cpu_caddr2
pp_addr2 = CPU->cpu_caddr2;
pp_addr2 = CPU->cpu_caddr2;
cpup->cpu_caddr2 = addr;
hat_mempte_release(cpup->cpu_caddr2, cpup->cpu_caddr2pte);
vmem_free(heap_arena, cpup->cpu_caddr2, mmu_ptob(1));
cpup->cpu_caddr2 = 0;