Address range mirroring system by programming basic input output system (bios) to identify address range and memory size configured for nodes

An Information Handling System (IHS), comprising:

• a Basic Input/Output (BIOS) processing system;
• and
• a BIOS memory system that is coupled to the BIOS processing system and that includes instructions that, when executed by the BIOS processing system, cause the BIOS processing system to provide a BIOS engine that is configured to:
• identify an address range mirroring memory size that was received from an operating system provided by at least one of a plurality of processing subsystem/memory subsystem nodes that each include a respective processing subsystem coupled to a respective memory subsystem;
• identify an address range mirroring node usage identification that was received from the operating system and that identifies a subset of the plurality of processing subsystem/memory subsystem nodes for which to configure address range mirroring;
• and
• configure, in the respective memory subsystem in each of the subset of the plurality of processing subsystem/memory subsystem nodes identified by the address range mirroring node usage identification, address range mirroring according to the address range mirroring memory size.

A method for performing address range mirroring, comprising:

• identifying, by a Basic Input/Output System (BIOS), an address range mirroring memory size that was received from an operating system provided by at least one of a plurality of processing subsystem/memory subsystem nodes that each include a respective processing subsystem coupled to a respective memory subsystem;
• identifying, by the BIOS, an address range mirroring node usage identification that was received from the operating system and that identifies a subset of the plurality of processing subsystem/memory subsystem nodes for which to configure address range minoring;
• and
• configuring, by the BIOS in each of the subset of the plurality of processing subsystem/memory subsystem nodes identified by the address range mirroring node usage identification, address range minoring according to the address range mirroring memory size.