-ppc64 headers and arch/ppc/Makefile

[Max Vozeler <max@decl.org>]

Hi kernel team,

I'm trying to build an external module on powerpc. Builds against
-powerpc and -powerpc-smp headers are working fine, but they fail
for -ppc64 with an error about missing arch/ppc/Makefile:

http://experimental.ftbfs.de/fetch.php?&pkg=loop-aes-modules&ver=3.1b%2B6%2B2&arch=powerpc&stamp=1133817465&file=log&as=raw
  ...
  cd /usr/src/linux-headers-2.6.14-2-powerpc64 && make M=/build/buildd/loop-aes-modules-3.1b+6+2/modules/loop-aes/loop-AES-v3.1b/tmp-d-kbuild modules 
  make[3]: Entering directory `/usr/src/linux-headers-2.6.14-2-powerpc64'
  Makefile:530: /usr/src/linux-headers-2.6.14-2-powerpc64/arch/ppc/Makefile: No such file or directory

(This is using linux-headers-2.6.14-2-ppc64 2.6.14-4)

I've seen a lot of resolved bugs and changes recently with regard
to powerpc headers, so I'm unsure where exactly to look for the
problem. Please advice: Is this something my module does wrong, or
rather a problem in -ppc64 headers?

cheers,
Max