sh: memory hot-add for sparsemem users support.

This enables simple hotplug support for sparsemem users. Presently
this only permits memory being added in to node 0 on ZONE_NORMAL.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig
index c713d13fcca9..0c24abdd4ea1 100644
--- a/arch/sh/mm/Kconfig
+++ b/arch/sh/mm/Kconfig
@@ -331,6 +331,14 @@ config ARCH_POPULATES_NODE_MAP
 config ARCH_SELECT_MEMORY_MODEL
         def_bool y
 
+config ARCH_ENABLE_MEMORY_HOTPLUG
+        def_bool y
+        depends on SPARSEMEM
+
+config ARCH_MEMORY_PROBE
+        def_bool y
+        depends on MEMORY_HOTPLUG
+
 choice
         prompt "Kernel page size"
         default PAGE_SIZE_4KB