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authorChristian Borntraeger <borntraeger@de.ibm.com>2019-12-18 11:34:57 +0300
committerVasily Gorbik <gor@linux.ibm.com>2019-12-19 01:29:26 +0300
commitc23587c92f6e3260fe3b82bb75b38aa2553b9468 (patch)
treea9547a1956cc2d88ff07349b96ae95a721093fa0 /arch/s390/purgatory
parentcd92ac253063981c96abfc3fdb326e430bd89ea6 (diff)
downloadlinux-c23587c92f6e3260fe3b82bb75b38aa2553b9468.tar.xz
s390/purgatory: do not build purgatory with kcov, kasan and friends
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>
Diffstat (limited to 'arch/s390/purgatory')
-rw-r--r--arch/s390/purgatory/Makefile6
-rw-r--r--arch/s390/purgatory/string.c3
2 files changed, 7 insertions, 2 deletions
diff --git a/arch/s390/purgatory/Makefile b/arch/s390/purgatory/Makefile
index 13e9a5dc0a07..c57f8c40e992 100644
--- a/arch/s390/purgatory/Makefile
+++ b/arch/s390/purgatory/Makefile
@@ -15,8 +15,10 @@ CFLAGS_sha256.o := -D__DISABLE_EXPORTS
$(obj)/mem.o: $(srctree)/arch/s390/lib/mem.S FORCE
$(call if_changed_rule,as_o_S)
-$(obj)/string.o: $(srctree)/arch/s390/lib/string.c FORCE
- $(call if_changed_rule,cc_o_c)
+KCOV_INSTRUMENT := n
+GCOV_PROFILE := n
+UBSAN_SANITIZE := n
+KASAN_SANITIZE := n
KBUILD_CFLAGS := -fno-strict-aliasing -Wall -Wstrict-prototypes
KBUILD_CFLAGS += -Wno-pointer-sign -Wno-sign-compare
diff --git a/arch/s390/purgatory/string.c b/arch/s390/purgatory/string.c
new file mode 100644
index 000000000000..c98c22a72db7
--- /dev/null
+++ b/arch/s390/purgatory/string.c
@@ -0,0 +1,3 @@
+// SPDX-License-Identifier: GPL-2.0
+#define __HAVE_ARCH_MEMCMP /* arch function */
+#include "../lib/string.c"