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

Kamalesh Babulal
2007-09-26T08:20:23Z

KAMEZAWA Hiroyuki wrote:
> 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
>
> -
Hi Kame,

Thanks, your patch fixes the problem.

--
Thanks & Regards,
Kamalesh Babulal,
Linux Technology Center,
IBM, ISTL.