From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from SA9PR02CU001.outbound.protection.outlook.com (mail-southcentralusazon11013049.outbound.protection.outlook.com [40.93.196.49]) (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 7B9E936996A; Tue, 24 Feb 2026 09:05:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.93.196.49 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771923938; cv=fail; b=hYScm8X4x6vHFteHZ/50dydITB0dCfNoelRwuqkpA9DU/efT0j4SdSvCjszXQKuGBbWFkweNfvShwZLi3ndrgdfFBk1xynZ/gwlJ9QxfTqbHeQbJIZf4WQxsQwuL2/BjVS8TqbVyNMXvJcJDu1kAPhUn6ln/JYtjBPk9ztvCuxA= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771923938; c=relaxed/simple; bh=nAn4s1VLe7EMMQ3lxrHUAlHEeLNQ3AoIcR6A73kA4+4=; h=Message-ID:Date:Subject:To:Cc:References:From:In-Reply-To: Content-Type:MIME-Version; b=CCjnLI6vBPMquxrnjlJwiPdrAlzCIu2utTEbp1iIKPYliFommZHlipCp4FmPzfzLaCHeFlmpi0BrbyluasyslBO6SmFr4xWLeex8UR75Ubx4TLuKjbb1NWdv8oesKV6WEQO+nmTc1swpvMPAThIfBvBOiHS4OY79LIXsAsJRDRY= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com; spf=fail smtp.mailfrom=amd.com; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b=atVTNsrO; arc=fail smtp.client-ip=40.93.196.49 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=amd.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b="atVTNsrO" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=Vn2VIAmpVzojhjUER1sS28/jzjwbWBRXKd2aLmmpA0CKY7m4TiYfLoN9awKjK9T+O7hJkTzAAhwVk2VxgicJpSQ3I57fnO0Y9rDXKrlTye2DhwFQ3/YK2W6GPqO40f9hEg+qUZlHVQHpft7wCAq2VMxp43ffDzpeipdmNfbAYR9JvbEwF6mRTfcpNWzwFi1jvXxM+Qvmm+Z/oYaUyhXbTLYtnkkF4hi5nHuYJsNU48BDhgYlgO2qAK7odMhynta55+r60DEK2SojqGp2ti+vpZ01t1OSOHvyAcWiEfmifGRxWjKPKTCOJpmAf5Fu8ZjNKjkOaMlN/GlCW9JYtCZ4kQ== 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=/q2RA13KlAidAJ2HGBW2CEUAubiRDkl6nc+87+TEeOw=; b=rM9MMt+eI5nEyd1vQrR3QKpsr4VrcTTHQ9iqBkCpUCgTUGkHurMjqfPXqn1/MKUBcoye7pbm1OynUOtBPxzoJkR6amo8n9GemYUHzalQ2/Yjlx94PJJoRnTfe9ZSIFHfB/iYkmVOicJTsFEpp9wuLZi2knC45GPWAFWGsb0U5DoOg8OhL1K/7vNthRTvS7ir0b3fpTsK3C4Q0R7N/oxV/V5mWMQrs0N5fag3y6kajUtUATc75OklrcdW1CMWih2Z+Vf4DdRPwOwzFblDQ9+5KUK+eD4WkPoYrFE3nvrG+zqZlD9CrgaZTGKM6/kZ0zipmezCtGvNkrgNEiKP2nk15A== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=amd.com; dmarc=pass action=none header.from=amd.com; dkim=pass header.d=amd.