From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from SN4PR0501CU005.outbound.protection.outlook.com (mail-southcentralusazon11011012.outbound.protection.outlook.com [40.93.194.12]) (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 A38FE273D77 for ; Thu, 23 Jul 2026 05:30:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.93.194.12 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784784660; cv=fail; b=Try39NdodM1IXbVz7CJ5TZmb+jsVGQ2vHQ6JR+otx/xzP0aUeVner4jNA/RRZZktFso02Cj9IINAZYaJrtXpNDaY5uDXgJnXeLVs5MV4IoL/aqgnaqM2Q8NkPqKlUkoLk56VkwYMdmStqRyF5IFULmKjffmUQlZyIejx5cicK2o= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784784660; c=relaxed/simple; bh=T3OhuRfcO/1ed6SGbV8cT6k2mNftx8ECeveD5oxipxU=; h=Content-Type:Date:Message-Id:Cc:Subject:From:To:References: In-Reply-To:MIME-Version; b=cxY8evdnJtokpkBguT70GfV9RvwHf+Su8XzbgzZ+cLMYsaF3025fG++MHOruREC+Y12O2LtzqS+3qw4sZgzf2L9d+g3k51jGWrL/hxrwN8Zee4uDEyxVAUDgxMeciZwJ9hc8+nbZ75Y0Q7nHzSpEiqihAiTW0kWEsZUsdlyERok= 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=W9ouD5T/; arc=fail smtp.client-ip=40.93.194.12 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="W9ouD5T/" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=q9mltp0wFDTchv209iZfuQ9LI75C7uQ7j0/bbKZ6xrHp3NNMXwTNY2f7TnWO5mWPhArPAfZzmWSGLX6S/W30v62xZY58X4lItmG5pBd52yxQX+KZi4iG48LfaLMnVw2MizfkGOcZKgJl5i7Oi6QgE4l3VLhLrDgl+8dcJ82HaFrM4cWi4q18/5KVMcXSsxkwibkYJqRjh7WXle9cUEpKLbe55hLOPJbguZNAH8cso9WauIYnjhFDIPTlHou7GQk+4rqNaWTbC90uCU++krkYJxF2EaHMmcbaTmyr6OZIc30xOk9f9g98vpYCZIFjN/ZjHE54zdHI04uXkSkldgtzHg== 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=T3OhuRfcO/1ed6SGbV8cT6k2mNftx8ECeveD5oxipxU=; b=OiRF1ZeEd7RF00D8l0obD5KgkM5O2ssfBou0QD5TYi9iLVeTeaj+yPM1+oa6DhxbMKyK7kEBYkNLoBCielMAXlCofAzKX8JdOGKf/XLql02lcu/HcdSjypupx/jo/qQiSBVeknl0ornAGCKivJtqu5Jgzy2airgXhUYN2VKeHhJtzVX28J3un2f1zNlBoorT/DB/mwObsvqdkaiAtYt6BeZOE/B7Iuv6leCjjm0xRDW0zjMJSkzQr0IGYRclTK4B0CG457nJMz67Cg5HOtRKAHgh55DLGS4ZuB1nPmIohdNTBqyIIyHYqsI1vypi6F15KA+sYT66ot+e0Lgi+WKk9Q== 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=T3OhuRfcO/1ed6SGbV8cT6k2mNftx8ECeveD5oxipxU=; b=W9ouD5T/ytK3Ch83QxmfpyaxwvUMJ0hut+Ldkl/G2+18ZvCEnZv/veU0MDAYj2ooN09x1ffm9FbqP4CpXqZiIocT1RDvLMMhXyDuCLe5e/7pefTOeF5oHEWVEOzGEh6rdY6Iuu9P3s8s2nis6LQJz+4FadGzKqw3GZA4OtncbtIqnZzyDW6ijZu2mMCD+VDtsf+cvhEiYsIn5SQ49qv2mcrNubXEtll3ENtZ7klSXpRzMpsFRlQ57ILaCSp8ECzINfcX5eiyYS5H0LK9dtMec/z2f6A9ot8nslbIl+5Jsfz2COEL5omlU8YdZgJlaeVY1PE6yEg37Wdcr5rLa4qV5Q== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nvidia.com; Received: from CH2PR12MB3990.namprd12.prod.outlook.com (2603:10b6:610:28::18) by CY5PR12MB6225.namprd12.prod.outlook.com (2603:10b6:930:23::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.245.10; Thu, 23 Jul 2026 05:30:53 +0000 Received: from CH2PR12MB3990.namprd12.prod.outlook.com ([fe80::7de1:4fe5:8ead:5989]) by