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Tue, 7 Jul 2026 16:25:16 -0700 Date: Tue, 7 Jul 2026 16:25:14 -0700 From: Nicolin Chen To: Ashish Mhetre CC: , , , , , , , Subject: Re: [PATCH v4 2/3] iommu/arm-smmu-v3: Detect Tegra264 erratum Message-ID: References: <20260609073204.1760077-1-amhetre@nvidia.com> <20260609073204.1760077-3-amhetre@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20260609073204.1760077-3-amhetre@nvidia.com> X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS1PEPF0001709C:EE_|CH8PR12MB9768:EE_ X-MS-Office365-Filtering-Correlation-Id: 022f7aa6-937e-446f-01f1-08dedc7f0b2b X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|23010399003|82310400026|376014|36860700016|18002099003|22082099003|4143699003|56012099006|11063799006; X-Microsoft-Antispam-Message-Info: 6SCz2GcrtDYrFqs1W2WALGAi4sRgd2ZYHuamlsBixOH9atcE//jbtYvmgwJ6qZJkbE3mxUwcFj5KE+6Hq7n6LbgEg2O2+HI07Vf2TzlDAT/uYdZULXfM+k0QnRpN6J+bPirPMEiTxwMOB7zniAHtcF3+z9jZUJN1I6cAVhP20gqj8TuoPDzpQwLZ5eXStenU5LswLlg+XF6BQOOPn5oOP5oWAb+ykxA7PcclB5aC57fkgHsf3DgpdGzrlVza4srsAtitXcU7IwxsgNCoaf/rECHwD0mjArJCy4BrrPBtHNDuki1whQSRvygIwfDcsNuHUvnX2KcnaSf6SmQBtv8/dwYvk8PVv8EixpY+TbAAFflmUXW8vgK8opnB72m+9YfIJgTjxiGfifN0CZMaP2KAozJA515Nff2E/b3ebJdxZbE4Qzeach/bcpjSK6wqVFd77vMSjF3KyoBIqb24Exk6J8Z8nnpO3F/gFMhI158a4DFHkrFQr48qoLYx4rt6EpgsvR0iw1BjCengbKQFZ5RQVdTvVaq8pCOO+YWau8XvTjW47kNqsfLdyCCoCUvYcSXR+pldqFfoUIJZPeFNywIM4CpyqfBwIE0AwQ9kP7WWSozQd1igACUi3ouyQ8reRCsp3A7i1rRyBCU+ICi16hShlZzeekHEeqNcuvicgzNvTKXac9Hf5hMGKdub6p0jvWsWc+kSORPUdt7kbfcYfT30KQ== X-Forefront-Antispam-Report: CIP:216.228.117.161;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge2.nvidia.com;CAT:NONE;SFS:(13230040)(1800799024)(23010399003)(82310400026)(376014)(36860700016)(18002099003)(22082099003)(4143699003)(56012099006)(11063799006);DIR:OUT;SFP:1101; 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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, Jun 09, 2026 at 07:32:03AM +0000, Ashish Mhetre wrote: > +arm_smmu_erratum_cmd_needs_repeating(struct arm_smmu_device *smmu, > + struct arm_smmu_cmd *cmd) > +{ [...] > + if (!static_branch_unlikely(&arm_smmu_erratum_repeat_tlbi_cfgi_key)) > + return false; > + if (!(smmu->options & ARM_SMMU_OPT_REPEAT_TLBI_CFGI)) > + return false; Are they redundant? Nicolin