PML5SHIFT
return (NUPDE + NUPDPE + NUPML4E + (va >> PML5SHIFT));
#define NBPML5 (1UL<<PML5SHIFT)/* bytes/page map lev5 table */
((unsigned long)(l5) << PML5SHIFT) | \
((unsigned long)(l5) << PML5SHIFT) | \
return ((va >> PML5SHIFT) & ((1ul << NPML5EPGSHIFT) - 1));