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5a79859ae0
Remove the 31 bit support in order to reduce maintenance cost and
effectively remove dead code. Since a couple of years there is no
distribution left that comes with a 31 bit kernel.
The 31 bit kernel also has been broken since more than a year before
anybody noticed. In addition I added a removal warning to the kernel
shown at ipl for 5 minutes: a960062e58 ("s390: add 31 bit warning
message") which let everybody know about the plan to remove 31 bit
code. We didn't get any response.
Given that the last 31 bit only machine was introduced in 1999 let's
remove the code.
Anybody with 31 bit user space code can still use the compat mode.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
60 lines
1.9 KiB
Makefile
60 lines
1.9 KiB
Makefile
#
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# Makefile for the linux kernel.
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#
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ifdef CONFIG_FUNCTION_TRACER
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# Don't trace early setup code and tracing code
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CFLAGS_REMOVE_early.o = $(CC_FLAGS_FTRACE)
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CFLAGS_REMOVE_ftrace.o = $(CC_FLAGS_FTRACE)
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endif
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#
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# Passing null pointers is ok for smp code, since we access the lowcore here.
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#
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CFLAGS_smp.o := -Wno-nonnull
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#
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# Disable tailcall optimizations for stack / callchain walking functions
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# since this might generate broken code when accessing register 15 and
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# passing its content to other functions.
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#
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CFLAGS_stacktrace.o += -fno-optimize-sibling-calls
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CFLAGS_dumpstack.o += -fno-optimize-sibling-calls
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#
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# Pass UTS_MACHINE for user_regset definition
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#
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CFLAGS_ptrace.o += -DUTS_MACHINE='"$(UTS_MACHINE)"'
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CFLAGS_sysinfo.o += -w
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obj-y := traps.o time.o process.o base.o early.o setup.o idle.o vtime.o
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obj-y += processor.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o nmi.o
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obj-y += debug.o irq.o ipl.o dis.o diag.o sclp.o vdso.o
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obj-y += sysinfo.o jump_label.o lgr.o os_info.o machine_kexec.o pgm_check.o
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obj-y += runtime_instr.o cache.o dumpstack.o
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obj-y += entry64.o reipl64.o relocate_kernel64.o
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extra-y += head.o head64.o vmlinux.lds
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obj-$(CONFIG_MODULES) += s390_ksyms.o module.o
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obj-$(CONFIG_SMP) += smp.o
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obj-$(CONFIG_SCHED_BOOK) += topology.o
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obj-$(CONFIG_HIBERNATION) += suspend.o swsusp_asm64.o
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obj-$(CONFIG_AUDIT) += audit.o
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compat-obj-$(CONFIG_AUDIT) += compat_audit.o
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obj-$(CONFIG_COMPAT) += compat_linux.o compat_signal.o
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obj-$(CONFIG_COMPAT) += compat_wrapper.o $(compat-obj-y)
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obj-$(CONFIG_STACKTRACE) += stacktrace.o
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obj-$(CONFIG_KPROBES) += kprobes.o
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obj-$(CONFIG_FUNCTION_TRACER) += mcount.o ftrace.o
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obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
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obj-$(CONFIG_UPROBES) += uprobes.o
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obj-$(CONFIG_PERF_EVENTS) += perf_event.o perf_cpum_cf.o perf_cpum_sf.o
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obj-$(CONFIG_PERF_EVENTS) += perf_cpum_cf_events.o
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# vdso
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obj-y += vdso64/
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obj-$(CONFIG_COMPAT) += vdso32/
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