From nobody Fri Sep 25 00:40:12 2026 Received: from DM5PR21CU001.outbound.protection.outlook.com (mail-centralusazon11011024.outbound.protection.outlook.com [52.101.62.24]) (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 118D43B9DA6 for ; Fri, 18 Sep 2026 02:12:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.62.24 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789697561; cv=fail; b=tzUrEyPKyqYWunylXiJ8lhaCfTai9TLe4mSdLpXdKqyNFiYjgLQzPZ9dcQjWMK2B59KuwXN28k4DNMUJ3XK0oG1y4CDZbvbTTCOswIKcaMkKlNkUFyZQKjMXzR2dVsCJrGEVeIw9rk5jfJnQPnMuCcbfsbul4lZMsGKdjZEIOV0= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789697561; c=relaxed/simple; bh=jluCXE+Y9rLXUz/X/Xd8ATvDlFCJwmFvNmrA41EyH8M=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=Y4S8UjuV5my+6Fvv4psleDCDvkIzC94fK5iMQFTDP+J4zT+UMQ582JaryAplk5fLDUCT2ORFlNrdiynbWIUnUs/DEuVZXFAE20bZKnASxQukPDpwfBRBT+y/2pl/FPlpTlG/sH18mkp+nScWPTqyEpNAfeR0haYST4mKph0vyBI= 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=1I2Ptp4d; arc=fail smtp.client-ip=52.101.62.24 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="1I2Ptp4d" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=aej3aA+yLd/YqWvIVxEh0ABRaf1BN0t7JpJjQjHQ8O/eVJWL2BBUPAxyeHcIIFvvuNsXG9L0tr+0yZoVW5JEQRzEBMQhOWL2j3BvIoREKqgYouzT5FVxl9/SZgEcVQWp5ZZUPw04iLzJd4ZnJoZVnEtIC5r9DjEmGcUAs/I/VdMyhiiGBZePaM7QvspfssH65RL5OVWjTVwxE2W/I2RdrBndUE/8JLtem7NHt3kYMBonYJn+DSOZF5wdQ3nLekweZ1Vy8iYGgN4epfoZVvSYHg9yG5F4OB7P/Tjvxpi9ELw/sUYs5/jHPttlKVzEasHAdYyREac7/lM1iZ9PiBe5Aw== 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=FPZgi3EZoiK37BEgU8VWTDJ16nfVL1aGE1DlxaQkN8A=; b=UT695jXiX+omeYbB+DqqM5bV2Mwd1/1OzqgZqzl0kqlS+Llwth86ac89MvWOWVgeHNi3HAnqqx6wSpOvsliNmgqxKA/WSnTCCtZ7NVvtAVLIv/x0knqEaAufa6dv/Lqu1t+r8gm1Vg/Z/zU5mbwRU3615C3gV2UNyEzw6VFHMiNsFS14IAJYR/5dQDLcP42rMNAXT3GaLAreQ18ycz9w4N9iP1UEefb03ofPYIYO6bC9Cl+YcFVgcp9tidGkLwyYKru35J5cBbazBsXDr2ywa7YG673rWrtLUtPFa6qSw4NF7516P54ofu9gCXCrHSPoe8JbETw8tYplOJJLYJreXQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=collabora.com smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none (0) 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=FPZgi3EZoiK37BEgU8VWTDJ16nfVL1aGE1DlxaQkN8A=; b=1I2Ptp4d6oM0KcSKi/VmtuCC81jhCw2VrsgIKW7og03kjED1Wr7i+r1t3xX+aMsDuKer+M0/uxVCEONleh7asWHCG8SlwbP6D/uXcP5E14PvZO79PuEKszlI8AIsYbjC/kPZ+3bTfuUdC640qB2y4Jx9V+EPq8Ok/tWvFaW+41E= Received: from PH1PEPF00013314.namprd07.prod.outlook.com (2603:10b6:518:1::6) by SA1PR12MB7341.namprd12.prod.outlook.com (2603:10b6:806:2ba::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.406.12; Fri, 18 Sep 2026 02:12:17 +0000 Received: from SJ1PEPF000023D8.namprd21.prod.outlook.com (2a01:111:f403:c902::13) by PH1PEPF00013314.outlook.office365.com (2603:1036:903:47::9) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.21.406.10 via Frontend Transport; Fri, 18 Sep 2026 02:12:16 +0000 X-MS-Exchange-Authentication-Results: mx.microsoft.com 1; spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=satlexmb07.amd.com; pr=C Received: from satlexmb07.amd.com (165.204.84.17) by SJ1PEPF000023D8.mail.protection.outlook.com (10.167.244.73) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.451.0 via Frontend Transport; Fri, 18 Sep 2026 02:12:16 +0000 Received: from honglei-remote.amd.com (10.180.168.240) by satlexmb07.amd.com (10.181.42.216) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.49; Thu, 17 Sep 2026 21:12:13 -0500 From: Honglei Huang To: Dmitry Osipenko , Akihiko Odaki , David Airlie , "Gerd Hoffmann" CC: Gurchetan Singh , Chia-I Wu , Ray Huang , , , , Honglei Huang Subject: [PATCH v7 1/4] drm/virtio-gpu: Add VIRTIO_GPU_CAPSET_ROCM capability Date: Fri, 18 Sep 2026 10:11:51 +0800 Message-ID: <20260918021154.1432154-2-honghuan@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260918021154.1432154-1-honghuan@amd.com> References: <20260918021154.1432154-1-honghuan@amd.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: satlexmb07.amd.com (10.181.42.216) To satlexmb07.amd.com (10.181.42.216) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ1PEPF000023D8:EE_|SA1PR12MB7341:EE_ X-MS-Office365-Filtering-Correlation-Id: f4909c2d-9738-45df-cfaa-08df152a430d X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700016|376014|23010399003|82310400026|1800799024|56012099006|11063799006|10067099003|22082099003|18002099003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:satlexmb07.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(36860700016)(376014)(23010399003)(82310400026)(1800799024)(56012099006)(11063799006)(10067099003)(22082099003)(18002099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: rHB5SyVfSfFM+/259p1FX5BGEg47f4iK7u7S/6H3T/APVZ/hG8kRpXl+GPobIjaHYr+Tfsb/vroyfUeISe7/h+xaMNgBpDnLfq7hrag7gB8nBUQdJHaRmjIYzl/RHLRyhH/Frdy59OEEFyU0qeNy4pJl2CQDBqV8Hj9zi39SiDg1wGdl3SUWXeQBs6DQsCTz5qhReQFLu6DXlWGoWxjGp4wSqQuUCCYMg09Q7jSX9BxtTlasS9j5GPk+hsPVVe0o2vuiw+sdNo79d0M+KR+fEzTjJqIH/1g+1gs7k+qhzf2Y8DJDCQoReK2Czl7kDT5vuJzx9C7L8CobT1IgNfjo7NCSMTTM60wB+Oykmcv4sIk7pmwiNO+CoCgMTVt/9OUr+j+HoP36fS+4KjufIq+MZUcPPRh0efdbrBLd6rG1ooOqoprqBOXbYW8d5vfjtiku X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Sep 2026 02:12:16.6440 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: f4909c2d-9738-45df-cfaa-08df152a430d X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: SJ1PEPF000023D8.