On Mon, Oct 27, 2025 at 01:44:30PM -0700, Jacob Pan wrote: > I have a separate question regarding noiommu devices. I’m currently > working on adding noiommu mode support for VFIO cdev under iommufd.
Oh how is that going? I was just thinking about that again.. After writing the generic pt self test it occured to me we now have enough infrastructure for iommufd to internally create its own iommu_domain with a AMDv1 page table for the noiommu devices. It would then be so easy to feed that through the existing machinery and have all the pinning/etc work. Then only an ioctl to read back the physical addresses from this special domain would be needed It actually sort of feels pretty easy.. Jason
