152eaa8626
[ Upstream commit c23587c92f6e3260fe3b82bb75b38aa2553b9468 ] the purgatory must not rely on functions from the "old" kernel, so we must disable kasan and friends. We also need to have a separate copy of string.c as the default does not build memcmp with KASAN. Reported-by: kbuild test robot <lkp@intel.com> Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Reviewed-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
39 lines
1.2 KiB
Makefile
39 lines
1.2 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
|
|
|
|
OBJECT_FILES_NON_STANDARD := y
|
|
|
|
purgatory-y := head.o purgatory.o string.o sha256.o mem.o
|
|
|
|
targets += $(purgatory-y) purgatory.ro kexec-purgatory.c
|
|
PURGATORY_OBJS = $(addprefix $(obj)/,$(purgatory-y))
|
|
|
|
$(obj)/sha256.o: $(srctree)/lib/sha256.c FORCE
|
|
$(call if_changed_rule,cc_o_c)
|
|
|
|
$(obj)/mem.o: $(srctree)/arch/s390/lib/mem.S FORCE
|
|
$(call if_changed_rule,as_o_S)
|
|
|
|
KCOV_INSTRUMENT := n
|
|
GCOV_PROFILE := n
|
|
UBSAN_SANITIZE := n
|
|
KASAN_SANITIZE := n
|
|
|
|
LDFLAGS_purgatory.ro := -e purgatory_start -r --no-undefined -nostdlib
|
|
LDFLAGS_purgatory.ro += -z nodefaultlib
|
|
KBUILD_CFLAGS := -fno-strict-aliasing -Wall -Wstrict-prototypes
|
|
KBUILD_CFLAGS += -Wno-pointer-sign -Wno-sign-compare
|
|
KBUILD_CFLAGS += -fno-zero-initialized-in-bss -fno-builtin -ffreestanding
|
|
KBUILD_CFLAGS += -c -MD -Os -m64 -msoft-float -fno-common
|
|
KBUILD_CFLAGS += $(call cc-option,-fno-PIE)
|
|
KBUILD_AFLAGS := $(filter-out -DCC_USING_EXPOLINE,$(KBUILD_AFLAGS))
|
|
|
|
$(obj)/purgatory.ro: $(PURGATORY_OBJS) FORCE
|
|
$(call if_changed,ld)
|
|
|
|
quiet_cmd_bin2c = BIN2C $@
|
|
cmd_bin2c = $(objtree)/scripts/bin2c kexec_purgatory < $< > $@
|
|
|
|
$(obj)/kexec-purgatory.c: $(obj)/purgatory.ro FORCE
|
|
$(call if_changed,bin2c)
|
|
|
|
obj-$(CONFIG_ARCH_HAS_KEXEC_PURGATORY) += kexec-purgatory.o
|