FIRST_16M
if (spa < FIRST_16M && epa <= FIRST_16M) {
} else if (spa < FIRST_16M && epa > FIRST_16M) {
uvm_page_physload(spa, FIRST_16M, spa, FIRST_16M,
uvm_page_physload(FIRST_16M, epa, FIRST_16M, epa,