On Thu, Jan 11, 2024 at 11:00:12AM +0100, Andrew Jones wrote: [...] > Also, interestingly, it looks like this ancient line > > obj-$(CONFIG_ACPI_PROCESSOR) += processor.o > > in drivers/acpi/Makefile should be removed, No > since there's no drivers/acpi/processor.c file. Correct, but .. > I guess the make process silently filters object files which don't have > corresponding source files? May be, but I doubt if that is the case here. processor.o is just aggregation of all processor_*.o and this will be the processor.ko when built as a module. -- Regards, Sudeep