+config SGI_XP
+ tristate "Support communication between SGI SSIs"
+ depends on IA64_GENERIC || IA64_SGI_SN2
+ select IA64_UNCACHED_ALLOCATOR if IA64_GENERIC || IA64_SGI_SN2
+ select GENERIC_ALLOCATOR if IA64_GENERIC || IA64_SGI_SN2
+ ---help---
+ An SGI machine can be divided into multiple Single System
+ Images which act independently of each other and have
+ hardware based memory protection from the others. Enabling
+ this feature will allow for direct communication between SSIs
+ based on a network adapter and DMA messaging.
+