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Tue, 7 Jul 2026 14:51:15 -0700 Date: Tue, 7 Jul 2026 14:51:14 -0700 From: Nicolin Chen To: Jason Gunthorpe CC: , "Joerg Roedel (AMD)" , Jean-Philippe Brucker , , Robin Murphy , Will Deacon , David Matlack , "Pasha Tatashin" , , "Pranjal Shrivastava" , Samiullah Khawaja , Mostafa Saleh Subject: Re: [PATCH v2 6/8] iommu/arm-smmu-v3: Populate the tlbi at the top of the call chain Message-ID: References: <0-v2-43074a57a53a+fb95-smmu_tlbi_jgg@nvidia.com> <6-v2-43074a57a53a+fb95-smmu_tlbi_jgg@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <6-v2-43074a57a53a+fb95-smmu_tlbi_jgg@nvidia.com> X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS1PEPF0001708F:EE_|DM4PR12MB6110:EE_ X-MS-Office365-Filtering-Correlation-Id: 802f3041-709d-4736-97d3-08dedc71e92c X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|1800799024|36860700016|23010399003|376014|7416014|22082099003|18002099003|56012099006|11063799006|4143699003; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: a3jEu2f7drt/ieQF4bGTS/OHzNLJD03vMH4CB4NraS2Bb3WCLAM4c+VgpInOWPfA4HGf3CEz0WjD+fm3bbREja4HIeRpQkpnRfs9p3afT8ryZcCDpo3AAz5ecsQivAyaAtKm0rmbL5JrCTcofOYL0b3gR5Ir6L41S2gylsoOl/GpMPE25NFMgOS8YeTeOgMVTPao2yiNY7dNHSpWjPs+B+RE5m/jfsmoxuyeBtSEJlF4GjTFgpNYjOp6I62zd3wmO68jRsiNfdOnJS+P0WLYKnIoXXVQo9LJAeWJ+n5XaVOKsf7hEfTxvKq+uG29vEwdeDe+Fvn3SB2wjw0J3epoPMKhCjcppDVcqLjunhFoFS5BqO7mDd48GstqsGDTq9//UTgz6gqtgNeCmsflp0M+YUa2FiJzkoZ1WCfGX5qe25ksn5xOlS9ZtkG3ZtYX38oC X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Jul 2026 21:51:33.2969 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 802f3041-709d-4736-97d3-08dedc71e92c X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.232];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DS1PEPF0001708F.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB6110 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260707_145143_186593_2693A5F1 X-CRM114-Status: GOOD ( 10.46 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Jul 06, 2026 at 01:26:43PM -0300, Jason Gunthorpe wrote: > Each of these has their own unique situation, populate the tlbi right > at the top and pass it into arm_smmu_domain_inv_range(). They will > diverge further when the iommupt invalidation scheme is introduced. > > Signed-off-by: Jason Gunthorpe Reviewed-by: Nicolin Chen > +void arm_smmu_domain_tlbi(struct arm_smmu_tlbi *tlbi) > { [...] > + if (!tlbi->single.use_full_inv) > + arm_smmu_tlbi_calc_single(tlbi); My comments might belong to an earlier patch: Could arm_smmu_tlbi_calc_single() be moved closer to the _range()? It only has a couple of small steps, so it shouldn't be too bad if running inside the rcu_read_lock? Nicolin