MMU_PAGE_MASK
((unsigned long) (pa) & MMU_PAGE_MASK)
((unsigned long) (pa + MMU_PAGE_SIZE - 1) & MMU_PAGE_MASK)
mapflags = (pa & ~MMU_PAGE_MASK);
pa &= MMU_PAGE_MASK;
flags = (pa & ~MMU_PAGE_MASK);
pa &= MMU_PAGE_MASK;
mapflags = (pa & ~MMU_PAGE_MASK);
pte->attr.raw = MMU_DT_INVALID | MMU_DT_PAGE | (pa & MMU_PAGE_MASK);