Re: [PATCH v3 5/8] mm: HUGE_VMAP arch support cleanup

Hi Nicholas, I love your patch! Yet something to improve: [auto build test ERROR on hnaz-linux-mm/master] [also build test ERROR on arm64/for-next/core powerpc/next tip/x86/mm linus/master v5.8 next-20200807] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submit

[PATCH v3 5/8] mm: HUGE_VMAP arch support cleanup

This changes the awkward approach where architectures provide init functions to determine which levels they can provide large mappings for, to one where the arch is queried for each call. This removes code and indirection, and allows constant-folding of dead code for unsupported levels. This also