diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index c71ddc0c191a..967ecf92d6a7 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -538,6 +538,11 @@ config IRQ_ALL_CPUS
 
 source "arch/powerpc/platforms/pseries/Kconfig"
 
+config NUMA
+	bool "NUMA support"
+	depends on PPC64
+	default y if SMP && PPC_PSERIES
+
 config ARCH_SELECT_MEMORY_MODEL
 	def_bool y
 	depends on PPC64
@@ -554,10 +559,6 @@ config ARCH_DISCONTIGMEM_DEFAULT
 	def_bool y
 	depends on ARCH_DISCONTIGMEM_ENABLE
 
-config ARCH_FLATMEM_ENABLE
-	def_bool y
-	depends on PPC64
-
 config ARCH_SPARSEMEM_ENABLE
 	def_bool y
 	depends on ARCH_DISCONTIGMEM_ENABLE
@@ -581,10 +582,6 @@ config NODES_SPAN_OTHER_NODES
 	def_bool y
 	depends on NEED_MULTIPLE_NODES
 
-config NUMA
-	bool "NUMA support"
-	default y if DISCONTIGMEM || SPARSEMEM
-
 config SCHED_SMT
 	bool "SMT (Hyperthreading) scheduler support"
 	depends on PPC64 && SMP
diff --git a/arch/ppc64/Kconfig b/arch/ppc64/Kconfig
index b889277ab7de..42677cc96508 100644
--- a/arch/ppc64/Kconfig
+++ b/arch/ppc64/Kconfig
@@ -248,6 +248,10 @@ config HMT
 	  This option enables hardware multithreading on RS64 cpus.
 	  pSeries systems p620 and p660 have such a cpu type.
 
+config NUMA
+	bool "NUMA support"
+	default y if SMP && PPC_PSERIES
+
 config ARCH_SELECT_MEMORY_MODEL
 	def_bool y
 
@@ -263,9 +267,6 @@ config ARCH_DISCONTIGMEM_DEFAULT
 	def_bool y
 	depends on ARCH_DISCONTIGMEM_ENABLE
 
-config ARCH_FLATMEM_ENABLE
-	def_bool y
-
 config ARCH_SPARSEMEM_ENABLE
 	def_bool y
 	depends on ARCH_DISCONTIGMEM_ENABLE
@@ -288,10 +289,6 @@ config NODES_SPAN_OTHER_NODES
 	def_bool y
 	depends on NEED_MULTIPLE_NODES
 
-config NUMA
-	bool "NUMA support"
-	default y if DISCONTIGMEM || SPARSEMEM
-
 config SCHED_SMT
 	bool "SMT (Hyperthreading) scheduler support"
 	depends on SMP