[PATCH] sparc64: support sparsemem and !memory hotplug

Fix "undefined reference to `arch_add_memory'" on sparc64 allmodconfig.

sparc64 doesn't support memory hotplug.  But we want it to support
sparsemem.

Signed-off-by: Yasunori Goto <[email protected]>
Cc: "David S. Miller" <[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 66e65ab3942651e86f2fbbadcf914fd600e41600..e76c023eb0bb4696be89ffb8185dc1ff502c0ed9 100644 (file)
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -116,6 +116,7 @@ config SPARSEMEM_EXTREME
 config MEMORY_HOTPLUG
        bool "Allow for memory hot-add"
        depends on SPARSEMEM && HOTPLUG && !SOFTWARE_SUSPEND
+       depends on (IA64 || X86 || PPC64)
 
 comment "Memory hotplug is currently incompatible with Software Suspend"
        depends on SPARSEMEM && HOTPLUG && SOFTWARE_SUSPEND