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s390/purgatory: do not build purgatory with kcov, kasan and friends
[ Upstream commit c23587c92f
]
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>
This commit is contained in:
parent
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commit
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2 changed files with 7 additions and 2 deletions
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@ -13,8 +13,10 @@ $(obj)/sha256.o: $(srctree)/lib/sha256.c FORCE
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$(obj)/mem.o: $(srctree)/arch/s390/lib/mem.S FORCE
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$(call if_changed_rule,as_o_S)
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$(obj)/string.o: $(srctree)/arch/s390/lib/string.c FORCE
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$(call if_changed_rule,cc_o_c)
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KCOV_INSTRUMENT := n
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GCOV_PROFILE := n
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UBSAN_SANITIZE := n
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KASAN_SANITIZE := n
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LDFLAGS_purgatory.ro := -e purgatory_start -r --no-undefined -nostdlib
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LDFLAGS_purgatory.ro += -z nodefaultlib
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3
arch/s390/purgatory/string.c
Normal file
3
arch/s390/purgatory/string.c
Normal file
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@ -0,0 +1,3 @@
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// SPDX-License-Identifier: GPL-2.0
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#define __HAVE_ARCH_MEMCMP /* arch function */
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#include "../lib/string.c"
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