HMEBLK_SPAN
ASSERT(get_hblk_span(hmeblkp) == HMEBLK_SPAN(size));
(hmeblkp)->hblk_span = HMEBLK_SPAN(ttesz)
pages_per_hblk = btop(HMEBLK_SPAN(TTE64K));
pages_per_hblk = btop(HMEBLK_SPAN(TTE8K));
(HMENT_HASHAVELEN * (HMEBLK_SPAN(TTE8K) >> MMU_PAGESHIFT));
hme_buckets = npages / (HMEBLK_SPAN(TTE8K) >> MMU_PAGESHIFT);