[PATCH] memory hotadd fixes: enhance collision check

[linux-2.6-omap-h63xx.git] / mm / Kconfig

diff --git a/mm/Kconfig b/mm/Kconfig
index a9cb80ae6409df599cc3823a7a072a158c41112c..8f5b45615f7bf1b43c35253b8f28f1ef4871818e 100644 (file)
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -115,7 +115,8 @@ config SPARSEMEM_EXTREME
 # eventually, we can have this option just 'select SPARSEMEM'
 config MEMORY_HOTPLUG
        bool "Allow for memory hot-add"
-       depends on SPARSEMEM && HOTPLUG && !SOFTWARE_SUSPEND
+       depends on SPARSEMEM && HOTPLUG && !SOFTWARE_SUSPEND && ARCH_ENABLE_MEMORY_HOTPLUG
+       depends on (IA64 || X86 || PPC64)
 
 comment "Memory hotplug is currently incompatible with Software Suspend"
        depends on SPARSEMEM && HOTPLUG && SOFTWARE_SUSPEND
@@ -137,5 +138,17 @@ config SPLIT_PTLOCK_CPUS
 # support for page migration
 #
 config MIGRATION
-       def_bool y if NUMA || SPARSEMEM || DISCONTIGMEM
-       depends on SWAP
+       bool "Page migration"
+       def_bool y
+       depends on NUMA
+       help
+         Allows the migration of the physical location of pages of processes
+         while the virtual addresses are not changed. This is useful for
+         example on NUMA systems to put pages nearer to the processors accessing
+         the page.
+
+config RESOURCES_64BIT
+       bool "64 bit Memory and IO resources (EXPERIMENTAL)" if (!64BIT && EXPERIMENTAL)
+       default 64BIT
+       help
+         This option allows memory and IO resources to be 64 bit.