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Mon, 1 Jun 2026 23:03:43 -0700 Date: Mon, 1 Jun 2026 23:03:41 -0700 From: Nicolin Chen To: Pranjal Shrivastava CC: , Will Deacon , Joerg Roedel , Robin Murphy , Jason Gunthorpe , Mostafa Saleh , Daniel Mentz , Ashish Mhetre , Subject: Re: [PATCH v8 00/10] iommu/arm-smmu-v3: Implement Runtime/System Sleep ops Message-ID: References: <20260601215909.3958732-1-praan@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20260601215909.3958732-1-praan@google.com> X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ1PEPF000026C8:EE_|MN2PR12MB4424:EE_ X-MS-Office365-Filtering-Correlation-Id: e7798af5-8b04-462d-b614-08dec06cbc21 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|376014|36860700016|82310400026|6133799003|18002099003|22082099003|3023799007|11063799006|56012099006|13003099007; X-Microsoft-Antispam-Message-Info: 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 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)(376014)(36860700016)(82310400026)(6133799003)(18002099003)(22082099003)(3023799007)(11063799006)(56012099006)(13003099007);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: F34nU4zEmkacgWr/YPV5Q8WmTslrS9G+JeyWzic9zHlSGozf71eDM1WWP3j95rVl3p8W1CdOCiqk3DgXdqi6RRLlInfKUP+14w5OOghl+EiEu3R5TvpXCpo3Y0s0YTsL/UGMbngO5v8sTmTYvUK/VRmUTnadWeumGPWNbvtSEG7miwZFUV4mQsFLpwnx6LpHmuGOQUnBW+PhAPO+sms9I/sL9lhxn43re051Jq15ZzAZWlMC8lf5fo3qTsjptOcO9hEQwh+CVWLE7Dn4LxC+aIdF2BW7mwo4g6WRq0P7rfidgKQX38B1LOrXSBQUVroSwjT/KTIYRuyqQ+0IZjiwncDpLFjiQHQJm976+QX031Qjsf0/TjWXqP+FqE/gNvFPLVTLMYwuXCmUbzFbmyIKtOH/vRNB/A3k8Xm3wh9Zks209xgrb+Jk5L7+IZXBWFdk X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Jun 2026 06:03:57.8168 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: e7798af5-8b04-462d-b614-08dec06cbc21 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: SJ1PEPF000026C8.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB4424 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260601_230407_028743_6D6DF00B X-CRM114-Status: GOOD ( 10.01 ) 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, Jun 01, 2026 at 09:58:57PM +0000, Pranjal Shrivastava wrote: > [v8] > - Centralized elision logic: dropped redundant checks from invalidation > call-sites; elision is now authoritative within the CMDQ layer. > - Renamed elision helper to arm_smmu_cmdq_can_elide() and preserved it > only for diagnostic/safety paths (ATC, GERROR, Page Response). > - Consolidated implementation-specific gating and draining into a > unified quiesce_and_drain_queues callback. > - Updated tegra241-cmdqv to gate virtual queues before draining, > addressing non-deterministic timeouts from guest-side submissions. > - Re-ordered probe sequence to enable pm_runtime only at the end, > aligning with SMMUv2 and simplifying error paths. > - Refactored KUnit tests for better, addressed Nicolin's comments & added > a multi-threaded kthread race test. > - Refactored RPM helpers to use early-return patterns for improved clarity. > - Collected R-bs from Nicolin. FWIW, v8 is still missing a base-commit and Sashiko fails to review: https://sashiko.dev/#/patchset/20260601215909.3958732-1-praan%40google.com Please make sure v9 patches are formatted with "--base=" and a public commit. Nicolin