[PATCH v4 5/5] mm: enable CONFIG_MOVABLE_NODE on non-x86 arches

[Reza Arbab]

To support movable memory nodes (CONFIG_MOVABLE_NODE), at least one of
the following must be true:

1. We're on x86. This arch has the capability to identify movable nodes
   at boot by parsing the ACPI SRAT, if the movable_node option is used.

2. Our config supports memory hotplug, which means that a movable node
   can be created by hotplugging all of its memory into ZONE_MOVABLE.

Fix the Kconfig definition of CONFIG_MOVABLE_NODE, which currently
recognizes (1), but not (2).

Signed-off-by: Reza Arbab <arbab at linux.vnet.ibm.com>
---
 mm/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/Kconfig b/mm/Kconfig
index be0ee11..5d0818f 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -153,7 +153,7 @@ config MOVABLE_NODE
 	bool "Enable to assign a node which has only movable memory"
 	depends on HAVE_MEMBLOCK
 	depends on NO_BOOTMEM
-	depends on X86_64
+	depends on X86_64 || MEMORY_HOTPLUG
 	depends on NUMA
 	default n
 	help
-- 
1.8.3.1