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Wysocki" , Shameerali Kolothum Thodi , Mostafa Saleh Subject: Re: [PATCH v4 00/12] Initial support for SMMUv3 nested translation Message-ID: <20241105170333.GL458827@nvidia.com> References: <0-v4-9e99b76f3518+3a8-smmuv3_nesting_jgg@nvidia.com> <20241101121849.GD8518@willie-the-truck> <20241101132503.GU10193@nvidia.com> <20241105164829.GA12923@willie-the-truck> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20241105164829.GA12923@willie-the-truck> X-ClientProxiedBy: BN9PR03CA0842.namprd03.prod.outlook.com (2603:10b6:408:13d::7) To CH3PR12MB8659.namprd12.prod.outlook.com (2603:10b6:610:17c::13) Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH3PR12MB8659:EE_|PH0PR12MB7080:EE_ X-MS-Office365-Filtering-Correlation-Id: e1326d90-b04f-49a0-2a77-08dcfdbbc90b X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|366016|1800799024; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?MSldHey3iTbruUzW9Wvl5SEyuBZ9tlTzVOy/oVOKv79TC7FgoytuxBEA3IRN?= =?us-ascii?Q?5Pe3rt6l8D4H/0U5TWhXMOicei5G3vDqhXi3FudVs+Uvm7oitys70YXTVclM?= =?us-ascii?Q?msFhVxcn0O7w+3u2mqplmSAen6kuKqegOVFo6pQLeYjKQaDB5XFAJi2R7hRe?= =?us-ascii?Q?XZIqrYadATTMsmFWtGTdj3hm5CdhDad3D6zWQQZts+4z/LqTYFUHE5CM8ArM?= =?us-ascii?Q?9URAB23VrjMF8t4dcs8Sn+J8X9Soms/8Ps34f1+7rBN17SCEGcgL0SJT1RxV?= =?us-ascii?Q?Cf33fLbIEoqZ8y7TN8kNF2tnz5Ye4FupBex2t/BsikjSF06OBXhRqt2CJ5lu?= =?us-ascii?Q?rco0rIJCoqZkGrTkDAh8NO3TZbo+77OVPlr+TkQdYnLdl/7WYCGmn0/cHILh?= =?us-ascii?Q?xHW2B5VngYBJmJwjrqwM5SzUro2xiGzbA1LOyrACAWzd2QqJTffypq+aVPNe?= =?us-ascii?Q?OOpiZVSnuQ1QKsf3hSwx2u4bsU088AjAb2lickargsPo5Q64MrHc8QmiP9kZ?= =?us-ascii?Q?KKm0jlIKQOAvnL4S5GhH0+HpbfVSrO/9sD7gOeZnhLEC9lGf+YNLpaSqOeGP?= =?us-ascii?Q?gzv/+ClX2nfYUtXugSwnhUHWIZ9URdfJguvGcYq57HztxfwV/Gga0Go4Q9dl?= =?us-ascii?Q?BUQ1OHq6/BAkiPL8FtPoN7Ne4C3TWUgSqTyjo3Kc0DAc0VvOW3/Qt9OH+OBZ?= =?us-ascii?Q?Vmirv83MeXKTm3wFs4w+9MhVczB6KxRpGjcerfw/4/gD0aJ81L3CN7d6rVGN?= =?us-ascii?Q?FJDYIemxa/RzF31DMh9ZpvOXZtGjU9GhZL/BmhpfbENZs5u7PsNz3JYyz3fE?= =?us-ascii?Q?VnA1O4vdSMqWcR34Nezor2M4aCXrMn/TzWKrgufIu3QuKEMdaQN9tZUGgmqY?= =?us-ascii?Q?RHMl605D80PXxxZ5KzWQuZMQgX5dFrqCjy+qoZyNolttN4WwxgCz+NvAZ942?= =?us-ascii?Q?lTRz557HfXGX7NTYgNGaRLyBY/lAAWxP3/x1v+eQgfISzF8Lrlv5DH34alFd?= =?us-ascii?Q?n0cqGIEynbFvwhb03O+VyMkt2s5l1LUrCjbsNmmovr9zcNpPDFrXWo+rUuj0?= =?us-ascii?Q?bX1aFJkipXR8ZVkSrfZte2mg9jN2rQl5FToxIteWrDmhE0M8usAk4gDMgZIq?= =?us-ascii?Q?vVzktKMhbXsD84hW37oQa/eH44nxzrMSjgTb43l3im5YfxM9C3ZonibrTXfe?= =?us-ascii?Q?ug9f+acuuyeRYL2iMRg28k67E2O8Z7zLXE5Q0Yb1HZhF5jmVguBUxPh55vFw?= =?us-ascii?Q?Kqc/TbbiSxkcwbkydSQaEpapTKXzNuB0e3gTSWsgfMaCQuRntQSa1SygY9J4?