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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?TE+uPD0GpyqsuTU30i1zTjFBSydaz5C96khRWQT5B21slnyJHAt2cA/Zlf6U?= =?us-ascii?Q?dvDt7oG6YjKYbp335vEiElF6nYOJp8i2ajhK0IIR5etsRjemBAtq9OnquVBd?= =?us-ascii?Q?H8PFHCWcjQhZ+nBVKe6N+bNdJCu1xOfccM5bJddeGYUygm8usSJh1YAVDp9m?= =?us-ascii?Q?O3/QOHSKhlmdtHCgpCX4IAYOrp2+qZBi9o2W8Zv1ANNqg4WwjQz4hxDmDLLB?= =?us-ascii?Q?jdCY9Ccis72otTENHv8yMhn7vo1ySpN5Or/TKHb4S+km2QMz8GUtePYQfD5T?= =?us-ascii?Q?b4Do/fXC1sNcHpI8mxglvAXhqIwwfKoTkQ5V2CEMdqsQw0H6d5gANkcMPDWC?= =?us-ascii?Q?fMsbkMsY+uwocMuhi/xk8Q8cjdVcmc8S8Czws89yxZNRGjXDNcDXJO6Zqejk?= =?us-ascii?Q?FD/2TBXUNgYxqfP8/sDhPdC4gmTyZOfXL/jD+Og2S+5J6tfgfW9Ia/32stKT?= =?us-ascii?Q?GH1lV4xn5G4gTdEtttvRAf/rpfLfUYfs66CoQ7j0r/8LpDHEuhf1RcKDO5Se?= =?us-ascii?Q?UTJJSvRWddMmhkh8ZwaEfyZcwjEaD7gkzGTLMJqzBQ3T8+HQHCgA/9nkV36P?= =?us-ascii?Q?kiBBouges2ehuvJ6mTj0pQSkKFvnuL0VuSN2k3dae/s/bhw43vsEfb/TU9q9?= =?us-ascii?Q?DfX2OVbUJvydK4oz53yuDvOQBg1zRv8eR54EF6n/r4YAjX88CpAxCjtromFk?= =?us-ascii?Q?THLQcCLvFenyCWzZIaUTHeCi+SeVlyQickJLZuZ38Eg+BqZA2ajSoTwcBJnG?= =?us-ascii?Q?4aoIMWhVfIBx6H93c/ZdL4Sx2v4YOBx1Nte9FMvWY93GTUQtKuMKV9wKuGAI?= =?us-ascii?Q?hoxDNYhDic8A56vIW+bXu5/QCThiJ/KkppODxbDLy4zP0uP/Bh0nol2ER6Xy?= =?us-ascii?Q?Xrrnrpa079K0xlQViTmrkEj4n7AU57NGEO9sqSiAx3ZLQ+sSWarU2zeF4YTm?= =?us-ascii?Q?RyP5/aNBbHkeuQJluIy0NhWBf910ru4utyvnyoKkquDEgoF229H0JXrZUu65?= =?us-ascii?Q?3BAf5rsl2GH9yXy+PCR8Ftbn5kHlTp1ZTdK/pIsgGGn0AsbNVrwg7t5cuzLl?= =?us-ascii?Q?YC9sDdi/kcDryABgo7xBUHKpxQV83pAxgQ06f3wWug/YRkE2hFA9DHGxmBAn?= =?us-ascii?Q?n9y5RrZiwakKE9BebZc4ZxtkZ5f+BXjIhhdrfjtmJyvBeHcIHpNlNy4zwybw?= =?us-ascii?Q?iuFOqvXuY40sn3lavivbKEr7aGQMgv9Qwt+SjRGzi8q6ly5Y7O8VBTrZ8Oq2?= =?us-ascii?Q?QmrDnPT6qWA6gAk0CZ+8bSVA5HVHBfqUpJAu9AhQJbA4BjXxhrxldG16c9In?= =?us-ascii?Q?OhzhnTJ9Nsv+pL1g6azjcO8XzHiGOTx2tGlEC77KBehJkgzAgnVKCygw8gQs?= =?us-ascii?Q?kHtquxxmG6YyXgexRZktG8RjE+UiNwUGQC+JbFOJH84zR9ckQHsDrfUjThHP?= =?us-ascii?Q?jMFSfWU1zDhLI+ZVP/NdeBXwhKbuorzt9V5BIFLVrHiHw2zfLm1va7ITqVSy?= =?us-ascii?Q?4AYRGCif4qUWmSV64C7anqcS2bPcfnUw7tWfSkcRATBrOsPoaHec3IY/b0u/?= =?us-ascii?Q?+ZzxebfUFVBNDRVPd5YJcVcydEIAmbNwS5La0ldj?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 3a8c66ae-0630-45ce-1ac0-08db9f54fc56 X-MS-Exchange-CrossTenant-AuthSource: LV2PR12MB5869.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 17 Aug 2023 19:05:56.4021 (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: +2CWbPtzK8gnET3wVsvfaVpHIuYMF1NRc4P/XbtN2Ue6GDNw1dle/4moT1UOcA15 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR12MB6533 On Fri, Aug 18, 2023 at 02:16:23AM +0800, Michael Shavit wrote: > diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h > index 83d2790b701e7..a9202d2045537 100644 > --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h > +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h > @@ -690,12 +690,20 @@ struct arm_smmu_stream { > struct rb_node node; > }; > > +/* List of smmu devices that a domain is installed to */ > +struct arm_smmu_installed_smmu { > + struct list_head list; 'installed_smmus_item' > + /* List of masters that the domain is attached to*/ > + struct list_head devices; > + struct arm_smmu_device *smmu; > +}; Ah, if you have this struct you could just put u32 cache_tag; // ASID or VMID depending on domain type And make both allocators local to the instance. AFAIK the only specific thing that needs a global ASID is the SVA BTM stuff and it already has code to handle collisions, it can just run that code per-instance. > /* SMMU private data for each master */ > struct arm_smmu_master { > struct arm_smmu_device *smmu; > struct device *dev; > struct arm_smmu_domain *domain; > - struct list_head domain_head; > + struct list_head list; What is list for now? 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, Aug 18, 2023 at 02:16:23AM +0800, Michael Shavit wrote: > diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h > index 83d2790b701e7..a9202d2045537 100644 > --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h > +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h > @@ -690,12 +690,20 @@ struct arm_smmu_stream { > struct rb_node node; > }; > > +/* List of smmu devices that a domain is installed to */ > +struct arm_smmu_installed_smmu { > + struct list_head list; 'installed_smmus_item' > + /* List of masters that the domain is attached to*/ > + struct list_head devices; > + struct arm_smmu_device *smmu; > +}; Ah, if you have this struct you could just put u32 cache_tag; // ASID or VMID depending on domain type And make both allocators local to the instance. AFAIK the only specific thing that needs a global ASID is the SVA BTM stuff and it already has code to handle collisions, it can just run that code per-instance. > /* SMMU private data for each master */ > struct arm_smmu_master { > struct arm_smmu_device *smmu; > struct device *dev; > struct arm_smmu_domain *domain; > - struct list_head domain_head; > + struct list_head list; What is list for now? Jason _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel