore, it comes after HOSTRUST= FLAGS). > > [ For context for others, Sashiko reported the same and we also talked > about it in a Rust for Linux call. ] > > I have been thinking about this, and about potential other ways to > achieve the same thing. I think the best at the moment is to move just > the `$(HOSTRUSTFLAGS)` below, but not the rest. > > The reason is that it is closer to what we do with other user (kernel) > flags (e.g. arch flags come after the general ones). But I am > wondering if we should/could set all the user variables later in the > `Makefile` in general `HOST*FLAGS` later in the `Makefile`. > > In fact, there is already a limitation with the host flags: `-Werror`, > i.e. that one gets appended later, and so users cannot override it. I cared a bit more about the code clarity (where appending to all variables feel like a hack, while moving the code block is natural). Best, Gary > [...] > > Anyway, for now I moved the expansion of `HOSTRUSTFLAGS` in v2. If > Kbuild (Nathan, Nicolas) think it is a good idea to do one of the > bigger changes (e.g. for more `HOST*` flags, appending it even later), > then we can do it afterwards. > > Cheers, > Miguel