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Wed, 22 Jul 2026 12:02:59 -0700 Date: Wed, 22 Jul 2026 12:02:58 -0700 From: Nicolin Chen To: Ashish Mhetre CC: , , , , , , , , , , , , Jason Gunthorpe Subject: Re: [PATCH v8 2/3] iommu/arm-smmu-v3: Introduce CFGI/TLBI-repeat workaround infrastructure Message-ID: References: <20260722102033.1122277-1-amhetre@nvidia.com> <20260722102033.1122277-3-amhetre@nvidia.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: <20260722102033.1122277-3-amhetre@nvidia.com> X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ1PEPF000026C5:EE_|SN7PR12MB7204:EE_ X-MS-Office365-Filtering-Correlation-Id: 7f23fddd-d67c-4d7a-7140-08dee823ea18 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|7416014|1800799024|82310400026|23010399003|36860700016|22082099003|18002099003|11063799006|10067099003|56012099006|4143699003; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: J4Jp6cdtqM7XZx+htLaP5Juh2BvsN5SiNSbPa5/7JHRDGo8TNfaO+oNlHaheqKAx9EaWVpPt67Ro6F0srqR+85a+MdKh35LEttKWklu+Udjf+5IDvf4kEBjhdHZbm3jvCajD6vprBjKbd+UYjCf5zwqJQkGaUF4uYjUeGT8y9lCY6SvnmZw6y1tblmu43sijZOUlWUMP2uBpV2H9g07DmfYF3tyD1vdwnQiSCWFaS23rWRBYkXqVy9zBzmtGDM/20D+ZEsf+ubUmk1GhMDgLS8D1buTgjqX3cyQPibkr+ALRHq6Bp1cpfixlBmuG0Shfgfbj8RMqsqMrzudPCM5nkKFcRZhIzONges9AtoLjj9BCGVRMNhdmWrl3bryQFRR2Bj98uhFfmJEUX+gQWPqLVieksHzr0RgdOAPwtv9uRp3feqcLAXgbNz75iZewGYna X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 22 Jul 2026 19:03:28.1853 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 7f23fddd-d67c-4d7a-7140-08dee823ea18 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.161];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: SJ1PEPF000026C5.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN7PR12MB7204 On Wed, Jul 22, 2026 at 10:20:32AM +0000, Ashish Mhetre wrote: > diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h > index c909c9a88538..9508bf50d14c 100644 > --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h > +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h > @@ -1207,10 +1207,15 @@ void arm_smmu_attach_commit(struct arm_smmu_attach_state *state); > int arm_smmu_cmdq_issue_cmdlist(struct arm_smmu_device *smmu, > struct arm_smmu_cmdq *cmdq, > struct arm_smmu_cmd *cmds, int n, > bool sync); > +bool arm_smmu_erratum_cmd_needs_repeating(struct arm_smmu_cmd *cmd); Is this needed? Nicolin