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

Kamalesh Babulal
2007-09-26T08:19:21Z

Badari Pulavarty wrote:
> On Wed, 2007-09-26 at 01:30 +0530, Kamalesh Babulal wrote:
>> Hi Andrew,
>>
>> The 2.6.23-rc8-mm1 kernel linking fails on the powerpc (P5+) box
>>
>> CC init/version.o
>> LD init/built-in.o
>> LD .tmp_vmlinux1
>> drivers/built-in.o: In function `memory_block_action':
>> /root/scrap/linux-2.6.23-rc8/drivers/base/memory.c:188: undefined reference to `.remove_memory'
>> make: *** [.tmp_vmlinux1] Error 1
>>
>
> I ran into the same thing earlier. Here is the fix I made.
>
> Thanks,
> Badari
>
> Memory hotplug remove is currently supported only on IA64
>
> Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>
>
> Index: linux-2.6.23-rc8/mm/Kconfig
> ===================================================================
> --- linux-2.6.23-rc8.orig/mm/Kconfig 2007-09-25 14:44:03.000000000 -0700
> +++ linux-2.6.23-rc8/mm/Kconfig 2007-09-25 14:44:48.000000000 -0700
> @@ -143,6 +143,7 @@ config MEMORY_HOTREMOVE
> bool "Allow for memory hot remove"
> depends on MEMORY_HOTPLUG
> depends on MIGRATION
> + depends on (IA64)
>
> # Heavily threaded applications may benefit from splitting the mm-wide
> # page_table_lock, so that faults on different parts of the user address
>
>
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Hi Badari,

Thanks, your patch fixed the problem.

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