for_each_physmem_usable_range
for_each_physmem_usable_range(i, &start, &end) {
for_each_physmem_usable_range(i, &start, &end) {
for_each_physmem_usable_range(i, &start, &end) {
for_each_physmem_usable_range(i, &start, &end) {
for_each_physmem_usable_range(i, &start, &end)