Btw, what could work is to spec only a *version* field somewhere in the HW or FW which says which version the RMP header has. Then, OS would check that field and if it doesn't support that certain version, it'll bail. I'd need to talk to folks first, though, what the whole story is behind not spec-ing the RMP format... -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette