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Thu, 13 Nov 2025 11:19:57 -0800 Date: Thu, 13 Nov 2025 11:19:56 -0800 From: Nicolin Chen To: Suravee Suthikulpanit CC: , , , , , , , , , , , , , , , , , , Subject: Re: [PATCH v5 07/14] iommu/amd: Always enable GCR3TRPMode when supported. Message-ID: References: <20251112182506.7165-1-suravee.suthikulpanit@amd.com> <20251112182506.7165-8-suravee.suthikulpanit@amd.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20251112182506.7165-8-suravee.suthikulpanit@amd.com> X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: MN1PEPF0000ECDB:EE_|SJ2PR12MB8011:EE_ X-MS-Office365-Filtering-Correlation-Id: 8b61652a-5cb8-435e-b4f5-08de22e9acd8 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|36860700013|376014|7416014|1800799024|7053199007; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?lW3P6rOopbaKC50FAldTfECIC00h/qcFwdWIS4VXN6VtPGszoLQZ6+jsWkix?= =?us-ascii?Q?urEl6TuC8Vr+j4O+7L5XUMUHInLAb1igg5SEC9He11RaQNyrjoaQvrguF8/k?= =?us-ascii?Q?WB0Ua8cPHFnVHyNMU0+1Bui7wkMAc1+P9IAr0NgbDwVw9tBZoLnGquICKtXx?= =?us-ascii?Q?Cxv2X+uveg0mKzVEF9NuacOqGmwHRpSa5BX/jMgcE9XAjnSJ0aGGj9q2/ZES?= =?us-ascii?Q?JFKZLaAmlx1S/GCDni1BqDFfoT9G3v/5+hGXXHJ9dQ2Iur5WxaA+BBbNOncU?= =?us-ascii?Q?BSE2YhHTzZRZ2F5QVfv/L4WVKREiwex6CyN1qwTxFbMTmefDCzWRQ17nW5Wq?= =?us-ascii?Q?7Ttp0miG+RlxsJPfMZGqnW+R0/UbiFrFvfrZJ127MHhsCwroUVatCsL2lKY/?= =?us-ascii?Q?HjZ5zexYtBuV8IevBGqX7HUbRRh1abtusYiL98X7Mwme62+yLDi/YdFMTxbe?= =?us-ascii?Q?zR0E6UV4AL6htpeGfg7Q1Cj+zPUYUyJym4z5feZcDk+cObsfC+y9so2Kb2vt?= =?us-ascii?Q?TeY/DgC1MoOogUBms4llW37yfELvGL6ep9PcSNmRRuul6xJWzDEVvqwcLb1P?= =?us-ascii?Q?owyxAL6p+NAblEyhmLEcJUzfxG63rv96oV5UuH60pMvdd5pEzxemcidKHIns?= =?us-ascii?Q?DuvyD1YHdpPUDzkI5LIMP2Pj43vhaaDAEN1aWV33xJSJVlGA9HyhPEJUfXUQ?= =?us-ascii?Q?2xX9NKmwhdGU5Aht8lY3S37KhsaXa9H1v+CvuZFFGJAbKBjYSagdMHMj1C63?= =?us-ascii?Q?lT/QDRTLt4vzwuheDkRsYKWy+QUwHFAkDA5v4jEDpFkWwnRRCLT4FM5CNpgN?= =?us-ascii?Q?tqSPqs2CLqXdmDwte6zZn7o1aBDDM9cC9VpoyPO0zrIQ5BruNFD9SIa7dNox?= =?us-ascii?Q?6kkDTA0gNg1pMVaG077NVliCD8awLe0Kl3NM1/M/Wr4I99InCi/JSLiJW41A?= =?us-ascii?Q?1ydvcqc+gV22FdCSFbOD685NVZvOZmJgfY7LQ+UsNf9fRzN0A9xMkMp8d7lj?= =?us-ascii?Q?pBxP1eVrwZT/r5S9CT179LdKvbmNXa2S7D+siDjs7XxFnBaxXkRFN2596OLV?= =?us-ascii?Q?dkohOaUePiygIVnjQ3eqa9E/rRO60fCkVbs0Zm5psw7Ect0F0YZTUjwIxg4J?= =?us-ascii?Q?OPUtjJKnUpt0h8ws8edrs0YEJGv8t/DYvDxkknM+ihKnUSG6+C8EgEZYaoE0?= =?us-ascii?Q?8cYiejD6Ea/zSanUnyZp4HHltxcr7UT8HxcOiN3B1C3yA+DHbR1SEJ30dIt/?= =?us-ascii?Q?FJ4GwWA/2ONgWrRC3hBvSVAjf+1OI7ZGkKH0zd1XmXczoeknfjs9y3MULy2S?= =?us-ascii?Q?IFDlEQniwh0EVBbZcbwmwwbQytrz+ITqUDJkiVcj+e93JVEhSmJ3u2jsVEnz?= =?us-ascii?Q?ZX4k8jmdUdL6V38LzPs42YlD1aTGHy8yUhs0Lcqd9WZhCfPEV1lZjdulIQYZ?= =?us-ascii?Q?Z9sozQ1sMhw1XizJfVi/FQp2Nav4vJUKJdIP9xqBzvAdX9m9BWSO315abw9y?= =?us-ascii?Q?YjDSny98ZJ4rED0H/51KMGpEbu07e7K5tBg3xQJFeQ1NU2/tVmiWn7qfw1Vj?= =?us-ascii?Q?RCiy93AexbfP782saAk=3D?= X-Forefront-Antispam-Report: CIP:216.228.117.160;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge1.nvidia.com;CAT:NONE;SFS:(13230040)(82310400026)(36860700013)(376014)(7416014)(1800799024)(7053199007);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Nov 2025 19:20:15.3988 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 8b61652a-5cb8-435e-b4f5-08de22e9acd8 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: MN1PEPF0000ECDB.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ2PR12MB8011 On Wed, Nov 12, 2025 at 06:24:59PM +0000, Suravee Suthikulpanit wrote: > The GCR3TRPMode feature allows the DTE[GCR3TRP] field to be configured > with GPA (instead of SPA). This simplifies the implementation, and is > a pre-requisite for nested translation support. > > Therefore, always enable this feature if available. > > Reviewed-by: Jason Gunthorpe > Signed-off-by: Suravee Suthikulpanit Reviewed-by: Nicolin Chen