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Tue, 30 Jun 2026 12:27:34 -0700 Date: Tue, 30 Jun 2026 12:27:32 -0700 From: Nicolin Chen To: Mostafa Saleh CC: , , , , , , , , , , , , , Subject: Re: [PATCH rc v7 0/7] iommu/arm-smmu-v3: Fix device crash on kdump kernel Message-ID: References: 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: X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000E9D4:EE_|MN0PR12MB5835:EE_ X-MS-Office365-Filtering-Correlation-Id: 57b90db3-cbf6-436f-5914-08ded6ddaa90 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|23010399003|376014|7416014|82310400026|36860700016|1800799024|18002099003|22082099003|11063799006|56012099006|4143699003|6133799003; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.118.232;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc7edge1.nvidia.com;CAT:NONE;SFS:(13230040)(23010399003)(376014)(7416014)(82310400026)(36860700016)(1800799024)(18002099003)(22082099003)(11063799006)(56012099006)(4143699003)(6133799003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: tSullCQglEA82Vh5ILEo9V1wv0g0VqOC9eAYIJaEiIfF63H+fXMxYsgzRN+zFy3DJdzLG8dbiqDtBHhM/9phJmMwhFod3IM7Z8YZ+J0NZhptK4MHN9M4GcfUXyPkkTNIr2LCJqKc0lBqcCIldPrwzhuhrH3UiNsNxcLgz4zufPnSVkMLrc8ROaDnpaxaDaZj93CCccbjH8sdqpksq3DfCHPG+rAA6CVb5Oe40DFI1WKfWSnr9EVTdIfXk4qFJRAw/9Eg7sY1fFRK0M9rWSjRaL912yhLcUbkiebq/K7va0KuinKMmDRoM//64x/uTJdl4MSrfiAtqXGZ8SmbUNvMlFBvp/UCcluzq3MPT7Xt/vWox7QuAA5Feou7GoiA55RN6tAjZ46DhC+GdI4X8aOebAEyoIu/qrjo8wVuMMewCZ+QDg9MI7icw9JYcbd1dbKd X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Jun 2026 19:27:47.0077 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 57b90db3-cbf6-436f-5914-08ded6ddaa90 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: CY4PEPF0000E9D4.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN0PR12MB5835 (I think Jason has answered most of the questions here.) On Tue, Jun 30, 2026 at 01:17:30PM +0000, Mostafa Saleh wrote: > For example, patch 4 disables the EVTQ to avoid events as there might > be a lot, why are they not fatal also? FWIW, the PATCH-4 doesn't disable the EVTQ: EVTQ is disabled in kdump case prior to the series; PATCH-4 just makes sure it won't get enabled transiently. Nicolin