mpbios4
Mp bios
Usage
mpbios0 at bios0
Overview
The mpbios driver extracts configuration information from the BIOS on multiprocessor systems that conform to the Intel MultiProcessor Specification. This information is used to attach application processors and APICs, and to assign interrupts to ISA, EISA and PCI devices.
On modern systems this information is provided by ACPI through the acpimadt(4) device. On such a system mpbios will not attach, even if the BIOS also contains the data structures specified by the Intel MP Specification.
The mpbios driver supports version 1.1 and 1.4 of the Intel MP Specification.