From mboxrd@z Thu Jan 1 00:00:00 1970 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: 8bit Content-Type: text/plain 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 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/virtgpu_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_gpu_device *vgdev, cmd_p->hdr.ctx_id = cpu_to_le32(params->ctx_id); cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); cmd_p->blob_mem = cpu_to_le32(params->blob_mem); - cmd_p->blob_flags = cpu_to_le32(params->blob_flags); + /* Guest-only flags stay off the wire. */ + cmd_p->blob_flags = 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 = cpu_to_le64(params->blob_id); cmd_p->size = cpu_to_le64(params->size); cmd_p->nr_entries = 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_USERPTR. + * Must be 0 if VIRTGPU_BLOB_FLAG_USE_USERPTR is not set. + */ + __u64 userptr; }; #define VIRTGPU_CONTEXT_PARAM_CAPSET_ID 0x0001 -- 2.34.1