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Mon, 17 Nov 2025 11:27:52 -0800 Received: from Asurada-Nvidia (10.127.8.11) by mail.nvidia.com (10.126.190.181) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.20 via Frontend Transport; Mon, 17 Nov 2025 11:27:51 -0800 Date: Mon, 17 Nov 2025 11:27:50 -0800 From: Nicolin Chen To: "Tian, Kevin" CC: "joro@8bytes.org" , "afael@kernel.org" , "bhelgaas@google.com" , "alex@shazbot.org" , "jgg@nvidia.com" , "will@kernel.org" , "robin.murphy@arm.com" , "lenb@kernel.org" , "baolu.lu@linux.intel.com" , "linux-arm-kernel@lists.infradead.org" , "iommu@lists.linux.dev" , "linux-kernel@vger.kernel.org" , "linux-acpi@vger.kernel.org" , "linux-pci@vger.kernel.org" , "kvm@vger.kernel.org" , "patches@lists.linux.dev" , "Jaroszynski, Piotr" , "Sethi, Vikram" , "helgaas@kernel.org" , "etzhao1900@gmail.com" Subject: Re: [PATCH v5 4/5] iommu: Introduce iommu_dev_reset_prepare() and iommu_dev_reset_done() Message-ID: References: <28af027371a981a2b4154633e12cdb1e5a11da4a.1762835355.git.nicolinc@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; 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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 17 Nov 2025 19:28:15.4841 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: f4381474-262e-47d8-efc5-08de260f74a0 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: CH3PEPF00000012.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS5PPF016FC81DF X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251117_112822_151536_B416E71F X-CRM114-Status: GOOD ( 12.36 ) 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, Nov 17, 2025 at 04:59:33AM +0000, Tian, Kevin wrote: > > From: Nicolin Chen > > Sent: Tuesday, November 11, 2025 1:13 PM > > > > + * > > + * This function attaches all RID/PASID of the device's to > > IOMMU_DOMAIN_BLOCKED > > + * allowing any blocked-domain-supporting IOMMU driver to pause > > translation and > > __iommu_group_alloc_blocking_domain() will allocate a paging > domain if a driver doesn't support blocked_domain itself. So in the > end this applies to all IOMMU drivers. > > I saw several other places mention IOMMU_DOMAIN_BLOCKED in this > series. Not very accurate. OK. I will replace that with "group->blocked_domain" Nicolin