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA1PR12MB7341 Content-Type: text/plain; charset="utf-8" Add a new GPU capability set VIRTIO_GPU_CAPSET_ROCM to support ROCm compute workloads in virtualized environments. ROCm (Radeon Open Compute) is AMD's open-source software platform for GPU compute and HPC workloads. ID 7 is already used by VIRCL in the virgl/virtio-gpu stack, so ROCm uses ID 8. A matching virtio-gpu specification change is in progress to register this assignment. Signed-off-by: Honglei Huang --- include/uapi/linux/virtio_gpu.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/uapi/linux/virtio_gpu.h b/include/uapi/linux/virtio_gp= u.h index 4f530d9005..3d4dfadc9d 100644 --- a/include/uapi/linux/virtio_gpu.h +++ b/include/uapi/linux/virtio_gpu.h @@ -321,6 +321,7 @@ struct virtio_gpu_cmd_submit { #define VIRTIO_GPU_CAPSET_VENUS 4 #define VIRTIO_GPU_CAPSET_CROSS_DOMAIN 5 #define VIRTIO_GPU_CAPSET_DRM 6 +#define VIRTIO_GPU_CAPSET_ROCM 8 =20 /* VIRTIO_GPU_CMD_GET_CAPSET_INFO */ struct virtio_gpu_get_capset_info { --=20 2.34.1 From nobody Fri Sep 25 00:40:13 2026 Received: from BYAPR05CU005.outbound.protection.outlook.com (mail-westusazon11010023.outbound.protection.outlook.com [52.101.85.23]) (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 D1DFD3BED31 for ; Fri, 18 Sep 2026 02:12:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.85.23 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789697545; cv=fail; b=r62P0kJGl9MPWMdbZC14i2xauWwyb5FSlxZLSbcje/8v/Vxi+NFMXvMNRjzemyEamrQA8STn5pWBB2caFvmS0/HfYEmQT3g8XMCHauy0mPZ3FSQOyAxXWT+qFWYILLOlXjz5kMbif8Z2w/fqs5ZiU1ERV3eohQk+RI1V+a8Kypk= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789697545; c=relaxed/simple; bh=z916DXQ9wXtwcF7TuLeQvFxojxHrGjiSBlCRtSW/Dpo=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=MkB51Fsil/lyoaoMq+prJJ5eQVvabRQSnvs1oUICqm0YuvHJSTCiyWUHF5ui02TzNTUyXKDljPGM5wH63DFye8g340+LutprQ67B/Ifa2nG4b8x7PCLTpmtSIG9zEvru0AS/0L8bofzsgN1jBi6rWt+oVY0TEhBf80/Qe19JUxw= 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=jFNjylSj; arc=fail smtp.client-ip=52.101.85.23 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="jFNjylSj" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=CyB9dNfhwzOSCgrp+UY8Y8eiJQMg6SIRxS5I7Nm9ldlVKe5bJsGNQK6weY4n9EqYu/sNx0rL3LKVgWjgdBBRgwO7YI2AVX2jKbz0rmNcfauRbRRII3NRhrHPt9VBXf/4MuaGHScYCtsrQvszFHsPojZbO8DsO0qa9am0Jfkh/3uJmXXAvIkl9bte3veWmIzmiFVvgJzhJu5UhgwjtwUppStoyjIjcHQbJ+ZuN1CPYYB0vqB5ejwVDLZ0thkwMOUF/rHt7OMncxnovYoA2Ez3gHTNQFO/735eB9WB6hWPGpXswN/6RXEwbbw1IUgrRB9yyilc4mKd6Y4HVVv62btyVQ== 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=yDxL3z6p5SsREHtPP551hmUkLs/GzCim7aKlqTkTeR8=; b=KrAuoFzja/vObo31ba92480S4btQkRPeHVeSC+To7JuJkKB8MI0F1lJZHywsCBsYqbRgyfBW+AMmKNHKw6w93e72oLGVfNWCqTxcz4J7Jd7lVjeGvLAy8WJAw0JLFcmeC0YxEhpuM6PeA1KDz9R0AUnB/VAPpSzkUnup3jBQnxfwvv+J8iVoXdpylEUO2DPz1aW78aNMAtUl9/B7RL7/ClyFSy+USIPOccAflayYXoTo9wzIHhchBAO18zBataAnaiD02OaGpFto+e0vyZFdWOmCwE9jSdZMrVUz7TKWRaBZNiCmVlwEZmo8Vqj3pZjgFa6IgFbuSNL4NfW5KoPK9w== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=collabora.com smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none (0) 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=yDxL3z6p5SsREHtPP551hmUkLs/GzCim7aKlqTkTeR8=; b=jFNjylSjYLpHvt4a6zf5EE3mVI2enXaeJoZVYys35Rq4ur/dawR2zgvh88Gz/0Y11hnu42O9+MuAreIlgj+NrZ3LMUTWHTcfYjhTIePEB5HFlwUrzYb0ISeq2Mq+uD0JAxEBf2Hv89g+uZm6690pehPQoM38DgQTmnLX+2AeUv8= Received: from PH7P221CA0043.NAMP221.PROD.OUTLOOK.COM (2603:10b6:510:33c::31) by SA1PR12MB6798.namprd12.prod.outlook.com (2603:10b6:806:25a::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.428.13; Fri, 18 Sep 2026 02:12:19 +0000 Received: from SJ1PEPF000023D7.namprd21.prod.outlook.com (2603:10b6:510:33c:cafe::35) by PH7P221CA0043.outlook.office365.com (2603:10b6:510:33c::31) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.21.428.12 via Frontend Transport; Fri, 18 Sep 2026 02:12:19 +0000 X-MS-Exchange-Authentication-Results: mx.microsoft.com 1; spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=satlexmb07.amd.com; pr=C Received: from satlexmb07.amd.com (165.204.84.17) by SJ1PEPF000023D7.mail.protection.outlook.com (10.167.244.72) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.451.0 via Frontend Transport; Fri, 18 Sep 2026 02:12:19 +0000 Received: from honglei-remote.amd.com (10.180.168.240) by satlexmb07.amd.com (10.181.42.216) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.49; Thu, 17 Sep 2026 21:12:16 -0500 From: Honglei Huang To: Dmitry Osipenko , Akihiko Odaki , David Airlie , "Gerd Hoffmann" CC: Gurchetan Singh , Chia-I Wu , Ray Huang , , , , Honglei Huang Subject: [PATCH v7 2/4] drm/virtgpu api: add blob userptr resource Date: Fri, 18 Sep 2026 10:11:52 +0800 Message-ID: <20260918021154.1432154-3-honghuan@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260918021154.1432154-1-honghuan@amd.com> References: <20260918021154.1432154-1-honghuan@amd.