CH2PR12MB3990.namprd12.prod.outlook.com ([fe80::7de1:4fe5:8ead:5989%4]) with mapi id 15.21.0245.009; Thu, 23 Jul 2026 05:30:52 +0000 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Thu, 23 Jul 2026 14:30:48 +0900 Message-Id: Cc: , , , , , , , , , , , , , , , , , , , , , , , , , , "Bjorn Helgaas" , "David Laight" , Subject: Re: [PATCH v5 2/6] rust: pci: add sriov_get_totalvfs() helper From: "Alexandre Courbot" To: "Danilo Krummrich" , "Zhi Wang" References: <20260722073913.1807677-1-zhiw@nvidia.com> <20260722073913.1807677-3-zhiw@nvidia.com> In-Reply-To: <20260722073913.1807677-3-zhiw@nvidia.com> X-ClientProxiedBy: TYCP301CA0026.JPNP301.PROD.OUTLOOK.COM (2603:1096:400:381::10) To CH2PR12MB3990.namprd12.prod.outlook.com (2603:10b6:610:28::18) Precedence: bulk X-Mailing-List: nova-gpu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH2PR12MB3990:EE_|CY5PR12MB6225:EE_ X-MS-Office365-Filtering-Correlation-Id: 71b2895c-52d2-4efe-6623-08dee87b8fb8 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|23010399003|376014|7416014|1800799024|10070799003|366016|6133799003|11063799006|10067099003|56012099006|4143699003|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:CH2PR12MB3990.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(23010399003)(376014)(7416014)(1800799024)(10070799003)(366016)(6133799003)(11063799006)(10067099003)(56012099006)(4143699003)(18002099003)(22082099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 2 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?YllxYktmYmsrQXd6RjBqdGVmTW9HcHFqbjRjbk5NMkdyWGd2U2JwTGV1VkN2?= =?utf-8?B?TVZqV2lyVEJidWtHTXVBc01CM3B3UlJySk8rMlZMb2YvRWdiV2R6TWtKVDl4?= =?utf-8?B?Y3VNNzBLd21ZeFFtVFBoVHdVcmcycGJkL1o3SU5iSmIxYkw3V3VwOHhJOUdX?= =?utf-8?B?eXNFSlpHQzlzcG1OMm5FUTdXSzJsQjVGbjBvVk1nQ2xkSXRrVTF1dEpyNHRX?= =?utf-8?B?T1ZxQStwVGpZUkQxT3d4ZXNjWkt6NVpmNUcvcURRU3JIVVVoTFJOTm5GV2Rl?= =?utf-8?B?U1p2OXBLR3c1Mzg2VVlXYm5lRkduUGYxRkhsTzU2S05kU0w5S2xLRTZ2akYv?= =?utf-8?B?VWZEWlBhelAzSkhHM2lPZzhCcWp0NGlvUEthTmNvRURQZ3l4TTBpK2hkK0U1?= =?utf-8?B?OThMbnBFZlF6ZDQrSSt3NDJBSGQ4eXdVMjNOVFVma21JQ29BRjFVaFlBTmhW?= =?utf-8?B?YTkrQm55SnhTZzZLRVYvbjlteWhUSG96TWx0L3FLaDlSbzM2UkJDWGVmVkFS?= =?utf-8?B?VGczdW5YV0IrenNSMEFtMTVVWWQxQ05nSWZIamNWNU1MYTlXUlB5S2ZBM2dE?= =?utf-8?B?VGFoNFZNWXhVVG4rb01hQWxzeTZzckhRbWFFbVY2Vmg2eVg3RGFHR3BtOGJM?= =?utf-8?B?dWJJZjc5L2thWjVacFA1UHZOazgxdlBvTzZOSGNpajhNY0lFQ3A0YlRTanlX?= =?utf-8?B?QXJWNWE2YllvUG10M0Yxd0hZNXd5OVByVVVsNG5QZlpBa0JuUWk4blNaSkhW?= =?utf-8?B?cnc4VEhPVFM0QStUZzBBRkptUmdwUXBlMkVnbnZSZityTk5HWjhDdmt5VEtj?= =?utf-8?B?eE12dWg5elFabTlSN2MrNm41cElMeG5lakhjSCs1Ukw0Z0tlT0ZXL3pkSXMw?= =?utf-8?B?NnZtMytLU3ljL2U0NkNsaDNOZ29Bc3V1ZlJLdGRIMG5nc0JWb0ppS0xlUDh5?= =?utf-8?B?QmcyeERVanBPUDgxR1lpWTRJYzgwR0l6K2UwY0ZzQnJZY3FtVjF3aFJQQTVZ?= =?utf-8?B?WUEvQkdRa3dMSGlpWVBTdld4S2VUNi8wZ1l5eWxuQ2hIV2JITGlONzAwUEVB?= =?utf-8?B?VVBNRmVROUR4dWlxM2RJbFJPRi9NeHJueGxxcUFGbS9jNWFnTWs5TXlweHRa?