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=/q2RA13KlAidAJ2HGBW2CEUAubiRDkl6nc+87+TEeOw=; b=atVTNsrO9MC5XOFOjcpk6mbCsEhxb1mtYyqr53AdJckACxxtAuOIUypQ5j9r8rtqWO966+xqdOwucVKHuk1pVKKz7xsjkZf6pwM6UT/ahT/qyGyq6cDEm0UBlv1jNQs0UD/La+9MN4CIJD51Zx2GngXdZwOWMpiuACwMAdC7kQM= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=amd.com; Received: from PH7PR12MB5685.namprd12.prod.outlook.com (2603:10b6:510:13c::22) by CY5PR12MB6622.namprd12.prod.outlook.com (2603:10b6:930:42::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9632.22; Tue, 24 Feb 2026 09:05:34 +0000 Received: from PH7PR12MB5685.namprd12.prod.outlook.com ([fe80::ce69:cfae:774d:a65c]) by PH7PR12MB5685.namprd12.prod.outlook.com ([fe80::ce69:cfae:774d:a65c%5]) with mapi id 15.20.9632.017; Tue, 24 Feb 2026 09:05:34 +0000 Message-ID: Date: Tue, 24 Feb 2026 10:05:26 +0100 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH RFC 11/18] accel/qda: Add GEM_CREATE and GEM_MMAP_OFFSET IOCTLs To: Ekansh Gupta , Oded Gabbay , Jonathan Corbet , Shuah Khan , Joerg Roedel , Will Deacon , Robin Murphy , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Sumit Semwal Cc: dri-devel@lists.freedesktop.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, iommu@lists.linux.dev, linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org, Srinivas Kandagatla , Dmitry Baryshkov , Bharath Kumar , Chenna Kesava Raju References: <20260224-qda-firstpost-v1-0-fe46a9c1a046@oss.qualcomm.com> <20260224-qda-firstpost-v1-11-fe46a9c1a046@oss.qualcomm.com> Content-Language: en-US From: =?UTF-8?Q?Christian_K=C3=B6nig?= In-Reply-To: <20260224-qda-firstpost-v1-11-fe46a9c1a046@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-ClientProxiedBy: FR4P281CA0272.DEUP281.PROD.OUTLOOK.COM (2603:10a6:d10:e6::13) To PH7PR12MB5685.namprd12.prod.outlook.com (2603:10b6:510:13c::22) Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PH7PR12MB5685:EE_|CY5PR12MB6622:EE_ X-MS-Office365-Filtering-Correlation-Id: ff5f4599-7535-4410-b8ec-08de7383de89 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|7416014|376014|366016|921020; X-Microsoft-Antispam-Message-Info: =?utf-8?B?cHZRSUdWUVZEVmVNZ2lDVUdDbXBHU0FnZGJKSzZHYTVVOExMbHNwQTVML01G?