L2_BUCKET
(ptep = l2->l2_bucket[L2_BUCKET(l1idx)].l2b_kva) == NULL) {
l2b = &l2->l2_bucket[L2_BUCKET(l1idx)];
l2b = &l2->l2_bucket[L2_BUCKET(l1idx)];
(ptep = l2->l2_bucket[L2_BUCKET(l1idx)].l2b_kva) == NULL) {
l2b = &l2->l2_bucket[L2_BUCKET(l1idx)];
(l2b = &l2->l2_bucket[L2_BUCKET(l1idx)])->l2b_kva == NULL)
l2b = &l2->l2_bucket[L2_BUCKET(l1idx)];