On Tue, Jun 24, 2025 at 11:36 AM Edgecombe, Rick P <rick.p.edgecombe@xxxxxxxxx> wrote: > ... > For leaving the option open to promote the GFNs in the future, a GHCI interface > or similar could be defined for the guest to say "I don't care about page size > anymore for this gfn". So it won't close it off forever. > I think it's in the host's interest to get the pages mapped at large page granularity whenever possible. Even if guest doesn't buy-in into the "future" GHCI interface, there should be some ABI between TDX module and host VMM to allow promotion probably as soon as all the ranges within a hugepage get accepted but are still mapped at 4K granularity.
