On Wed, Oct 16, 2024 at 04:16:17PM -0400, Peter Xu wrote: > > Is there chance that when !CoCo will be supported, then external modules > (e.g. VFIO) can reuse the old user mappings, just like before gmemfd? > > To support CoCo, I understand gmem+offset is required all over the places. > However in a non-CoCo context, I wonder whether the other modules are > required to stick with gmem+offset, or they can reuse the old VA ways, > because how it works can fundamentally be the same as before, except that > the folios now will be managed by gmemfd. My intention with iommufd was to see fd + offest as the "new" way to refer to all guest memory and discourage people from using VMA handles. Jason
