arch/mips/sgi-ip27/Kconfig v5.13-rc1

SGI_SN_M_MODE

IP27 M-Mode

The nodes of Origin, Onyx, Fuel and Tezro systems can be configured
in either N-Modes which allows for more nodes or M-Mode which allows
for more memory.  Your hardware is almost certainly running in
M-Mode, so choose M-mode here.

SGI_SN_N_MODE

IP27 N-Mode

The nodes of Origin, Onyx, Fuel and Tezro systems can be configured
in either N-Modes which allows for more nodes or M-Mode which allows
for more memory.  Your hardware is almost certainly running in
M-Mode, so choose M-mode here.

MAPPED_KERNEL

Mapped kernel support

Change the way a Linux kernel is loaded into memory on a MIPS64
machine.  This is required in order to support text replication on
NUMA.  If you need to understand it, read the source code.

REPLICATE_KTEXT

Kernel text replication support

Say Y here to enable replicating the kernel text across multiple
nodes in a NUMA cluster.  This trades memory for speed.