Re: 2.6.23-rc8-mm1 - powerpc memory hotplug link failure

KAMEZAWA Hiroyuki
2007-09-26T01:48:10Z

On Wed, 26 Sep 2007 10:32:05 +0900
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> wrote:
> Maybe my patch is the problem. could you give me your .config ?
>
Ah, memory hot remove is selectable even if the arch doesn't support it....sorry.

ok, this is fix.

Thanks,
-Kame
==
MEMORY_HOTREMOVE config option is selectable even it arch doesn't support it.
This fix it.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>

Index: linux-2.6.23-rc8-mm1/arch/ia64/Kconfig
===================================================================
--- linux-2.6.23-rc8-mm1.orig/arch/ia64/Kconfig
+++ linux-2.6.23-rc8-mm1/arch/ia64/Kconfig
@@ -305,6 +305,9 @@ config HOTPLUG_CPU
config ARCH_ENABLE_MEMORY_HOTPLUG
def_bool y

+config ARCH_ENABLE_MEMORY_HOTREMOVE
+ def_bool y
+
config SCHED_SMT
bool "SMT scheduler support"
depends on SMP
Index: linux-2.6.23-rc8-mm1/mm/Kconfig
===================================================================
--- linux-2.6.23-rc8-mm1.orig/mm/Kconfig
+++ linux-2.6.23-rc8-mm1/mm/Kconfig
@@ -141,7 +141,7 @@ config MEMORY_HOTPLUG_SPARSE

config MEMORY_HOTREMOVE
bool "Allow for memory hot remove"
- depends on MEMORY_HOTPLUG
+ depends on MEMORY_HOTPLUG && ARCH_ENABLE_MEMORY_HOTREMOVE
depends on MIGRATION

# Heavily threaded applications may benefit from splitting the mm-wide