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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?52wwgsVezR115qt9d33A1kKqqGE+LmyLq4nYlTmVqZNhv2BB6j256Hzo1NZQ?= =?us-ascii?Q?NKOAMnafoOqpJLbRMRHUiY3JILFVlm8e2Cno63JgTJUQgwx/GdcFSMaJzzZi?= =?us-ascii?Q?G1/v1UZHlpKBSU5PL6PmSGEhCPs8Fn4mRVOQEwLxzSj93W6+ss+vV4a3Tz2A?= =?us-ascii?Q?yhcAh5jPoSs16DNav0Hg0kGsSZkvOjOH6v2/l/ndVXtE+REh7OwODc+cDufU?= =?us-ascii?Q?EDBh8mNIHJgg/UtLZuViyt4QWJ8d4bk8aIFlL6s0E6d8kPBYXv15OkLN5iyB?= =?us-ascii?Q?q/vE/YGL17RWoHYAekD5v7qXyvKCOyvB+zL/2l6EeJOprXpXkZtmukPa8hFg?= =?us-ascii?Q?FD+ttmjbZBvFfUCfE8OKLN0LDYopWIAeEZki/IxEJpYmjjTS8SpfacDRSLxN?= =?us-ascii?Q?9IaUUTmpr+QPHOiBXQ1Y/tJ5lOcRNFmvxh0kGvuNhWLLBGGtaejtrw+6/Ilm?= =?us-ascii?Q?B+vwISMpHO61JkVE66Mj8EAeVBvsJCHokVVlko/boKKqJQomd9F5eo/Y6Jd9?= =?us-ascii?Q?PWPOXguhUceDDICM7Hedx74gyg9WDboGdPds3QQHGFnJ4klP4AdJ9c9eqmug?= =?us-ascii?Q?bt8wIyqcosxVXRsxEYQnSsDOKHeELygslhPRlu5LrytJm4TjFYgBUXrlVB1h?= =?us-ascii?Q?5WFl3UBqRS/DO4SLDzruohHedA0H0UuxmLFVpedSNIW16WTvzFx5+IZR1+lT?= =?us-ascii?Q?qTWYvmhUOAZhqWEGZbc7F5qm3zXmXZ2vSSvM5irO6X23YzzA22wAaSO3H9pv?= =?us-ascii?Q?NZolkUdVnhQJJIowGUtP5GeYJQxCaf6uJjCu9vTJMQI0Y0r2tgXs/yBOixYC?= =?us-ascii?Q?N0iw7Ji4Q9ZtzBMBHeS31MQ8C5m+YzGVI578sxuN7Lk09R7oEpW9jz6Y9Iyo?= =?us-ascii?Q?Z78pxeaObN9IXgSgriwzNmDRP1ffMaOZcLZh5AH3WFa/0aJPR4aeiDPFxELb?= =?us-ascii?Q?qxJq0fO6bDwsTOGNOGvF/kd00IsptRFLDbwZqPzii9KTGUycLHg8IkSfpngF?= =?us-ascii?Q?TmI+HIvdum2pQy8jLRC5iUSZ/xnGI7VTjC1eIrn/mVjpRIcSGqaUhcUJ9aLp?= =?us-ascii?Q?9rcScL9mJFb28DRUfETnijqgc5hrvBW78qQaULs/QgZCMESuBhzQUuJufadU?= =?us-ascii?Q?9Aw5dRUkwob8EolqvM69jNfEohB7JnXGEKFiZbpgCz66w1nzdPMIWFBeb1Y+?= =?us-ascii?Q?x9gdvI/EATpep/hz0gqTA6Zx3qJRDfb4xVm0Nv/x6WMxfzq3wULP8xglo0NC?= =?us-ascii?Q?pfabYB65fI9UyYSQjOIjsqd0q5hn7ETYQzzbOt4mKUyzuboM/cztrM1FcOCM?= =?us-ascii?Q?SvB69IL6zfQq6wYqhV+Gv0W752qG17tJANa3Qls+Xg0ppVq09OCUfDLq/TN6?= =?us-ascii?Q?Ai2KIXAXdPkMvYbKVcvk8//llFq67//W4MOPEkDEFbsVABqmYcnqXHy5VYzW?= =?us-ascii?Q?3bTSwfQgNqwlFyS5jQHPdJEgpP2oNjv5Se4ap3v8jVGzHYqIsvZ6nqZASYvJ?= =?us-ascii?Q?04Ea8/WY9wQD/CTkLb+AvCLgfT+OcXEJ9yQnifUVI7o33yFf4rEMhc7K8KG/?= =?us-ascii?Q?eEipWQ/w5LqhaROgN1sQzVKFVgaSTylAYUWO6wRUUXnihjqmdioX4heCE3t0?= =?us-ascii?Q?tJnklLnOQ9umdYElX4gTSeNlhQWg3m8gDJuO9D+hWDOZyJSbg5h0WMx5D/bv?= =?us-ascii?Q?etQsAPndZCB1xyysC0XRFbnkstb/ahZZLBrtwmJTSXqOWGdd?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: b80bd7d9-346a-470e-5405-08df1e258259 X-MS-Exchange-CrossTenant-AuthSource: CHBPR12MB731189.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 29 Sep 2026 12:30:56.0533 (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: kqfTf9SV+gUILxH+ohnLtyxQp7g8HZEFAc2KhUxC/pJ4kiXCfiGTe0xXkJxUhURv X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB8584 On Mon, Sep 28, 2026 at 10:55:24PM -0700, Jacob Pan wrote: > Also, we don't have a T=0 to T=1 transition, our intended external > attach can be transitioned from a blocked domain, not from a paging > domain to external. You kind of do, external is close to T=1.. > > I think you are going to have module dependency issues trying to get > > the mshv driver's info into the iommu driver, adding a "TSM" like > > driver would resolve that. ie mshv could just provide the viommu. > > > I introduced a similar registration interface in hv-common to solve the > module dep issue. Will look into if I can leverage the vIOMMU helper > here. That doesn't sound so nice.. If we have to have registrations it is better to have the viommu registration that Aneesh drafted than several schemes inside specific drivers.. Jason