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Mon, 29 Jun 2026 22:36:20 -0700 Date: Mon, 29 Jun 2026 22:36:18 -0700 From: Nicolin Chen To: Pranjal Shrivastava CC: , , , , , , , , , , , , , Subject: Re: [PATCH rc v6 3/7] iommu/arm-smmu-v3: Do not enable EVTQ/PRIQ interrupts in kdump kernel Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN2PEPF000055E0:EE_|MW4PR12MB8609:EE_ X-MS-Office365-Filtering-Correlation-Id: 4bb97a01-5a92-4416-87fe-08ded6698dcd X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700016|23010399003|7416014|376014|82310400026|1800799024|22082099003|18002099003|11063799006|56012099006|6133799003|4143699003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.118.233;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc7edge2.nvidia.com;CAT:NONE;SFS:(13230040)(36860700016)(23010399003)(7416014)(376014)(82310400026)(1800799024)(22082099003)(18002099003)(11063799006)(56012099006)(6133799003)(4143699003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: fudLwo6CQK0CtD9UHo3VpJHMutRV838nMNpqgqMoZ9GFoTP04xUK9q236LJDUrykclxJ+3+XxYAJei6Zy1EdyjoY5+NC8njemi3vXC/0TmND6sbIRyic86SEyHxF82AXPZxsbM+0zRPqdTf4VgBP9CqZmPLZ27hJlBpQxiSLytJ7Hit1dJQdkSEpDaeLzHKSGmoU3dIxUQ6jcY5V9de06xP6IHQ3qMSHd762s1wsMJqx+KPZrlRA7grDUHpRT1S4aJ0Ke/aI4w2NIE+Rg+WxJPL5XHFEEIEn15u88b/j7EXpxntPfW+GWZdIwwTwB4ytNnsqRJHuRzqPAVoplOxvpw5G4Q6L+6AmHHlvkIl7uBVjrgZMRndVrZw3ge1eM91eTCkilLND63GiImtWxOoQNCC00du1JZFQvXNhR3G5GlVdF9ykg/y0fr6WT6IxPoQo X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Jun 2026 05:36:37.0379 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 4bb97a01-5a92-4416-87fe-08ded6698dcd X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.233];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN2PEPF000055E0.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW4PR12MB8609 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260629_223645_938080_99A8BD18 X-CRM114-Status: GOOD ( 10.18 ) 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 30, 2026 at 04:58:14AM +0000, Pranjal Shrivastava wrote: > is_kdump_kernel() ? 0 : IRQF_ONESHOT, note that devm_request_irq is just: > > static inline int __must_check > devm_request_irq(struct device *dev, unsigned int irq, irq_handler_t handler, > unsigned long irqflags, const char *devname, void *dev_id) > { > return devm_request_threaded_irq(dev, irq, handler, NULL, irqflags | IRQF_COND_ONESHOT, > devname, dev_id); > } > > Not a strong opinion though, just suggesting a way to remove the if. I've thought about that but kept the if-else on purpose: - Using two ternaries doesn't seem a common practice to me. - request_threaded_irq doesn't read as clean as request_irq for GERROR to use -- one could wonder why "threaded". Thanks Nicolin