Commit d7b9dc14 authored by Nina Schoetterl-Glausch's avatar Nina Schoetterl-Glausch Committed by Janosch Frank
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KVM: selftests: Compile s390 tests with -march=z10 



The guest used in s390 kvm selftests is not be set up to handle all
instructions the compiler might emit, i.e. vector instructions, leading
to crashes.
Limit what the compiler emits to the oldest machine model currently
supported by Linux.

Signed-off-by: default avatarNina Schoetterl-Glausch <nsg@linux.ibm.com>
Reviewed-by: default avatarJanosch Frank <frankja@linux.ibm.com>
Reviewed-by: default avatarThomas Huth <thuth@redhat.com>
Link: https://lore.kernel.org/r/20230127174552.3370169-1-nsg@linux.ibm.com


Message-Id: <20230127174552.3370169-1-nsg@linux.ibm.com>
Signed-off-by: default avatarJanosch Frank <frankja@linux.ibm.com>
parent f2d3155e

tools/testing/selftests/kvm/Makefile

+3 −0
Original line number Original line Diff line number Diff line
@@ -200,6 +200,9 @@ CFLAGS += -Wall -Wstrict-prototypes -Wuninitialized -O2 -g -std=gnu99 \ 
	-I$(LINUX_TOOL_ARCH_INCLUDE) -I$(LINUX_HDR_PATH) -Iinclude \

	-I$(LINUX_TOOL_ARCH_INCLUDE) -I$(LINUX_HDR_PATH) -Iinclude \

	-I$(<D) -Iinclude/$(ARCH_DIR) -I ../rseq -I.. $(EXTRA_CFLAGS) \

	-I$(<D) -Iinclude/$(ARCH_DIR) -I ../rseq -I.. $(EXTRA_CFLAGS) \

	$(KHDR_INCLUDES)

	$(KHDR_INCLUDES)

ifeq ($(ARCH),s390)

	CFLAGS += -march=z10

endif





no-pie-option := $(call try-run, echo 'int main(void) { return 0; }' | \

no-pie-option := $(call try-run, echo 'int main(void) { return 0; }' | \

        $(CC) -Werror $(CFLAGS) -no-pie -x c - -o "$$TMP", -no-pie)

        $(CC) -Werror $(CFLAGS) -no-pie -x c - -o "$$TMP", -no-pie)