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: satlexmb07.amd.com (10.181.42.216) To satlexmb07.amd.com (10.181.42.216) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ1PEPF000023D7:EE_|SA1PR12MB6798:EE_ X-MS-Office365-Filtering-Correlation-Id: a4c49da6-a03b-4bae-374b-08df152a44b4 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|23010399003|376014|1800799024|82310400026|36860700016|22082099003|18002099003|56012099006|11063799006|10067099003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:satlexmb07.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(23010399003)(376014)(1800799024)(82310400026)(36860700016)(22082099003)(18002099003)(56012099006)(11063799006)(10067099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: mSpJIHeif5SYF0rwpI03QvAoA+fCmghC/I5vmkxo4MZRuBGiby+x0n8BYq2Y3UEhOrrk+e3qVSzORyFGmIQ1HHSqnMXUP3tjXhfXR9LeUuBEJERZVLBtyO/Q6BaQQw2b+cgZgQC1iWrtGLe1aS5sig9Rb1A+/ib0ayT550CdtscJi+MytZELmVTufSdioWZySP/t/OJft/aS2XkTbFnzBcvdZlz6lkkutGBpyO8dr1RDQxzJN53DM8y3Noebeyd3HcrjgU3Mhls8KF85SVg+F5B1X3OkKWhpipqI1RHVczJ0CEITethiGWwy7Ism4I+LoNMsCsdjVSATBiqcEG2LO72c1ynZ+qXiIYiaIZ1Vbp8ACibf8oGzSdTNoW1PW/JyuRLZAcuRyrCKxfLglFpdDCMfkn1F8YHud280aKJiFC0VBI/wwsT8WZF1v54Phxq/ X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Sep 2026 02:12:19.4105 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: a4c49da6-a03b-4bae-374b-08df152a44b4 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: SJ1PEPF000023D7.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA1PR12MB6798 Content-Type: text/plain; charset="utf-8" Add DRM ioctl flags and a userptr address field so userspace can request a blob backed by an existing process mapping. UAPI changes: - Add guest-only VIRTGPU_BLOB_FLAG_USE_USERPTR and VIRTGPU_BLOB_FLAG_USERPTR_RDONLY flags - Add a userptr field to drm_virtgpu_resource_create_blob These flags select guest pin behavior in the ioctl. They are not part of the virtio CREATE_BLOB wire ABI, so mask them out in virtio_gpu_cmd_resource_create_blob(). Signed-off-by: Honglei Huang --- drivers/gpu/drm/virtio/virtgpu_vq.c | 6 +++++- include/uapi/drm/virtgpu_drm.h | 9 +++++++++ 2 files changed, 14 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/v= irtgpu_vq.c index c02c03c10d..6830673309 100644 --- a/drivers/gpu/drm/virtio/virtgpu_vq.c +++ b/drivers/gpu/drm/virtio/virtgpu_vq.c @@ -1494,7 +1494,11 @@ virtio_gpu_cmd_resource_create_blob(struct virtio_gp= u_device *vgdev, cmd_p->hdr.ctx_id =3D cpu_to_le32(params->ctx_id); cmd_p->resource_id =3D cpu_to_le32(bo->hw_res_handle); cmd_p->blob_mem =3D cpu_to_le32(params->blob_mem); - cmd_p->blob_flags =3D cpu_to_le32(params->blob_flags); + /* Guest-only flags stay off the wire. */ + cmd_p->blob_flags =3D cpu_to_le32(params->blob_flags & + (VIRTIO_GPU_BLOB_FLAG_USE_MAPPABLE | + VIRTIO_GPU_BLOB_FLAG_USE_SHAREABLE | + VIRTIO_GPU_BLOB_FLAG_USE_CROSS_DEVICE)); cmd_p->blob_id =3D cpu_to_le64(params->blob_id); cmd_p->size =3D cpu_to_le64(params->size); cmd_p->nr_entries =3D cpu_to_le32(nents); diff --git a/include/uapi/drm/virtgpu_drm.h b/include/uapi/drm/virtgpu_drm.h index 95587e12ae..62c4b8f19b 100644 --- a/include/uapi/drm/virtgpu_drm.h +++ b/include/uapi/drm/virtgpu_drm.h @@ -186,6 +186,9 @@ struct drm_virtgpu_resource_create_blob { #define VIRTGPU_BLOB_FLAG_USE_MAPPABLE 0x0001 #define VIRTGPU_BLOB_FLAG_USE_SHAREABLE 0x0002 #define VIRTGPU_BLOB_FLAG_USE_CROSS_DEVICE 0x0004 +/* Guest-only flags */ +#define VIRTGPU_BLOB_FLAG_USE_USERPTR 0x0008 +#define VIRTGPU_BLOB_FLAG_USERPTR_RDONLY 0x0010 /* zero is invalid blob_mem */ __u32 blob_mem; __u32 blob_flags; @@ -205,6 +208,12 @@ struct drm_virtgpu_resource_create_blob { #define DRM_VIRTGPU_BLOB_FLAG_HINT_DEFER_MAPPING 0x0001 __u32 blob_hints; __u32 pad2; + + /* + * userptr: guest userspace memory address for VIRTGPU_BLOB_FLAG_USE_USER= PTR. + * Must be 0 if VIRTGPU_BLOB_FLAG_USE_USERPTR is not set. + */ + __u64 userptr; }; =20 #define VIRTGPU_CONTEXT_PARAM_CAPSET_ID 0x0001 --=20 2.34.1 From nobody Fri Sep 25 00:40:13 2026 Received: from SJ2PR03CU001.outbound.protection.outlook.com (mail-westusazon11012019.outbound.protection.outlook.com [52.101.43.19]) (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 0986E3BBA08 for ; Fri, 18 Sep 2026 02:12:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.43.19 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789697552; cv=fail; b=GstJAoqTwJeOj3Acn8TdZX9CF8cAJ5AEDs3UHMiBDp55h0fUhhV/1rXWocnX6yaWd/HM9L1guIKNPSBDH3vot6B1VGAWt1G1q9SFVxT/XlqD9/DhLiCANGjwoxy5GXFIzq+a1COQ8pyLK66u+jJtNF2XhB91m+wV5p8YXLimjbg= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789697552; c=relaxed/simple; bh=RZEb8aX39UIz3ffH0ZXSJ6cnKbjJ4viROv8l/6ZpkMQ=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=KQzsqjsWqS0ftKYNGK/gbFdJ5vM/TayikjNLrQDiJrlaE8FRuySQX0xBB7bSmfervKqKlH5av8SSagxNmxHgR8fnYyhmouR/2BHmmt+ZUcnHvqXjLRHLyfO6SRe8l19uRPOYj7KRf2C/lqK4wc+KONuiSaH4mWJFMg/X+G8VnkU= 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=hFenUsMR; arc=fail smtp.client-ip=52.101.43.19 