# This options adds support for userspace processes upto 16TB size.
# Normally the limit is just .5TB.
-choice
- prompt "Node addressing mode"
+config SGI_SN0_N_MODE
+ bool "IP27 N-Mode"
depends on SGI_IP27
- default SGI_SN_M_MODE
-
-config SGI_SN_M_MODE
- bool "IP27 M-Mode"
help
- 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.
+ The nodes of Origin 200, Origin 2000 and Onyx 2 systems can be
+ configured in either N-Modes which allows for more nodes or M-Mode
+ which allows for more memory. Your system is most probably
+ running in M-Mode, so you should say N here.
-config SGI_SN_N_MODE
- bool "IP27 N-Mode"
- depends on EXPERIMENTAL
+config ARCH_DISCONTIGMEM_ENABLE
+ bool
+ default y if SGI_IP27
help
- 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.
+ Say Y to upport efficient handling of discontiguous physical memory,
+ for architectures which are either NUMA (Non-Uniform Memory Access)
+ or have huge holes in the physical address space for other reasons.
+ See <file:Documentation/vm/numa> for more.
-endchoice
+config NUMA
+ bool "NUMA Support"
+ depends on SGI_IP27
+ help
+ Say Y to compile the kernel to support NUMA (Non-Uniform Memory
+ Access). This option is for configuring high-end multiprocessor
+ server machines. If in doubt, say N.
config MAPPED_KERNEL
bool "Mapped kernel support"
depends on SGI_IP27
help
Change the way a Linux kernel is loaded into memory on a MIPS64
- machine. This is required in order to support text replication on
+ machine. This is required in order to support text replication and
NUMA. If you need to understand it, read the source code.
config REPLICATE_KTEXT
bool "Kernel text replication support"
depends on SGI_IP27
- select MAPPED_KERNEL
help
Say Y here to enable replicating the kernel text across multiple
nodes in a NUMA cluster. This trades memory for speed.