On Fri, Feb 21, 2025 at 03:39:45PM +0000, Robin Murphy wrote: > Yuck. Realistically we are going to have no more than two different > implementations of this; a fiddly callback interface seems overkill. All we > should need in the domain is a simple indicator of *which* MSI translation > scheme is in use (if it can't be squeezed into the domain type itself), then > iommu_dma_prepare_msi() can simply dispatch between iommu-dma and IOMMUFD > based on that, and then it's easy to solve all the other fragility issues > too. That would make module dependency problems, we have so far avoided having the core kernel hard depend on iommufd. Jason
