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Thu, 6 Nov 2025 06:08:15 +0000 X-MS-Exchange-Authentication-Results: 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 CO1PEPF000066ED.mail.protection.outlook.com (10.167.249.10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9298.6 via Frontend Transport; Thu, 6 Nov 2025 06:08:15 +0000 Received: from fedora.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 15.2.2562.17; Wed, 5 Nov 2025 22:08:13 -0800 From: Zhu Lingshan To: , CC: , , Zhu Lingshan Subject: [PATCH V7 06/18] amdkfd: process svm ioctl only on the primary kfd process Date: Thu, 6 Nov 2025 14:07:27 +0800 Message-ID: <20251106060739.2281-7-lingshan.zhu@amd.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251106060739.2281-1-lingshan.zhu@amd.com> References: <20251106060739.2281-1-lingshan.zhu@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.180.168.240] 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: CO1PEPF000066ED:EE_|MW3PR12MB4410:EE_ X-MS-Office365-Filtering-Correlation-Id: f0c31ecd-f407-44c3-6e06-08de1cfadfb7 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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CTRY:US; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:satlexmb07.amd.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(13230040)(376014)(36860700013)(1800799024)(82310400026); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Nov 2025 06:08:15.2594 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: f0c31ecd-f407-44c3-6e06-08de1cfadfb7 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: CO1PEPF000066ED.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW3PR12MB4410 X-BeenThere: amd-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" svm ioctl should only be processed on the primary kfd process because only the lifecycle of the primary kfd process is tied to the user space applicaiton. Another reason is in virtualization the hypervisor owns the primary kfd process as a privileged one. Signed-off-by: Zhu Lingshan Reviewed-by: Felix Kuehling --- drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c index 158e75975557..58d90bebdff7 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c @@ -1718,6 +1718,12 @@ static int kfd_ioctl_svm(struct file *filep, struct kfd_process *p, void *data) struct kfd_ioctl_svm_args *args = data; int r = 0; + if (p->context_id != KFD_CONTEXT_ID_PRIMARY) { + pr_debug("SVM ioctl not supported on non-primary kfd process\n"); + + return -EOPNOTSUPP; + } + pr_debug("start 0x%llx size 0x%llx op 0x%x nattr 0x%x\n", args->start_addr, args->size, args->op, args->nattr); -- 2.51.0