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

From: Reza Arbab
Date: Thu Oct 06 2016 - 14:37:53 EST

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@xxxxxxxxxxxxxxxxxx>
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