I don't think Linus is up to date on libgio-2.0 (and the GDBus implementation). It does in fact use a SLAB, based on early kernel versions with per-thread allo

I don't think Linus is up to date on libgio-2.0 (and the GDBus implementation). It does in fact use a SLAB, based on early kernel versions with per-thread allocation caching. As for avoiding utf8 validation, that would require being able to trust the sender/receiver. That, I believe, is a major bullet point of both memfd (sealing) and kdbus.