ACPI_GICV5_IRS_MEM_SIZE
r = gic_request_region(irs->config_base_address, ACPI_GICV5_IRS_MEM_SIZE, "GICv5 IRS");
irs_base = ioremap(irs->config_base_address, ACPI_GICV5_IRS_MEM_SIZE);