= =?utf-8?B?Z0RVZWl5SGJNYjUyL2oxbklYdUlsTjFrZWVZNUZMTkFsWUovUXNwK1pjWGpp?= =?utf-8?B?cmZzSEhZV21GSnBqOTUweGY0Si9yTW8rSjRoR0F3b0JXNkFHcndPVlo3dHBm?= =?utf-8?B?S0tFM1JVSXZCZ083OEUzcWk3NDlMKzJFamhlblhNYkMyeVVkY1ZWZDQ4RDQ0?= =?utf-8?B?eGNrRTZvOURDZmYzVVQyRDlMT1NSZWNrTUlRSXRYRzhIU005VjBrK2FkeFBq?= =?utf-8?B?YzFoL3hEck9YNERUVjRTb1hDRGcwL0UwMnNrR2RRMSt4L2M3Y2pGeWJOMXJ6?= =?utf-8?B?Zk5GSGphZzdiTEVSLzdWUDN2Ly9Wd1BGWWh4dnVtKzdodUh4ZStJd3FtaFpv?= =?utf-8?B?cm1mcUUwajkycXN0VVMxQ0VLSUxsM25RNzV2RUlFR0pXeWIyMUNNaVJCT2l6?= =?utf-8?B?MFZWVlBXdEpaNG0yNGZXa1l5SXZUN3VwZGJxZUY1L0NOS0tLSXBxK2RrcTVr?= =?utf-8?B?aEh5VWZzK042M2tlQVJGNUpudkd0ZE1sS2Q0YlhDODBmVlkwYTJnL0o0Q3B2?= =?utf-8?B?SXN3NjUxSlgyT010UG94UUhaY0xKZDBMT2dDMHJJNEJVb0xQcHVTaXhZOCsx?= =?utf-8?B?ZFFLWkZTRGZIRTJFSTRuRmxVSzQyOWFwUGdHd3puZGFldDU2UmZxaWYxMzZ3?= =?utf-8?B?VWFObjFUQkxvUnhGVlN0Visxd1dtSWR1SkRSWSt6RG9vdmZRODZ0RUFLelcr?= =?utf-8?B?TjZEWUMzU0tlS1ZUSmlPZnFKMUppMDhUbUl6QXY1dml3TkhWMDdGN1pYTG9s?= =?utf-8?B?YWxPSXpGNUp4eDVHOHFENlJKS2M5ZEo0K0NPakNBUCtuL3R2RzN5cHVtMEt6?= =?utf-8?B?YXRTOVFHNWFPS21MdlBhVjd1amZpblJzZS9WUmtoVXB0OWtNOHhiSmp1TTJP?= =?utf-8?B?d0VRa0FKVHJUV081Mk81UWlFclQreHZERnhlWTNiUHI3QjJQVE51bThLTytO?= =?utf-8?B?WHhRRll4RjBvdnFnT3BwdGs2OWx2QXdGNWxPM1k5VkVHekQwek5XeFppTllt?= =?utf-8?B?eGV3UFRzb2F1aEhDMCtlTEc4WUhLVlNnTDljeTFjMXhRV0ZyZmdlcEJ6a1JZ?= =?utf-8?B?K0xVSTBYVm5mUFpaK1huVXFRc09UcUlXenFuVkN4ZDJub1hQMnhxWjhjYU9N?= =?utf-8?B?THVaYXpyYi9uSUhQd0NFY0VldkUrcDduWlF2R0JheEtDdWtZcWVBdXZndUFR?= =?utf-8?B?L2RQdnM1NUZ4NmZPWFRXUzlMemJ0dzR6N3hCSHY4VnNOa3VPQVltaEROUTRW?= =?utf-8?B?NVArOStMbjJSWkFvTlVtSjNPazlXR2YyVGFJMEFlVWpnWXBod0hGYWY2ZHNa?= =?utf-8?B?bnJiUmRBcE1sZmdBSlNGS3NXNGJvWGdhWDYyelRTUFQ5anZKNVhKUy9vQUlt?= =?utf-8?B?WXJCQ3Q2R3g2MmJyNFhUVWMyT2VDbjR6YVMrN2xwbncwRXlUUklEL0g0UDhu?= =?utf-8?B?QXpnT3BkRW1OVG5oT2Y5TjdpeDRlK1hsTkhEc2RzQWxha2t2eTFMbXNOdVl0?= =?utf-8?B?OFFlR29nRGY2ODVPYlpUR2t5aXV4N2Rya2w2WXZMY1EzK09yd0Q0QTFVamlG?= =?utf-8?B?UVN3OWo1UktWU05ucXhVd3FIUHRVZFdqRVltZnVDd1pKMWFySGtJMHBFYTZZ?= =?utf-8?B?OGJWeE9GOXQ4Z01wQVVUQ1BWU2xDd0ZRcHVMRHpxMVhDaDcyMXRwa0ozOXB0?= =?utf-8?B?dXVpVG1MWGJNTVlTTnpWNnRZTU81Y2NZL2RNbHpXRENoc0I1VVo5SXpSelc0?= =?utf-8?B?UlN3K01lcEk4VFNRQmZDaXdNd0p1OXdpcWxnV1dvS1loaWJob3VoMmxubkky?= =?utf-8?B?cGYxMUdmdzdjbm5lNWMwZmNNdTUreC9vMWh6T1NzaXN2ODdYb2s0cnRieDdD?