= =?utf-8?B?OWxjbU95clpSWEU1alRhUGFvMitOYWhDUkJwOXVwbmlNbkJZRE9rYmhWOExo?= =?utf-8?B?ZnhReDdUNE1PckRZUXNrTTh2ZUxieW52Rnp3ak1oa2ozem44c1pUSG9hYTg2?= =?utf-8?B?ZHl2RkxOTmhrcWJPb3cyaUluNlFxTExBWXlWY0dvZU1YQWJpZk04d3Q1dDRn?= =?utf-8?B?LzFjc3QxV3h3S0NZVGltM2xBSHNpMWxyODRyaWNUZnJoVVhtRjcyWG05dGc2?= =?utf-8?B?RTM1bWtjN3JXM2FCT3d5K2grQmI4SzBnVE1YZlF2aUFyQndHSlduRStRY29G?= =?utf-8?B?Wk8zTzFqSFQvdWN2dnZISWRnK0xxMjkvSFdEYXBkKzZYSCtJZUVTcjJxOEVK?= =?utf-8?B?bUh0R1M0NllhcXo4bjcwSVA0aW54cVhiY3EyYjRyeEFSK21VYkpPT0RvYWxW?= =?utf-8?B?UEtJM3JHRkdOd0VPWi8wMmF1Y3QraW55V3VURDNqNEo3RDNudHUrako5eDA0?= =?utf-8?B?YkNDVWhuMndtZDhGdlBrK3NZa2grdmg5Uit4Wm5jNWxTL1pmM3Y3UlpKaWw5?= =?utf-8?B?SjFnT0JLK3lwZEhlalFubkl0c0xNbUhqUy9PUENaR1g0em1pclNOY0UvdFFJ?= =?utf-8?B?YWExVTlFd1RvNHdQMkNaWE5vS0NkNjBKQkVsbElObnpuR2k3MmtHbndRWWxh?= =?utf-8?B?NVhJOFNkbXpVQ21CdC9rZ1hOWmU0TUVFckNWR0Q3QXlrMXIxa2crbk5sMFoy?= =?utf-8?B?SHg2SVVKQkhFNktkeTZEUXBhbUZHQ1FVcHdGaVZLSlpmeUMrR29sejdUc2sy?= =?utf-8?B?RzNvaUVMYjFENWpnS1N1R0szWnhsN21BdXRGbVMrZ21hY1RiTGNjcENCNmlT?= =?utf-8?B?Y3M3alM0NFdqblorT3N5cTdsUDdQUXRBNExyYlU4Vk5nUFp3RFhCZDEyQkxM?= =?utf-8?B?VldrOXVoNUFFMysyd3FqV0s5eWQzWnNNMzc3OGhzMWR5TzVzL2hSQ2hoMnRi?= =?utf-8?B?NHRKblQ5dlZOSGppdjZVNG1RL0J0bzRrZUNSSTJYUlNqdXVtNm8wVlVrUE5a?= =?utf-8?B?K0huUlpJekVZOFBuR3lnbnBPSGdvMEhISysrODBtbjdRVTIveDRjYXFvQXlK?= =?utf-8?B?ZWFxbDg2MnpkL3Q3SmZNdytlSFYyT0g5aW9vL2R0bGdGV2s5Q1YySHNuUzZU?= =?utf-8?B?cGFoTmZweWN6aGNBSG1OZWNoamlkOEZzMS9TOTlxOWlUSVE2ZVhuTTJVZVJD?= =?utf-8?Q?VoLbNqwvYx214DTbLAYOpxUvYAmCyAXKNbJLkqKl5Vgpe?= X-MS-Exchange-AntiSpam-MessageData-1: WS8sxcop6k5+1w== X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 71b2895c-52d2-4efe-6623-08dee87b8fb8 X-MS-Exchange-CrossTenant-AuthSource: CH2PR12MB3990.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Jul 2026 05:30:52.6399 (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: NLHaqG7cU3FY3Frmrfpk8BR1mIhXsKgpRF0bWD2Z2/twUXW2jav4nzUjLf7kS9uS2yaUkoSauK2jYwn5eW0cgw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY5PR12MB6225 On Wed Jul 22, 2026 at 4:39 PM JST, Zhi Wang wrote: > Expose pci_sriov_get_totalvfs() to Rust PCI drivers so they can query > how many SR-IOV VFs a device supports. > > Use a conditional C helper because the !CONFIG_PCI_IOV version of > pci_sriov_get_totalvfs() is a static inline function and is therefore > not emitted into the Rust bindings. Return Option> so Rust > callers must handle the zero value that represents unavailable SR-IOV. > > Reviewed-by: Alexandre Courbot > Cc: Alexandre Courbot > Cc: Bjorn Helgaas > Cc: David Laight > Cc: Gary Guo > Cc: linux-pci@vger.kernel.org > Link: https://lore.kernel.org/all/DJHPRE4TGGT8.BUTMYOF5YE05@nvidia.com/ > Signed-off-by: Zhi Wang The series looks ready to me, but we need a Ack on this patch to take it through drm-rust-next - Danilo, does this look ok to you?