region_setup
acpi_adr_space_setup region_setup;
region_setup = handler_desc->address_space.setup;
if (!region_setup) {
status = region_setup(region_obj, ACPI_REGION_ACTIVATE,
acpi_adr_space_setup region_setup;
region_setup = handler_obj->address_space.setup;
region_setup(region_obj,
region_setup(self->iommu, self->iova_allocator, &self->memcpy_region, SZ_1G);
region_setup(self->iommu, self->iova_allocator, &driver->region, SZ_2M);