mm: enable CONFIG_MOVABLE_NODE on non-x86 arches

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

1. This config has the capability to identify movable nodes at boot.
   Right now, only x86 can do this.

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).

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Reza Arbab <[email protected]>
Reviewed-by: Aneesh Kumar K.V <[email protected]>
Acked-by: Balbir Singh <[email protected]>
Cc: "Aneesh Kumar K.V" <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Cc: Alistair Popple <[email protected]>
Cc: Aneesh Kumar K.V <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Bharata B Rao <[email protected]>
Cc: Frank Rowand <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: Nathan Fontenot <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Rob Herring <[email protected]>
Cc: Stewart Smith <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

diff --git a/mm/Kconfig b/mm/Kconfig
index 86e3e0e74d20e78d173c1fa6dc4096f81695634e..061b46b18029f35adcc23dc36d54dec43b1382f3 100644 (file)
--- 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