[PATCH] x86_64: add x86-64 support for memory hot-add
Add x86-64 specific memory hot-add functions, Kconfig options,
and runtime kernel page table update functions to make
hot-add usable on x86-64 machines. Also, fixup the nefarious
conditional locking and exports pointed out by Andi.
Tested on Intel and IBM x86-64 memory hot-add capable systems.
Signed-off-by: Matt Tolentino <matthew.e.tolentino@intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig
index 787feff..2f9deca 100644
--- a/arch/x86_64/Kconfig
+++ b/arch/x86_64/Kconfig
@@ -305,7 +305,11 @@
config ARCH_SPARSEMEM_ENABLE
def_bool y
- depends on NUMA
+ depends on (NUMA || EXPERIMENTAL)
+
+config ARCH_MEMORY_PROBE
+ def_bool y
+ depends on MEMORY_HOTPLUG
config ARCH_FLATMEM_ENABLE
def_bool y
@@ -315,6 +319,7 @@
config HAVE_ARCH_EARLY_PFN_TO_NID
def_bool y
+ depends on NUMA
config NR_CPUS
int "Maximum number of CPUs (2-256)"