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+#config SGI_SN0_XXL
+#       bool "IP27 XXL"
+#       depends on SGI_IP27
+#         This options adds support for userspace processes upto 16TB size.
+#         Normally the limit is just .5TB.
+
+config SGI_SN0_N_MODE
+        bool "IP27 N-Mode"
+        depends on SGI_IP27
+        help
+          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 ARCH_DISCONTIGMEM_ENABLE
+        bool
+        default y if SGI_IP27
+        help
+          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.
+
+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 and
+          NUMA.  If you need to understand it, read the source code.
+
+config REPLICATE_KTEXT
+        bool "Kernel text replication support"
+        depends on SGI_IP27
+        help
+          Say Y here to enable replicating the kernel text across multiple
+          nodes in a NUMA cluster.  This trades memory for speed.
+
+config REPLICATE_EXHANDLERS
+        bool "Exception handler replication support"
+        depends on SGI_IP27
+        help
+          Say Y here to enable replicating the kernel exception handlers
+          across multiple nodes in a NUMA cluster. This trades memory for
+          speed.