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="hFenUsMR" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=nzUDC3eRLq/JVtY8F1e26WKtqf9VJK1v39OfX+to6lx2f7AKyEu0GILUrS4Fy1UxfG2HR/4RHcHcembi4uCquu3i1vkVBssBsOwpZf0NOUrpZXEd910m2VS/2u2MXm+xjlhxZcC5E582ibl9xuGZNfhywICBLEp/TMfnu1fV629+ixCM8DTVSLkdXQDZWlt57Uk0nJCOONRSU14ksDKWNYk9nRAbmmmXQLlvWyR3DXCmN0J7uaIywEUEVf+MXH+Q38qfvDNAqvXikVjJygP0xAXBa8PtMAf/cfi7ZYZQQoEbbbvH642clp8irRQkHc/TFqWjusnPVrspgzzkKEFb2A== 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=EYAVmYlQoSdPOTjPqgJLhAUeJukYVfkKfgTOlGBHQx8=; b=vByT4O5iMuD/BXzI16NJ5IQ1LIzQjvnQIYLWAp5h+P5xW/EvmDvT6SdTUmCLA0EQLFaqfKWxEVXqpNhyN9WkOvv9/4/AjcLYmuwSJ8dYeih8G8clPu+WapbiY2rwmz7WIauM7pqwBx8dwpgkcTIxghaMvv+L3KJ2sufipKFpkxrh7nACJE7l3sByUHg+clzrlhNH+Cesem6Nf59t929z272fciksE+vTURKW9wrDLHkqeGKHKjJ2XiVEfeKyraGvnIV9zZhdv50cHK87DCxgf+Xg1QFCZf9n2xmB3INGDSpS36TRdQX1chVO2TcpNshlvOtRDt5Mkgb935FdnNN0Wg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=collabora.com smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none (0) 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=EYAVmYlQoSdPOTjPqgJLhAUeJukYVfkKfgTOlGBHQx8=; b=hFenUsMR6Qa2EpF9K4/2ZgYa5MXQs9dXj82aLKzYuQmINqTQGkKQYNRe1fjiy5dV8avY+uh0yeR5+MacZ+Ziq9jTA5gVA0iQ/iHYFpT6JukPxnFvdZWxZo7Y38rNMPEbnwGPHm07ye8wbzeNTjIfqgKkIcyWyfWOyquNksYpjp8= Received: from SJ0PR03CA0337.namprd03.prod.outlook.com (2603:10b6:a03:39c::12) by DS0PR12MB999287.namprd12.prod.outlook.com (2603:10b6:8:424::5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.428.13; Fri, 18 Sep 2026 02:12:23 +0000 Received: from SJ1PEPF000023D3.namprd21.prod.outlook.com (2603:10b6:a03:39c:cafe::11) by SJ0PR03CA0337.outlook.office365.com (2603:10b6:a03:39c::12) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.21.428.12 via Frontend Transport; Fri, 18 Sep 2026 02:12:22 +0000 X-MS-Exchange-Authentication-Results: mx.microsoft.com 1; spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=satlexmb07.amd.com; pr=C Received: from satlexmb07.amd.com (165.204.84.17) by SJ1PEPF000023D3.mail.protection.outlook.com (10.167.244.68) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.451.0 via Frontend Transport; Fri, 18 Sep 2026 02:12:22 +0000 Received: from honglei-remote.amd.com (10.180.168.240) by satlexmb07.amd.com (10.181.42.216) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.49; Thu, 17 Sep 2026 21:12:19 -0500 From: Honglei Huang To: Dmitry Osipenko , Akihiko Odaki , David Airlie , "Gerd Hoffmann" CC: Gurchetan Singh , Chia-I Wu , Ray Huang , , , , Honglei Huang Subject: [PATCH v7 3/4] drm/virtio: implement userptr support for zero-copy memory access Date: Fri, 18 Sep 2026 10:11:53 +0800 Message-ID: <20260918021154.1432154-4-honghuan@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260918021154.1432154-1-honghuan@amd.com> References: <20260918021154.1432154-1-honghuan@amd.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: satlexmb07.amd.com (10.181.42.216) To satlexmb07.amd.com (10.181.42.216) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ1PEPF000023D3:EE_|DS0PR12MB999287:EE_ X-MS-Office365-Filtering-Correlation-Id: d410f575-487e-4849-ee6f-08df152a4686 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700016|82310400026|23010399003|1800799024|376014|10067099003|5023799004|11063799006|56012099006|22082099003|18002099003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:satlexmb07.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(36860700016)(82310400026)(23010399003)(1800799024)(376014)(10067099003)(5023799004)(11063799006)(56012099006)(22082099003)(18002099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: rAMHeyxB22dAOrR0oX5qAv67sxGqOv+XYHWd7KUsfsZTWcfXejoQyQ5dFpAOf1a8NDrELyFH9WKE5dEggNvg9ZlOsIWslRl0tnlN+7tsG3hQPe6BCXyn6eJsHjNKDjXcsAZSdrivlkXqeV3W0taFTh68OJD9UGT/6X7uFN8CpWzpjROXxF07kd0p9TE6YMyjnVXZIkNCAwppb2nlrLSwaVsXfspmn5VSMKKp/HjalDJOHkxjHwadSH+96QiuaZvcICM5JlsPUpPnsbkvJzeeqZgA4WIATBIorjrMvsDzWFChUw2Zpqgr8YbFfFiLrFi00pUjwyA2Urou4RoSa4LBWtxXcYlxMfxDt6t5nNVqO+XQNT6Xg7N349gvlgWhdu5GEG1lOjEMiMC0x54ena7YeSQdVXfoxt6Effg2C/i5jKlR7qQE23Fnx3hQVXIdPaOr X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Sep 2026 02:12:22.5322 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: d410f575-487e-4849-ee6f-08df152a4686 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: SJ1PEPF000023D3.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR12MB999287 Content-Type: text/plain; charset="utf-8" Add userptr blob objects so the guest kernel can pin an existing userspace mapping and advertise it as CREATE_BLOB backing entries. - New virtio_gpu_object_userptr type for userptr resources - Pin pages with pin_user_pages_fast() and FOLL_LONGTERM - Charge FOLL_LONGTERM pins against RLIMIT_MEMLOCK - DMA-map the scatterlist only when virtio_gpu_use_dma_api() is required; use DMA_TO_DEVICE for USERPTR_RDONLY - Keep pages pinned until RESOURCE_UNREF is queued; drop them from cleanup_object() on the unref response or on create failure - Clear userptr->pages on pin failure to avoid double-free on cleanup - Reject unaligned or overflowing userptr ranges at create time - Return a fresh SG table from PRIME export Signed-off-by: Honglei Huang --- drivers/gpu/drm/virtio/Makefile | 3 +- drivers/gpu/drm/virtio/virtgpu_drv.h | 37 +++ drivers/gpu/drm/virtio/virtgpu_object.c | 10 + drivers/gpu/drm/virtio/virtgpu_userptr.c | 335 +++++++++++++++++++++++ 4 files changed, 384 insertions(+), 1 deletion(-) create mode 100644 drivers/gpu/drm/virtio/virtgpu_userptr.c diff --git a/drivers/gpu/drm/virtio/Makefile b/drivers/gpu/drm/virtio/Makef= ile index d2e1788a82..fe7332a621 100644 --- a/drivers/gpu/drm/virtio/Makefile +++ b/drivers/gpu/drm/virtio/Makefile @@ -6,6 +6,7 @@ virtio-gpu-y :=3D virtgpu_drv.o virtgpu_kms.o virtgpu_gem.o virtgpu_vram.o= \ virtgpu_display.o virtgpu_vq.o \ virtgpu_fence.o virtgpu_object.o virtgpu_debugfs.o virtgpu_plane.o \ - virtgpu_ioctl.o virtgpu_prime.o virtgpu_trace_points.o virtgpu_submit.o + virtgpu_ioctl.o virtgpu_prime.o virtgpu_trace_points.o virtgpu_submit.o \ + virtgpu_userptr.o =20 obj-$(CONFIG_DRM_VIRTIO_GPU) +=3D virtio-gpu.o diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/= virtgpu_drv.h index 9df4c71173..03791b72ca 100644 --- a/drivers/gpu/drm/virtio/virtgpu_drv.h +++ b/drivers/gpu/drm/virtio/virtgpu_drv.h @@ -105,6 +105,7 @@ struct virtio_gpu_object_params { uint32_t blob_flags; uint64_t blob_id; uint32_t blob_hints; + uint64_t userptr; }; =20 struct virtio_gpu_object { @@ -138,12 +139,42 @@ struct virtio_gpu_object_vram { struct drm_mm_node vram_node; }; =20 +struct virtio_gpu_object_userptr; + +struct virtio_gpu_object_userptr_ops { + int (*get_pages)(struct virtio_gpu_object_userptr *userptr); + void (*put_pages)(struct virtio_gpu_object_userptr *userptr); +}; + +struct virtio_gpu_object_userptr { + struct virtio_gpu_object base; + const struct virtio_gpu_object_userptr_ops *ops; + /* Protects pages and sgt. */ + struct mutex lock; + + uint64_t start; + uint32_t npages; + uint32_t bo_handle; + uint32_t flags; + + struct virtio_gpu_device *vgdev; + struct drm_file *file; + struct page **pages; + struct sg_table *sgt; + bool dma_mapped; + enum dma_data_direction dma_dir; + struct mm_struct *mm; +}; + #define to_virtio_gpu_shmem(virtio_gpu_object) \ container_of((virtio_gpu_object), struct virtio_gpu_object_shmem, base) =20 #define to_virtio_gpu_vram(virtio_gpu_object) \ container_of((virtio_gpu_object), struct virtio_gpu_object_vram, base) =20 +#define to_virtio_gpu_userptr(virtio_gpu_object) \ + container_of((virtio_gpu_object), struct virtio_gpu_object_userptr, base) + struct virtio_gpu_object_array { struct ww_acquire_ctx ticket; struct list_head next; @@ -562,4 +593,10 @@ void virtio_gpu_vram_map_deferred(struct virtio_gpu_ob= ject_vram *vram); int virtio_gpu_execbuffer_ioctl(struct drm_device *dev, void *data, struct drm_file *file); =20 +/* virtgpu_userptr.c */ +int virtio_gpu_userptr_create(struct virtio_gpu_device *vgdev, + struct drm_file *file, + struct virtio_gpu_object_params *params, + struct virtio_gpu_object **bo_ptr); +bool virtio_gpu_is_userptr(struct virtio_gpu_object *bo); #endif diff --git a/drivers/gpu/drm/virtio/virtgpu_object.c b/drivers/gpu/drm/virt= io/virtgpu_object.c index 49899485be..5c40f5a034 100644 --- a/drivers/gpu/drm/virtio/virtgpu_object.c +++ b/drivers/gpu/drm/virtio/virtgpu_object.c @@ -91,6 +91,16 @@ void virtio_gpu_cleanup_object(struct virtio_gpu_object = *bo) drm_gem_free_mmap_offset(&vram->base.base.base); drm_gem_object_release(&vram->base.base.base); kfree(vram); + } else if (virtio_gpu_is_userptr(bo)) { + struct virtio_gpu_object_userptr *userptr =3D + to_virtio_gpu_userptr(bo); + + mutex_lock(&userptr->lock); + userptr->ops->put_pages(userptr); + mutex_unlock(&userptr->lock); + mutex_destroy(&userptr->lock); + drm_gem_object_release(&userptr->base.base.base); + kfree(userptr); } else { drm_gem_object_release(&bo->base.base); kfree(bo); diff --git a/drivers/gpu/drm/virtio/virtgpu_userptr.c b/drivers/gpu/drm/vir= tio/virtgpu_userptr.c new file mode 100644 index 0000000000..0097554897 --- /dev/null +++ b/drivers/gpu/drm/virtio/virtgpu_userptr.c @@ -0,0 +1,335 @@ +// SPDX-License-Identifier: GPL-2.0 +#include +#include +#include +#include +#include +#include +#include +#include + +#include "virtgpu_drv.h" +#include +#include + +static struct sg_table * +virtio_gpu_userptr_get_sg_table(struct drm_gem_object *obj); + +static void virtio_gpu_userptr_free(struct drm_gem_object *obj) +{ + struct virtio_gpu_object *bo =3D gem_to_virtio_gpu_obj(obj); + struct virtio_gpu_device *vgdev =3D obj->dev->dev_private; + + /* + * Keep pages pinned until RESOURCE_UNREF completes. The response + * callback calls virtio_gpu_cleanup_object(), which drops them. + */ + if (bo->created) { + virtio_gpu_remove_from_restore_list(bo); + virtio_gpu_cmd_unref_resource(vgdev, bo, false); + virtio_gpu_notify(vgdev); + return; + } + + virtio_gpu_cleanup_object(bo); +} + +static const struct drm_gem_object_funcs virtio_gpu_userptr_funcs =3D { + .open =3D virtio_gpu_gem_object_open, + .close =3D virtio_gpu_gem_object_close, + .free =3D virtio_gpu_userptr_free, + .export =3D virtgpu_gem_prime_export, + .get_sg_table =3D virtio_gpu_userptr_get_sg_table, +}; + +bool virtio_gpu_is_userptr(struct virtio_gpu_object *bo) +{ + return bo->base.base.funcs =3D=3D &virtio_gpu_userptr_funcs; +} + +static int +virtio_gpu_userptr_get_pages(struct virtio_gpu_object_userptr *userptr) +{ + unsigned int flag =3D FOLL_LONGTERM; + unsigned int num_pages, pinned =3D 0; + int ret =3D 0; + + if (userptr->pages) + return 0; + + userptr->pages =3D kvmalloc_array(userptr->npages, sizeof(struct page *), + GFP_KERNEL); + if (!userptr->pages) + return -ENOMEM; + + if (!