compiling benh kernel with pmu fails

[Martin Karger <rewt@gmx.de>]

hi folks!

i have trouble compiling the current benh-kernel when i have enabled 
CONFIG_PMAC_PBOOK which is needed for apm-emulation.

i have an ibook2.2 and i think i need that for suspending etc.

i got the following error:

arch/ppc/platforms/platform.o(.text+0x340): In function `low_sleep_handler':
: undefined reference to `__flush_disable_L1'
arch/ppc/platforms/platform.o(.text+0x340): In function `low_sleep_handler':
: relocation truncated to fit: R_PPC_REL24 __flush_disable_L1
arch/ppc/platforms/platform.o(.text+0x3c4): In function `grackle_wake_up':
: undefined reference to `__inval_enable_L1'
arch/ppc/platforms/platform.o(.text+0x3c4): In function `grackle_wake_up':
: relocation truncated to fit: R_PPC_REL24 __inval_enable_L1
make[1]: *** [vmlinux] Error 1
make[1]: Leaving directory `/usr/src/benhrsync'
make: *** [stamp-build] Error 2

i got it when using bk-version as well as rsync.
if needed i can post my current .config

any ideas?

greetings
martin