Nadia/Надя/नाडिया/娜迪亚/ ناديةmap_anon_folio_pte_pf() et al that I see from post-7.0 code I have to merge my rolling pgcl port with appear to be helpers for dealing with multiple superpage sizes as part of the mTHP that this is the first I've heard anything of. That's moderately hopeful. With mTHP in hand, just pgcl would bring Linux' superpaging to parity with Telix', with various amounts of uncertainty as to how well either one is achieving promotions esp. in sub- allocation unit contexts.