[PATCH v4 20/35] s390/boot: Turn off KMSAN

[Ilya Leoshkevich]

All other sanitizers are disabled for boot as well. While at it, add a
comment explaining why we need this.

Reviewed-by: Alexander Gordeev <agordeev@xxxxxxxxxxxxx>
Reviewed-by: Alexander Potapenko <glider@xxxxxxxxxx>
Signed-off-by: Ilya Leoshkevich <iii@xxxxxxxxxxxxx>
---
 arch/s390/boot/Makefile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/s390/boot/Makefile b/arch/s390/boot/Makefile
index 070c9b2e905f..526ed20b9d31 100644
--- a/arch/s390/boot/Makefile
+++ b/arch/s390/boot/Makefile
@@ -3,11 +3,13 @@
 # Makefile for the linux s390-specific parts of the memory manager.
 #
 
+# Tooling runtimes are unavailable and cannot be linked for early boot code
 KCOV_INSTRUMENT := n
 GCOV_PROFILE := n
 UBSAN_SANITIZE := n
 KASAN_SANITIZE := n
 KCSAN_SANITIZE := n
+KMSAN_SANITIZE := n
 
 KBUILD_AFLAGS := $(KBUILD_AFLAGS_DECOMPRESSOR)
 KBUILD_CFLAGS := $(KBUILD_CFLAGS_DECOMPRESSOR)
-- 
2.45.1