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Tue, 7 Jul 2026 10:21:42 -0700 Date: Tue, 7 Jul 2026 10:21:40 -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 2/8] iommu/arm-smmu-v3: Move pgsize out of arm_smmu_inv Message-ID: References: <0-v2-43074a57a53a+fb95-smmu_tlbi_jgg@nvidia.com> <2-v2-43074a57a53a+fb95-smmu_tlbi_jgg@nvidia.com> <20260707161506.GA226829@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20260707161506.GA226829@nvidia.com> X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: MWH0EPF000C618F:EE_|SA5PPF590085732:EE_ X-MS-Office365-Filtering-Correlation-Id: 4246ef4e-91b4-4d77-214a-08dedc4c4751 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|1800799024|36860700016|23010399003|82310400026|11063799006|4143699003|22082099003|18002099003|56012099006|6133799003; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: cfORRe3SnuZUGGJZ2G/JesyzO5H34seO0M99aUwblu/ugTU8hjBpCSaCyu/u8IdP/Hb5edwIhTZp9LliUaYwdA2JeEfmgRO0rcLQkRRoqoExovseobFYGZkrEQaJpGZfn92PBzkgmjYfNhEGRONZcNoLwb0FQS5u2sZvlbOWx8ISkgAhE0Up/xKKn3lGX+28ELLy6uYKbzW0hJGRNWWZaznxCUsTyGjVnxBh/gqWSxNUiJBaeG/bVYxLi7MM3APyudkODvQ92QSwPvAaDdpi+ZiHTP79y9zej8JJFMFsHgUnqSXKtGvDDIqE6whCh8xyoLdrPmomWZzyzKcpblziYRqLggEZj2qVVsXCS4bWMCk5Vidwb0IyZKQ4bzrW0azTYpeCx9/Bq6r82rIrzbJ3+deYvoqlZaivbHTaT3ykqdhhE3M1xPUJvDi0rk9QJzh/ X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Jul 2026 17:22:10.3819 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 4246ef4e-91b4-4d77-214a-08dedc4c4751 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: MWH0EPF000C618F.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA5PPF590085732 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260707_102221_149024_91ED3FA6 X-CRM114-Status: GOOD ( 11.90 ) 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 Tue, Jul 07, 2026 at 01:15:06PM -0300, Jason Gunthorpe wrote: > On Mon, Jul 06, 2026 at 08:57:22PM -0700, Nicolin Chen wrote: > > > @@ -734,7 +734,6 @@ struct arm_smmu_inv { > > > u8 nsize_opcode; > > > u32 id; /* ASID or VMID or SID */ > > > union { > > > - size_t pgsize; /* ARM_SMMU_FEAT_RANGE_INV */ > > > u32 ssid; /* INV_TYPE_ATS */ > > > }; > > > > So, union has only "ssid" now. Should we unwrap it? > > I thought we might need it with some of the other series? I was wondering about that too, but couldn't find in those series of mine (smmuv3_kdump, smmuv3_atc_timeout, smmuv3_share_domain). Nicolin