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-rw-r--r--tools/testing/selftests/lib.mk1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/testing/selftests/lib.mk b/tools/testing/selftests/lib.mk
index a5d40653a921..9700281bee4c 100644
--- a/tools/testing/selftests/lib.mk
+++ b/tools/testing/selftests/lib.mk
@@ -26,6 +26,7 @@ include $(top_srcdir)/scripts/subarch.include
ARCH ?= $(SUBARCH)
.PHONY: khdr
+.NOTPARALLEL:
khdr:
make ARCH=$(ARCH) -C $(top_srcdir) headers_install