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Thu, 28 May 2026 11:15:01 -0700 Date: Thu, 28 May 2026 11:14:59 -0700 From: Nicolin Chen To: Pranjal Shrivastava CC: , Will Deacon , Joerg Roedel , Robin Murphy , Jason Gunthorpe , Mostafa Saleh , Daniel Mentz , Ashish Mhetre , Subject: Re: [PATCH v7 04/11] iommu/tegra241-cmdqv: Restore PROD and CONS after resume Message-ID: References: <20260527221407.1756491-1-praan@google.com> <20260527221407.1756491-5-praan@google.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: <20260527221407.1756491-5-praan@google.com> X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ5PEPF000001F0:EE_|CH3PR12MB8880:EE_ X-MS-Office365-Filtering-Correlation-Id: 543ade33-7ac2-4db6-4def-08debce51245 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700016|1800799024|376014|82310400026|22082099003|18002099003|11063799006|4143699003|3023799007|56012099006; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: ROiZXoNRSmxUu5l1C/RGW5ubOl4CB/UtRUtB4vogvG2ZClTjOA3D1ygMBJXQIswpvSyrdWmfkRKPVjViU2bKct9+3a+OCtdPawf1NhOrTANzP0U0vWIhduxbcfDr+ctlekGalNi/a8fgI53PRh//iYHIyWi6eJisUqvbAhFBIrwSU1xL5fi8xDViYPFTASz3Fr3JUTbkiPW2ZxSZjHFcUmBxSI5cfo4cR2Vx1xug4BOShrne+ySnR/mcdvIncmK4yK7kt4m8YcT/E9Vd/PfZnT7DqB4DYsHlTY2TWROoM8RNxOnuMifcOK9iqc38iJ8DSR2NNxZKa9SdnMAcw20ykKDpWz8YsK1EYNZ1CG2u7pANaWB2jkysKp2iuUL+9VA4wHGIgZQ7YmBR+rylBJ0GdajOtwWx7nnNSowIFHsdMP9uiGhzJyJX3Hv2P4k9+GnQ X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 May 2026 18:15:17.2797 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 543ade33-7ac2-4db6-4def-08debce51245 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: SJ5PEPF000001F0.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB8880 On Wed, May 27, 2026 at 10:14:00PM +0000, Pranjal Shrivastava wrote: > From: Ashish Mhetre > > PROD and CONS indices for vcmdqs are getting set to 0 after resume. > Because of this the vcmdq is not consuming commands after resume. > Fix this by restoring PROD and CONS indices after resume from > saved pointers. > > Signed-off-by: Ashish Mhetre > Signed-off-by: Pranjal Shrivastava Reviewed-by: Nicolin Chen