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

Badari Pulavarty
2007-09-25T21:59:26Z

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