vmem_span_create
(void) vmem_span_create(vmp, vaddr, size, 0);
return (vmem_span_create(vmp, (void *)addr, endaddr - addr, 0));
vsp = vmem_span_create(vmp, vaddr, size, 0);
vbest = vmem_span_create(vmp, vaddr, asize, 1);
vbest = vmem_span_create(vmp, vaddr, asize, 1);
(void) vmem_span_create(vmp, vaddr, size, 0);