cpu_caddr1
pp_addr1 = CPU->cpu_caddr1;
cpup->cpu_caddr1 = addr;
hat_mempte_release(cpup->cpu_caddr1, cpup->cpu_caddr1pte);
vmem_free(heap_arena, cpup->cpu_caddr1, mmu_ptob(1));
cpup->cpu_caddr1 = 0;