INTR_ROOT_COUNT
static struct intr_irq_root intr_irq_roots[INTR_ROOT_COUNT];
for (rootnum = 0; rootnum < INTR_ROOT_COUNT; rootnum++) {
KASSERT(rootnum < INTR_ROOT_COUNT,
KASSERT(rootnum < INTR_ROOT_COUNT,
KASSERT(rootnum < INTR_ROOT_COUNT,