SEG_SIZE
#define SEG_MASK (SEG_SIZE-1)
align = SEG_SIZE;
(SEG_SIZE - \
UPAGES * PAGE_SIZE) % SEG_SIZE)) \
SEG_SIZE / 1024 / 1024);
pmap_inval_cpu(pmap, va, SEG_SIZE);
((size & SEG_MASK) == 0 || size > SEG_SIZE * 16)) {
align = SEG_SIZE;