This option enables hardware multithreading on RS64 cpus.
pSeries systems p620 and p660 have such a cpu type.
-config DISCONTIGMEM
+config ARCH_DISCONTIGMEM_ENABLE
bool "Discontiguous Memory Support"
depends on SMP && PPC_PSERIES
+source "mm/Kconfig"
+
config NUMA
bool "NUMA support"
depends on DISCONTIGMEM