= =?utf-8?B?Yll6ZmtFVGhqL0Rqdzg0MVFDY3NHVEh1bUZuZlViUXBWZmJVaUl0TXhoc2Iv?= =?utf-8?B?aHN3cWtkL1JrYjlSekRETk9HNjgwc09RaVRuaERXa0VOaXdrZEdxTElYbkNy?= =?utf-8?B?dExoQ2FMdlRucUhWR2swNllEYy9menZNUCtRNiswVzdzbGNyRjNFbWx1OUF1?= =?utf-8?B?WmhORmFCdyszWUE0cnhFMUtXR2xnYzdDK0pVdkJyWC93bzhCVDJvYWJndExG?= =?utf-8?B?MkE9PQ==?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:PH7PR12MB5685.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(1800799024)(7416014)(376014)(366016)(921020);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?cFBxSCtkalBHZVR0VjdXV2NvN04rMTJKalltTFh2RmpyYVcvc05qUmk0TnYw?= =?utf-8?B?c2dkbWdOZ1ZGbmY0RTVCSnFZeUxXeElwRFd6ZjAwU0xqczNHRHBNaWFQOW4v?= =?utf-8?B?aTdWYS9TZlA1YjI1YjVWNGFBYWJ3MlNKQXRnaHluNkNFeWEwU1NtTmtjekl6?= =?utf-8?B?L3VoYy9KRTB4d3NldjBzWmFaS0h1V09laG5PdEFnY2RacjRVVDNQSUtSMmtk?= =?utf-8?B?bm55SHBsLy9YSlBDYmJXbThwNG0wUnRCMWFxVTlaVlhyV0xJRmp4eEl3Tjgz?= =?utf-8?B?KzhoNE1IKzZBSlFHYjlvMnVwUkVHTkh0d1p0c3FEWjNzSXI5bXYyclhHa1NZ?= =?utf-8?B?aFUvanVSU245S0JGc01JU1ArcjlDQmNPV21lcHVUbnlDOGx1bHRCNnYvQjcx?= =?utf-8?B?Y2lPakNiZ29NMWswU2Q3enl4ajNqK0RRcHpYMElkaTYwR1Yvb2xRakhGdmpz?= =?utf-8?B?dzBmZWxESE4weEYxZFlNVzJtUHFXMm1zN25PTEhuSmxodGV0Q2pHbWszT0Nh?= =?utf-8?B?OGFNR0EvSHVCZW5yd3o4dU05M1dyb1FwcmNXeXVDRHpKdVdESnp1S0s1d0ph?= =?utf-8?B?L296N2xYNmExa2tRRmVNWVROMzQrMVBoampzWWZTQnRhbk82QWh1VE9jV2lq?= =?utf-8?B?dkd3cGQ2UXF0R2JxV0FtSW84dVU5VTBKTENTMk5ReGJrM2xzR083Yk00ZkdG?= =?utf-8?B?c05nT2lNMloya1Q3V25CVVFjNXZ0QjQ1M2pMRWdGeFlud2Z4MWZvaDI0Z01n?= =?utf-8?B?YUdiK2ZESDltUld0bWt3ZmZNYUxxMWUvSHhmcTJseE04QmFrWlN3UE8yZlBl?= =?utf-8?B?SmpOMjRpU2NhZFA1S2hNN0RKVnJmNGo4K2o4c3YyRkRjR0hoemRycnUxVmxz?= =?utf-8?B?LzVuRllOazJsRDRwelZvL1FWdDRlSE1kbFpScytuQnErZGFheWdCdW9qWXR1?= =?utf-8?B?SnJKNVl6ZHRLMzh5NWxHUEl2OTRZQUhHMW45TUphMU5yNFQ4dDZvN3k1bnhW?= =?utf-8?B?OHdaaXZIdCtraXpUbklWNlRQWGNsb2pESTk4WEZuUEVLa3VWSXlkNkU5bjV4?= =?utf-8?B?eWVYaGoxUi9GOVIrWUZLbjcyRURneFJsRTNmb1F4cWc3cUVjbzl1VDQrM2d0?= =?utf-8?B?bUs5VjFHeCswNlZTUG1WSjBOd2tKdkVZdVBpSThxODZab2FoSkpZQ0xEUjR5?= =?utf-8?B?SytUelhQbE41TFdZM1lDNUpPeEhLZjVvRmE3cTByL2Nia0JrYnc3MWVHbmVN?= =?utf-8?B?NyttdmFXYk1Ebks0NDNzSzVrZzA1NHVoWnJTNHNnOEozTUZQcVFqV1ozTVhU?= =?utf-8?B?b3dLQzhPL2Rjc2QwRS8wY3ZybGFXUllsWTBqNk5EeXduYjlHaittdUpBeVBV?