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Wed, 22 Oct 2025 19:27:31 -0700 Date: Wed, 22 Oct 2025 19:27:29 -0700 From: Nicolin Chen To: Suravee Suthikulpanit CC: , , , , , , , , , , , , , , , , , , Subject: Re: [PATCH v4 10/16] iommu/amd: Add support for nest parent domain allocation Message-ID: References: <20251021014324.5837-1-suravee.suthikulpanit@amd.com> <20251021014324.5837-11-suravee.suthikulpanit@amd.com> Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20251021014324.5837-11-suravee.suthikulpanit@amd.com> X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN1PEPF00004689:EE_|DS0PR12MB9421:EE_ X-MS-Office365-Filtering-Correlation-Id: 8c5f558e-6520-45c4-4c5e-08de11dbc273 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|7416014|1800799024|82310400026|36860700013; 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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Oct 2025 02:27:48.9293 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 8c5f558e-6520-45c4-4c5e-08de11dbc273 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: BN1PEPF00004689.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR12MB9421 On Tue, Oct 21, 2025 at 01:43:18AM +0000, Suravee Suthikulpanit wrote: > diff --git a/drivers/iommu/amd/amd_iommu_types.h b/drivers/iommu/amd/amd_iommu_types.h > index 9226edd8af69..c34604cf1811 100644 > --- a/drivers/iommu/amd/amd_iommu_types.h > +++ b/drivers/iommu/amd/amd_iommu_types.h > @@ -107,6 +107,7 @@ > > > /* Extended Feature 2 Bits */ > +#define FEATURE_GCR3TRPMODE BIT_ULL(3) > #define FEATURE_SNPAVICSUP GENMASK_ULL(7, 5) > #define FEATURE_SNPAVICSUP_GAM(x) \ > (FIELD_GET(FEATURE_SNPAVICSUP, x) == 0x1) This now should be moved to the previous patch? Nicolin