On Tue, 7 Nov 2023 13:31:16 +0100 Nina Schoetterl-Glausch <nsg@xxxxxxxxxxxxx> wrote: [...] > -obj-y += smp.o text_amode31.o stacktrace.o abs_lowcore.o > +obj-y += smp.o text_amode31.o stacktrace.o abs_lowcore.o facility.o > > extra-y += vmlinux.lds > > diff --git a/arch/s390/kernel/facility.c b/arch/s390/kernel/facility.c > new file mode 100644 > index 000000000000..5e80a4f65363 > --- /dev/null > +++ b/arch/s390/kernel/facility.c I wonder if this is the right place for this? This function seems to be used only for vsie, maybe you can just move it to vsie.c? or do you think it will be used elsewhere too? [...]