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https://github.com/edk2-porting/linux-next.git
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0391fcb5e1
Introduce compile time check for files which should avoid using .bss section, because of the following reasons: - .bss section has not been zeroed yet, - initrd has not been moved to a safe location and could be overlapping with .bss section. Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
104 lines
3.1 KiB
Makefile
104 lines
3.1 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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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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# Do not trace tracer code
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CFLAGS_REMOVE_ftrace.o = $(CC_FLAGS_FTRACE)
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# Do not trace early setup code
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CFLAGS_REMOVE_als.o = $(CC_FLAGS_FTRACE)
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CFLAGS_REMOVE_early.o = $(CC_FLAGS_FTRACE)
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CFLAGS_REMOVE_early_nobss.o = $(CC_FLAGS_FTRACE)
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endif
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GCOV_PROFILE_als.o := n
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GCOV_PROFILE_early.o := n
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GCOV_PROFILE_early_nobss.o := n
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KCOV_INSTRUMENT_als.o := n
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KCOV_INSTRUMENT_early.o := n
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KCOV_INSTRUMENT_early_nobss.o := n
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UBSAN_SANITIZE_als.o := n
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UBSAN_SANITIZE_early.o := n
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UBSAN_SANITIZE_early_nobss.o := n
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#
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# Use -march=z900 for als.c to be able to print an error
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# message if the kernel is started on a machine which is too old
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#
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ifneq ($(CC_FLAGS_MARCH),-march=z900)
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CFLAGS_REMOVE_als.o += $(CC_FLAGS_MARCH)
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CFLAGS_REMOVE_als.o += $(CC_FLAGS_EXPOLINE)
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CFLAGS_als.o += -march=z900
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AFLAGS_REMOVE_head.o += $(CC_FLAGS_MARCH)
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AFLAGS_head.o += -march=z900
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endif
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CFLAGS_als.o += -D__NO_FORTIFY
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#
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# Passing null pointers is ok for smp code, since we access the lowcore here.
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#
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CFLAGS_smp.o := -Wno-nonnull
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#
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# Disable tailcall optimizations for stack / callchain walking functions
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# since this might generate broken code when accessing register 15 and
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# passing its content to other functions.
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#
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CFLAGS_stacktrace.o += -fno-optimize-sibling-calls
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CFLAGS_dumpstack.o += -fno-optimize-sibling-calls
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#
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# Pass UTS_MACHINE for user_regset definition
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#
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CFLAGS_ptrace.o += -DUTS_MACHINE='"$(UTS_MACHINE)"'
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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 vdso.o als.o early_nobss.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 fpu.o dumpstack.o guarded_storage.o sthyi.o
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obj-y += entry.o reipl.o relocate_kernel.o kdebugfs.o alternative.o
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obj-y += nospec-branch.o
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extra-y += head.o head64.o vmlinux.lds
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obj-$(CONFIG_SYSFS) += nospec-sysfs.o
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CFLAGS_REMOVE_nospec-branch.o += $(CC_FLAGS_EXPOLINE)
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obj-$(CONFIG_MODULES) += module.o
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obj-$(CONFIG_SMP) += smp.o
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obj-$(CONFIG_SCHED_TOPOLOGY) += topology.o
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obj-$(CONFIG_HIBERNATION) += suspend.o swsusp.o
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obj-$(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_EARLY_PRINTK) += early_printk.o
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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_KEXEC_FILE) += machine_kexec_file.o kexec_image.o
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obj-$(CONFIG_KEXEC_FILE) += kexec_elf.o
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obj-$(CONFIG_PERF_EVENTS) += perf_event.o perf_cpum_cf.o perf_cpum_sf.o
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obj-$(CONFIG_PERF_EVENTS) += perf_cpum_cf_events.o perf_regs.o
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obj-$(CONFIG_TRACEPOINTS) += trace.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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chkbss := head.o head64.o als.o early_nobss.o
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include $(srctree)/arch/s390/scripts/Makefile.chkbss
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