vmm_gpt_iter_next
bool vmm_gpt_iter_next(vmm_gpt_iter_t *, vmm_gpt_iter_entry_t *);
while (vmm_gpt_iter_next(&state, &entry)) {
while (vmm_gpt_iter_next(&iter, &entry)) {
while (vmm_gpt_iter_next(&iter, &entry)) {