= =?utf-8?B?WmVJOTRZY3QrelU4UnpXaUxXV3IxUGZpMHZTNHpWU1podUVzL0xiNVBpMlNo?= =?utf-8?B?TjA5c3ZkY0IvR1NkYURmaUdQbVFWWUNJaDZnQm5wWE5yVDNWcEFreUphOUpL?= =?utf-8?B?dk9YWjduR2txR0lyUGs2RU1yTkZiaGJTYVR0MWlyTDNiRUFVeHp0cURiellm?= =?utf-8?B?d0o0WmNXMmhaR2lYZzhoUW9RR2tDRXhJaFRHVVpCazV0TUowSjlCMlA5TFdE?= =?utf-8?B?R053MDN4OWswVnpaOE1FaHQzS3FQOU8rdkJsSm5WaHFqMlRCOG0vMWJlakZ6?= =?utf-8?B?emE0cnVVSHVUNS9pRHh4cUlXdjc4VGRYSThJUDhWaXVxTDFibnIvdHZGSVNX?= =?utf-8?B?UjhESW5FV0d6UGZCSTVyY1docURqdUl6T0lycFJ5aVBXeG40YlZSRXB0UXBV?= =?utf-8?B?dHIvM2NPOTk0SE1EY0JkM0hPQjVMT3pzSFJLdWJZT2ZscVBXL1J3TTRYSUU0?= =?utf-8?B?K2hZTHpJblo4WFJoS2VYSjdDRWdjcFBSajFSbzU2eno4MEg3Q2FIY0RXSFha?= =?utf-8?B?Z3QwTG9sanBCN2haZUp4SVdNclNqbDRhZnRCdXNIVDdUOURGcDFFdTZhTHpD?= =?utf-8?B?NXNudUN5K2d0UEZaUVYrd0RlWEhNMytzSWt2Z3krRE9ENmExdG1zdzgzTFF3?= =?utf-8?B?bDZDbzArU3pFVWdLOUJwd2Zkc29OWDZnazNoa003NW4yVkpiLytEVWdvbUVH?= =?utf-8?B?Ym1IaVdQMmdUaTZPaG15RXNhZDZMNkpDNlhXc0o1cE9GVVN5L1RPREpjTUtM?= =?utf-8?B?by8rMUt4aTlhcUtpSFBFcGp0ZDlJVE0vMWloOEdmWnVVbnJqejJyR2g2aEU5?= =?utf-8?B?aVRpOTEzNnRrcXNzNGppSURuRzRnUjEzbmtzWmFTRDdCYU1nOGFRc0EwVVhs?= =?utf-8?Q?E2kOj/RirDn/aQHBXx?= X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: ff5f4599-7535-4410-b8ec-08de7383de89 X-MS-Exchange-CrossTenant-AuthSource: PH7PR12MB5685.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Feb 2026 09:05:34.6924 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 8uilSOdKKggi20u92qHcHGkTornXB3iY3Sp9DPschDvv3n3yvAVlQICFGMlaAhrP X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY5PR12MB6622 On 2/23/26 20:09, Ekansh Gupta wrote: ... > +int qda_ioctl_gem_mmap_offset(struct drm_device *dev, void *data, struct drm_file *file_priv) > +{ > + struct drm_qda_gem_mmap_offset *args = data; > + struct drm_gem_object *gem_obj; > + int ret; > + > + gem_obj = qda_gem_lookup_object(file_priv, args->handle); > + if (IS_ERR(gem_obj)) > + return PTR_ERR(gem_obj); > + > + ret = drm_gem_create_mmap_offset(gem_obj); > + if (ret == 0) > + args->offset = drm_vma_node_offset_addr(&gem_obj->vma_node); > + > + drm_gem_object_put(gem_obj); > + return ret; You should probably use drm_gem_dumb_map_offset() instead of open coding this. Otherwise you allow mmap() of imported objects which is not allowed at all. Regards, Christian.