This patch is now in linux-next (tag next-20120507). But it looks to have
broken the ia64 build. I see this error:

  CC      init/version.o
  LD      init/built-in.o
  KSYM    .tmp_kallsyms1.o
ld: .tmp_kallsyms1.o: linking constant-gp files with non-constant-gp files
ld: failed to merge target specific data of file .tmp_kallsyms1.o
make: *** [vmlinux] Error 1

which looks like we used the wrong compile options when building
.tmp_kallsyms1.o

-Tony