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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 fa2ac0e56b43..fe7ee2b0f29c 100644
--- a/tools/testing/selftests/lib.mk
+++ b/tools/testing/selftests/lib.mk
@@ -48,6 +48,7 @@ ARCH ?= $(SUBARCH)
# When local build is done, headers are installed in the default
# INSTALL_HDR_PATH usr/include.
.PHONY: khdr
+.NOTPARALLEL:
khdr:
ifndef KSFT_KHDR_INSTALL_DONE
ifeq (1,$(DEFAULT_INSTALL_HDR_PATH))