(userptr->flags & VIRTGPU_BLOB_FLAG_USERPTR_RDONLY)) + flag |=3D FOLL_WRITE; + + do { + num_pages =3D userptr->npages - pinned; + + ret =3D pin_user_pages_fast(userptr->start + pinned * PAGE_SIZE, + num_pages, flag, + userptr->pages + pinned); + + if (ret < 0) { + if (pinned) + unpin_user_pages(userptr->pages, pinned); + kvfree(userptr->pages); + userptr->pages =3D NULL; + return ret; + } + + pinned +=3D ret; + + } while (pinned < userptr->npages); + + return 0; +} + +static void +virtio_gpu_userptr_unaccount(struct virtio_gpu_object_userptr *userptr) +{ + if (!userptr->mm) + return; + + atomic64_sub(userptr->npages, &userptr->mm->pinned_vm); + mmdrop(userptr->mm); + userptr->mm =3D NULL; +} + +static void +virtio_gpu_userptr_put_pages(struct virtio_gpu_object_userptr *userptr) +{ + struct drm_device *dev =3D userptr->base.base.base.dev; + + if (userptr->sgt) { + if (userptr->dma_mapped) + dma_unmap_sgtable(drm_dev_dma_dev(dev), userptr->sgt, + userptr->dma_dir, 0); + userptr->dma_mapped =3D false; + sg_free_table(userptr->sgt); + kfree(userptr->sgt); + userptr->sgt =3D NULL; + } + + if (userptr->pages) { + unpin_user_pages(userptr->pages, userptr->npages); + kvfree(userptr->pages); + userptr->pages =3D NULL; + } + + virtio_gpu_userptr_unaccount(userptr); +} + +static int +virtio_gpu_userptr_get_entries(struct virtio_gpu_device *vgdev, + struct virtio_gpu_object_userptr *userptr, + struct virtio_gpu_mem_entry **ents, + unsigned int *nents) +{ + bool use_dma_api =3D virtio_gpu_use_dma_api(vgdev->vdev); + struct scatterlist *sg; + unsigned int count; + int si; + + count =3D use_dma_api ? userptr->sgt->nents : userptr->sgt->orig_nents; + if (!count) + return -EINVAL; + + *ents =3D kvmalloc_array(count, sizeof(**ents), GFP_KERNEL); + if (!*ents) + return -ENOMEM; + + if (use_dma_api) { + for_each_sgtable_dma_sg(userptr->sgt, sg, si) { + (*ents)[si].addr =3D cpu_to_le64(sg_dma_address(sg)); + (*ents)[si].length =3D cpu_to_le32(sg_dma_len(sg)); + (*ents)[si].padding =3D 0; + } + } else { + for_each_sgtable_sg(userptr->sgt, sg, si) { + (*ents)[si].addr =3D cpu_to_le64(sg_phys(sg)); + (*ents)[si].length =3D cpu_to_le32(sg->length); + (*ents)[si].padding =3D 0; + } + } + + *nents =3D count; + return 0; +} + +static struct sg_table * +virtio_gpu_userptr_get_sg_table(struct drm_gem_object *obj) +{ + struct virtio_gpu_object *bo =3D gem_to_virtio_gpu_obj(obj); + struct virtio_gpu_object_userptr *userptr =3D to_virtio_gpu_userptr(bo); + int ret; + + mutex_lock(&userptr->lock); + if (!userptr->pages) { + ret =3D userptr->ops->get_pages(userptr); + if (ret) { + mutex_unlock(&userptr->lock); + return ERR_PTR(ret); + } + } + mutex_unlock(&userptr->lock); + + /* PRIME takes ownership of the returned table. */ + return drm_prime_pages_to_sg(obj->dev, userptr->pages, userptr->npages); +} + +static int +virtio_gpu_userptr_init(struct drm_device *dev, struct drm_file *file, + struct virtio_gpu_object_userptr *userptr, + struct virtio_gpu_object_params *params, + const struct virtio_gpu_object_userptr_ops *ops) +{ + struct drm_gem_object *obj; + int ret; + + userptr->start =3D params->userptr; + userptr->npages =3D params->size >> PAGE_SHIFT; + userptr->flags =3D params->blob_flags; + + mutex_init(&userptr->lock); + userptr->vgdev =3D dev->dev_private; + userptr->file =3D file; + userptr->ops =3D ops; + + /* + * Allocate the resource id before GEM init so a failure here can + * unwind with a plain kfree and does not need a special id=3D0 guard + * in the shared resource_id_put helper. + */ + ret =3D virtio_gpu_resource_id_get(userptr->vgdev, + &userptr->base.hw_res_handle); + if (ret) { + mutex_destroy(&userptr->lock); + return ret; + } + + obj =3D &userptr->base.base.base; + obj->funcs =3D &virtio_gpu_userptr_funcs; + + drm_gem_private_object_init(dev, obj, params->size); + INIT_LIST_HEAD(&userptr->base.restore_node); + + return 0; +} + +static const struct virtio_gpu_object_userptr_ops virtio_gpu_userptr_ops = =3D { + .get_pages =3D virtio_gpu_userptr_get_pages, + .put_pages =3D virtio_gpu_userptr_put_pages, +}; + +int virtio_gpu_userptr_create(struct virtio_gpu_device *vgdev, + struct drm_file *file, + struct virtio_gpu_object_params *params, + struct virtio_gpu_object **bo_ptr) +{ + struct virtio_gpu_object_userptr *userptr; + struct virtio_gpu_mem_entry *ents =3D NULL; + struct sg_table *sgt; + struct mm_struct *mm; + unsigned long lock_limit; + unsigned long start; + unsigned long end; + s64 new_pinned; + unsigned int nents; + int ret; + + *bo_ptr =3D NULL; + + if (!params->size || !IS_ALIGNED(params->size, PAGE_SIZE) || + params->userptr !