On Wed, Feb 12, 2025 at 09:47:23PM -0800, Jacob Pan wrote: > Hi Jason, > > On Wed, 12 Feb 2025 19:30:53 -0400 > Jason Gunthorpe <jgg@xxxxxxxxxx> wrote: > > > On Wed, Feb 12, 2025 at 11:22:35AM -0800, Jacob Pan wrote: > > > > > Do you foresee the implementation can leverage your generic iommu_pt > > > work? i.e. for building guest IO page tables. It will add a new > > > flavor (page table based in addition to map/unmap) to > > > viommu_domain_alloc_paging() i think. > > > > Yes I do, I think it should be no problem and it will bring the > > missing x86 formats that are currently not available in iopgtbl > > wrappers. > I guess the missing x86 formats are AMDv2 and VT-d S1? Those are the same thing :) > It would be great if you could help adding/accommodating such usage to > the generic iommu_pt. I think it will be a subset of features as > intended for iommufd. I.e. map/unmap operation. Yeah it should be no problem. hyperv handling the invalidation queue in its own way should not effect the logic that drives the page table. Jason