= =?us-ascii?Q?LtEqxFs4zkSWmwel7R5m4Bc9d3BIE4LAQEWU4hgkpiH/SHWVllm0HjVa++En?= =?us-ascii?Q?A8TJgsViW+VSbi4R/coUvYvsNx+QCrTAdZBM/sE7Igq30paO3O3NtD0gu5G+?= =?us-ascii?Q?3UxrNrXwvf+AXXHmpLwhWOwG6pR9WjVOAMrDSyyHJ8Tp5kePhg2r75tJerIp?= =?us-ascii?Q?WOtDYAA2vW6GgPIVCnwPkgTFmF+fXb3e7JqwUUerSCa+QgxX1/xaeuS71ado?= =?us-ascii?Q?bVxB/tjUay803clYIbCbi4eoHSv/MW9e7jHjseZI?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: e1326d90-b04f-49a0-2a77-08dcfdbbc90b X-MS-Exchange-CrossTenant-AuthSource: CH3PR12MB8659.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Nov 2024 17:03:35.5215 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: rOMnHDVWgFeMojo0ynLAShJMJ++v7LgQn3tpvEiAO6/J8Hm1bzrZqKRXS8UE/1Vh X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH0PR12MB7080 On Tue, Nov 05, 2024 at 04:48:29PM +0000, Will Deacon wrote: > Hi Jason, > > On Fri, Nov 01, 2024 at 10:25:03AM -0300, Jason Gunthorpe wrote: > > On Fri, Nov 01, 2024 at 12:18:50PM +0000, Will Deacon wrote: > > > On Wed, Oct 30, 2024 at 09:20:44PM -0300, Jason Gunthorpe wrote: > > > > [This is now based on Nicolin's iommufd patches for vIOMMU and will need > > > > to go through the iommufd tree, please ack] > > > > > > Can't we separate out the SMMUv3 driver changes? They shouldn't depend on > > > Nicolin's work afaict. > > > > We can put everything before "iommu/arm-smmu-v3: Support > > IOMMU_VIOMMU_ALLOC" directly on a rc and share a branch with your tree. > > > > That patch and following all depend on Nicolin's work, as they rely on > > the VIOMMU due to how different ARM is from Intel. > > > > How about you take these patches: > > > > [PATCH v4 01/12] vfio: Remove VFIO_TYPE1_NESTING_IOMMU > > [PATCH v4 02/12] ACPICA: IORT: Update for revision E.f > > [PATCH v4 03/12] ACPI/IORT: Support CANWBS memory access flag > > [PATCH v4 04/12] iommu/arm-smmu-v3: Report IOMMU_CAP_ENFORCE_CACHE_COHERENCY for CANWBS > > [PATCH v4 05/12] iommu/arm-smmu-v3: Support IOMMU_GET_HW_INFO via struct arm_smmu_hw_info > > [PATCH v4 06/12] iommu/arm-smmu-v3: Implement IOMMU_HWPT_ALLOC_NEST_PARENT > > [PATCH v4 07/12] iommu/arm-smmu-v3: Expose the arm_smmu_attach interface > > > > Onto a branch. > > I've pushed these onto a new branch in the IOMMU tree: > > iommufd/arm-smmuv3-nested > > However, please can you give it a day or two to get some exposure in > -next before you merge that into iommufd? I'll ping back here later in > the week. Thanks, I will hope to put the other parts together on Friday then so it can also get its time in -next, as we are running out of days before the merge window 0-day is still complaining about some kconfig in Nicolin's patches so we need to settle that anyhow. Jason