Seen while building 2.6.17-rc2 on slamd64 with gcc 3.4.4:

Kernel: arch/x86_64/boot/bzImage is ready  (#1)
  Building modules, stage 2.
	MODPOST
	WARNING: drivers/acpi/processor.o - Section mismatch: reference to
	.init.data: from .text.acpi_processor_power_init after
	'acpi_processor_power_init' (at offset 0x16)
	  LD [M]  arch/x86_64/kernel/cpuid.ko

.config attached.

Regards,

Kurt
-- 
Atlanta makes it against the law to tie a giraffe to a telephone pole
or street lamp.