Hi, Maybe I'm missing something completely obvious, but I don't see where the arch/x86/kernel/acpi/sleep_32.c file gets compiled. The Makefile in that directory compiles sleep.o, but doesn't compile sleep_$(BITS).o: obj-$(CONFIG_ACPI) += boot.o obj-$(CONFIG_ACPI_SLEEP) += sleep.o wakeup_$(BITS).o ifneq ($(CONFIG_ACPI_PROCESSOR),) obj-y += cstate.o processor.o endif Sincerly, Thomas -- Thomas Petazzoni, thomas.petazzoni@enix.org, http://thomas.enix.org Jabber, thomas.petazzoni@jabber.dk Toulibre, http://www.toulibre.org - APRIL, http://www.april.org Fingerprint : 0BE1 4CF3 CEA4 AC9D CC6E 1624 F653 CB30 98D3 F7A7