immu_regs_setup
immu_regs_setup(&immu_list); /* subsequent code needs this first */
immu->immu_regs_setup = B_FALSE;
immu->immu_regs_setup = B_TRUE;
if (immu->immu_regs_setup == B_FALSE) {
boolean_t immu_regs_setup;
void immu_regs_setup(list_t *immu_list);