=3D (unsigned long)params->userptr) + return -EINVAL; + + start =3D params->userptr; + if (!IS_ALIGNED(start, PAGE_SIZE) || + check_add_overflow(start, (unsigned long)params->size, &end)) + return -EINVAL; + + if (!can_do_mlock()) + return -EPERM; + + if (params->size >> PAGE_SHIFT > INT_MAX) + return -E2BIG; + + if (!access_ok((void __user *)start, params->size)) + return -EFAULT; + + userptr =3D kzalloc_obj(*userptr); + if (!userptr) + return -ENOMEM; + + ret =3D virtio_gpu_userptr_init(vgdev->ddev, file, userptr, params, + &virtio_gpu_userptr_ops); + if (ret) { + kfree(userptr); + return ret; + } + + mm =3D current->mm; + mmgrab(mm); + lock_limit =3D rlimit(RLIMIT_MEMLOCK) >> PAGE_SHIFT; + new_pinned =3D atomic64_add_return(userptr->npages, &mm->pinned_vm); + if (new_pinned < 0 || + (new_pinned > lock_limit && !capable(CAP_IPC_LOCK))) { + atomic64_sub(userptr->npages, &mm->pinned_vm); + mmdrop(mm); + ret =3D new_pinned < 0 ? -EOVERFLOW : -ENOMEM; + goto err_cleanup; + } + userptr->mm =3D mm; + + mutex_lock(&userptr->lock); + ret =3D userptr->ops->get_pages(userptr); + mutex_unlock(&userptr->lock); + if (ret) + goto err_cleanup; + + sgt =3D drm_prime_pages_to_sg(vgdev->ddev, userptr->pages, + userptr->npages); + if (IS_ERR(sgt)) { + ret =3D PTR_ERR(sgt); + goto err_cleanup; + } + + userptr->sgt =3D sgt; + + /* + * Match shmem blobs: only DMA-map when the virtio DMA API is in + * use. Mapping unconditionally can create SWIOTLB bounce buffers + * that get copied back over guest pages on unmap even though the + * host was given sg_phys() addresses. + */ + if (virtio_gpu_use_dma_api(vgdev->vdev)) { + enum dma_data_direction dir =3D + (userptr->flags & VIRTGPU_BLOB_FLAG_USERPTR_RDONLY) ? + DMA_TO_DEVICE : DMA_BIDIRECTIONAL; + + ret =3D dma_map_sgtable(drm_dev_dma_dev(vgdev->ddev), sgt, + dir, 0); + if (ret) + goto err_cleanup; + + userptr->dma_dir =3D dir; + userptr->dma_mapped =3D true; + } + + ret =3D virtio_gpu_userptr_get_entries(vgdev, userptr, &ents, &nents); + if (ret) + goto err_cleanup; + + virtio_gpu_cmd_resource_create_blob(vgdev, &userptr->base, params, ents, + nents); + + *bo_ptr =3D &userptr->base; + return 0; + +err_cleanup: + virtio_gpu_cleanup_object(&userptr->base); + return ret; +} --=20 2.34.1 From nobody Fri Sep 25 00:40:13 2026 Received: from PH7PR06CU001.outbound.protection.outlook.com (mail-westus3azon11010069.outbound.protection.outlook.com [52.101.201.69]) (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 0D6D83BA225 for ; Fri, 18 Sep 2026 02:12:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=52.101.201.69 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789697552; cv=fail; b=MhCp4DVM69WrFrl+oMbI1ZIXuCHqk3Ne3zUOebXUrtxVIRmOxAp7SdtCx9LerqVwPBMa0YdkBkrBrALGv1733HuouqPRSq+BJkGgdeo7lmTX+b/3Du1Q9tvPpAVfc74cXY5vGP9Q1fZuhhDlAtYNPAjbUsDfej/WyUlgoIdGiqo= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789697552; c=relaxed/simple; bh=j4eyziNsmm6F18gPfighsCUKQWzsOnPQuVa60y/l7ew=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=Pjgzs6/YwE/tULox6qHR1G7pgvBDcPge1z5IRXQKdGE0dUlp7ISl9BDUvx6qjt3VlkialkVqFGOCLr310aSn23cbfG+irgc9mFDM/qZ680Cv5fQHo+ehD3RvouR7t20tDlCjhM1WAIvMWt3Hl2nC/O46+PxlkA2cPbGw/FCZDJE= 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=PmDKg+D+; arc=fail smtp.client-ip=52.101.201.69 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="PmDKg+D+" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=N7bBAo/r8dYmpfBqblHN2Hk2ay7waMAHb5sB2GQoIOQH6PnpVqoyOTMBb9Hkf2bHp/Ens5bozTod9rOMkI4Zo6xxm54qXLBUbocJUrnPJRwNDf5VyNoDzflE8t/gc2ShW8toUZ3grra2Z7Ib2o5K6/BRfyfdl0Dkzcow8wn0RRs/tqGzpCSDxJBnVImrWSWoy0db//kpmkimp/W+bYlSZvJMFVv6dfmo2VnVUIGiChVZUKm/5bzbaTAYoyLvkXcaf/B/7oKGpPh6JlzHGsekQmwgZSpfGW19mkOgE2MmN4o3WcVsnrBkelJ/3ivNDOIqtR3AL0ZC1Fo+plpj/VOeHg== 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=rs2b6xSqLVuki8U0Nc22L1uOi9rbluxiCeg8FyCiT/k=; b=UTaRsShwI4tBWXTuJHVush/5aHCRQqAlQJ3YpQr985OzC5CvPhRSFyjrHk/AwFazxYInVGQb3uqGa2HU4glOVlJIHTc5ft2PVXtfksr7luEKrvUzFpgGhii2M9TMyEMTAPlUTrE99MWnofpdR3cQ3npa7meDQZWKooe4O1NB4qG/2O/VCg3QaFqHKcItpDbzwViN308vjv8X08nQMah+ZEgBG2wkTq/up9Ws1SjaHonR7oG/9UBMDwEFiIkjSNCd2y1TPRmIfi5Hm1TKF/uy3QiL1GwmnYIiaG42ufbIVov5o3R8ncaHfOBaCPItKXSy4IsG7S3OIY8ZO+uqrImfRA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=collabora.com smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none (0) 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=rs2b6xSqLVuki8U0Nc22L1uOi9rbluxiCeg8FyCiT/k=; b=PmDKg+D+mQYZAjshAyszcyxWjxHT2FI7fjn9f4N3jOX/4NAOwxZaz5KP1KGpRwkW9vxOZ4wpop2VMK0xHHc5mg4+gplxDGCQxQ5b8XjAhqNLX2IPjcRlzmX1e/mJURQW/Ggyx2tfLiu6cVO/MquSGfeSCnJJuV0nXqCDP3EX39A= Received: from PH7P221CA0034.NAMP221.PROD.OUTLOOK.COM (2603:10b6:510:33c::11) by LV3PR12MB9332.namprd12.prod.outlook.com (2603:10b6:408:20f::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.428.9; Fri, 18 Sep 2026 02:12:25 +0000 Received: from SJ1PEPF000023D7.namprd21.prod.outlook.com (2603:10b6:510:33c:cafe::2a) by PH7P221CA0034.outlook.office365.com (2603:10b6:510:33c::11) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.21.428.12 via Frontend Transport; Fri, 18 Sep 2026 02:12:25 +0000 X-MS-Exchange-Authentication-Results: mx.microsoft.com 1; spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=satlexmb07.amd.com; pr=C Received: from satlexmb07.amd.com (165.204.84.17) by SJ1PEPF000023D7.mail.protection.outlook.com (10.167.244.72) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.21.451.0 via Frontend Transport; Fri, 18 Sep 2026 02:12:25 +0000 Received: from honglei-remote.amd.com (10.180.168.240) by satlexmb07.amd.com (10.181.42.216) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.49; Thu, 17 Sep 2026 21:12:22 -0500 From: Honglei Huang To: Dmitry Osipenko , Akihiko Odaki , David Airlie , "Gerd Hoffmann" CC: Gurchetan Singh , Chia-I Wu , Ray Huang , , , , Honglei Huang Subject: [PATCH v7 4/4] drm/virtio: wire blob ioctl creation to userptr objects Date: Fri, 18 Sep 2026 10:11:54 +0800 Message-ID: <20260918021154.1432154-5-honghuan@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260918021154.1432154-1-honghuan@amd.com> References: <20260918021154.1432154-1-honghuan@amd.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: satlexmb07.amd.com (10.181.42.216) To satlexmb07.amd.com (10.181.42.216) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ1PEPF000023D7:EE_|LV3PR12MB9332:EE_ X-MS-Office365-Filtering-Correlation-Id: 37690f1d-70b8-430c-80b9-08df152a4850 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|36860700016|82310400026|1800799024|23010399003|10067099003|56012099006|11063799006|18002099003|22082099003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:satlexmb07.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(376014)(36860700016)(82310400026)(1800799024)(23010399003)(10067099003)(56012099006)(11063799006)(18002099003)(22082099003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: Da0QcXmJmULsYom66Yd/X7rJQsyPETG8mFspsw8uto1YYpv6WkvpNooo8XexARHYQw3towZKOtaT4vLcR/4t7dRa1VDPJ7EiDo/xWzRjf9VNO0tqDPiWWOuxMwAVG2Y2Gw1uR1KFPHC5p8sHkuOoiQjNP4GkhYOPvJq+OmrRnaNo1+i8bFXcHdcBF7KFffT0WiKyCrBa3+1DJQXNSCvucdoSKdW0RPIbM804VqmUU8zfdZ6fM1Cv49WkJlcatkQWnIZIlD4YuWb81r1ww7G+cAO8VzyFLitwxc7hnNK9TP018WypEVjJiTvS1k5hcJY0TEelDcC4p+MW1lBK41sXmKGtl5W7Ud0P49RbXfiewBTaMGiubtpr6zAnUzUqbA385Sl3Y+lac5dXVZtY5gdF0cmix2y8BkqZ9XxCtkXFHxs84TjSC2VFQ/Gdhm/bbRlN X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Sep 2026 02:12:25.4685 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 37690f1d-70b8-430c-80b9-08df152a4850 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: SJ1PEPF000023D7.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV3PR12MB9332 Content-Type: text/plain; charset="utf-8" Integrate userptr into the blob resource creation ioctl. - Include VIRTGPU_BLOB_FLAG_USE_USERPTR and VIRTGPU_BLOB_FLAG_USERPTR_RDONLY in VIRTGPU_BLOB_FLAG_USE_MASK - Require userptr if and only if USE_USERPTR is set - Reject USERPTR unless blob_mem is VIRTGPU_BLOB_MEM_GUEST - Pass the userspace address into the internal create params - Call virtio_gpu_userptr_create() for userptr blob requests Signed-off-by: Honglei Huang --- drivers/gpu/drm/virtio/virtgpu_ioctl.c | 25 +++++++++++++++++++++++-- 1 file changed, 23 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c b/drivers/gpu/drm/virti= o/virtgpu_ioctl.c index 3d8e4ccdb7..6d38483f5f 100644 --- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c +++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c @@ -36,7 +36,9 @@ =20 #define VIRTGPU_BLOB_FLAG_USE_MASK (VIRTGPU_BLOB_FLAG_USE_MAPPABLE | \ VIRTGPU_BLOB_FLAG_USE_SHAREABLE | \ - VIRTGPU_BLOB_FLAG_USE_CROSS_DEVICE) + VIRTGPU_BLOB_FLAG_USE_CROSS_DEVICE | \ + VIRTGPU_BLOB_FLAG_USE_USERPTR | \ + VIRTGPU_BLOB_FLAG_USERPTR_RDONLY) =20 /* Must be called with &virtio_gpu_fpriv.struct_mutex held. */ static void virtio_gpu_create_context_locked(struct virtio_gpu_device *vgd= ev, @@ -458,6 +460,17 @@ static int verify_blob(struct virtio_gpu_device *vgdev, return -EINVAL; } =20 + if (rc_blob->blob_flags & VIRTGPU_BLOB_FLAG_USE_USERPTR) { + if (!rc_blob->userptr) + return -EINVAL; + } else { + if (rc_blob->userptr) + return -EINVAL; + + if (rc_blob->blob_flags & VIRTGPU_BLOB_FLAG_USERPTR_RDONLY) + return -EINVAL; + } + switch (rc_blob->blob_mem) { case VIRTGPU_BLOB_MEM_GUEST: *guest_blob =3D true; @@ -472,6 +485,11 @@ static int verify_blob(struct virtio_gpu_device *vgdev, return -EINVAL; } =20 + /* Userptr is only defined for pure guest backing. */ + if ((rc_blob->blob_flags & VIRTGPU_BLOB_FLAG_USE_USERPTR) && + rc_blob->blob_mem !=3D VIRTGPU_BLOB_MEM_GUEST) + return -EINVAL; + if (*host3d_blob) { if (!vgdev->has_virgl_3d) return -EINVAL; @@ -495,6 +513,7 @@ static int verify_blob(struct virtio_gpu_device *vgdev, params->blob =3D true; params->blob_flags =3D rc_blob->blob_flags; params->blob_hints =3D rc_blob->blob_hints; + params->userptr =3D rc_blob->userptr; =20 if (vgdev->has_blob_alignment && !IS_ALIGNED(params->size, vgdev->blob_alignment)) @@ -538,8 +557,10 @@ static int virtio_gpu_resource_create_blob_ioctl(struc= t drm_device *dev, vfpriv->ctx_id, NULL, NULL); } =20 - if (guest_blob) + if (guest_blob && !params.userptr) ret =3D virtio_gpu_object_create(vgdev, ¶ms, &bo, NULL); + else if (guest_blob && params.userptr) + ret =3D virtio_gpu_userptr_create(vgdev, file, ¶ms, &bo); else if (!guest_blob && host3d_blob) ret =3D virtio_gpu_vram_create(vgdev, ¶ms, &bo); else --=20 2.34.1