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client-ip=165.204.84.17; helo=satlexmb08.amd.com; pr=C Received: from satlexmb08.amd.com (165.204.84.17) by SJ5PEPF000001F1.mail.protection.outlook.com (10.167.242.69) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9678.18 via Frontend Transport; Mon, 9 Mar 2026 14:05:43 +0000 Received: from BLRANKISONI.xilinx.com (10.180.168.240) by satlexmb08.amd.com (10.181.42.217) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.17; Mon, 9 Mar 2026 09:05:39 -0500 From: Ankit Soni To: CC: , , , , , Subject: [PATCH v3 0/2] Respect VASIZE for address limits Date: Mon, 9 Mar 2026 14:05:26 +0000 Message-ID: X-Mailer: git-send-email 2.43.0 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 satlexmb08.amd.com (10.181.42.217) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ5PEPF000001F1:EE_|PH7PR12MB7843:EE_ X-MS-Office365-Filtering-Correlation-Id: f5b5f377-0d75-4e32-f2d2-08de7de4f3f7 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700016|376014|1800799024|82310400026; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 5eHEjuC5ZtEoIe+Obt2K+FcmPEVHVMU78iUx7uF6eXsu7KU5HroylXXI0iMnWp5hoA9JMAt44EnRFVv1GxhaNRe9nPFdWHLEpWA3HC7CbQ2BtRcDcvribzA+mpLJWR0RUoA7No3MoEQ3U946yqL4GP5Iet++hDR7V7gn/t9XshC5+Fz7cepYvGjg6RpQ05h8vCpcBfrc1bP1CoubzEQsHz6xzpk+fPDh+RqrsseOdMhx9DAZ48Lge2z/q+IHPitOn0GeTbBWEZH01DrSrmpM6XH0XzgjIMaXDMTHvoS0Nc5e/lw0d0cezj8Ya4tCXdZ6TK8FwIMUMfud7G0dZGFQ9DoPk4pJ1h/0CH8u0Gxkbxi9fxNmawT34yFo+UX2o2UUFOqMSuJljefXdhdwA0bJTDn4LmG5vXqzVDKx2DtA3syiLkZzt1gSaY9NbRlupug5 X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Mar 2026 14:05:43.1279 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: f5b5f377-0d75-4e32-f2d2-08de7de4f3f7 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=[satlexmb08.amd.com] X-MS-Exchange-CrossTenant-AuthSource: SJ5PEPF000001F1.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB7843 The AMD IOMMU driver was only using EFR[HATS] to derive the VA size, ignoring the IVINFO[VASIZE] limit. This could create domains that exceed the bounds advertised by hypervisor. Patch 1 removes PT_FEAT_DYNAMIC_TOP from PT_FORCE_ENABLED_FEATURES to fix a spurious domain allocation failure when the VA size is small enough that dynamic top growth is unnecessary. Patch 2 makes the driver respect IVINFO[VASIZE] when determining the addressable VA range. Changes: v3: - Remove specific value checking for vasize. - Add patch for PT_FORCE_ENABLED_FEATURES. v2: - Mark ivinfo_vasize_bits() as __init. Ankit Soni (2): iommu/amd: Remove PT_FEAT_DYNAMIC_TOP from PT_FORCE_ENABLED_FEATURES iommu/amd: Adhere to IVINFO[VASIZE] for address limits drivers/iommu/amd/amd_iommu.h | 2 +- drivers/iommu/amd/amd_iommu_types.h | 1 + drivers/iommu/amd/init.c | 13 +++++++++---- drivers/iommu/amd/iommu.c | 3 +-- drivers/iommu/generic_pt/fmt/iommu_amdv1.c | 2 +- 5 files changed, 13 insertions(+), 8 deletions(-) -- 2.43.0