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| author | Heiko Carstens <hca@linux.ibm.com> | 2026-06-09 13:33:35 +0300 |
|---|---|---|
| committer | Alexander Gordeev <agordeev@linux.ibm.com> | 2026-06-10 17:55:20 +0300 |
| commit | bd9a200717fb15bcbf666b1a8c6758887215b0fb (patch) | |
| tree | e5e19b8b9618e730739ca8f6a83bb3cb454cba7c | |
| parent | 982c89c9b9eed1f512038a163d5cab6b0b8117ff (diff) | |
| download | linux-bd9a200717fb15bcbf666b1a8c6758887215b0fb.tar.xz | |
s390/purgatory: Enforce z10 minimum architecture level
The purgatory code is compiled without the -march option. This means the
default architecture level of the compiler is used. This can cause
problems, e.g. if instructions used in inline assemblies are for a higher
architecture level than the default architecture level of the compiler.
Use z10 as minimum architecture level, similar to the boot code, to enforce
a defined architecture level set.
Reviewed-by: Juergen Christ <jchrist@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
| -rw-r--r-- | arch/s390/purgatory/Makefile | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/s390/purgatory/Makefile b/arch/s390/purgatory/Makefile index 95a8ac45b67e..f55764d0c49e 100644 --- a/arch/s390/purgatory/Makefile +++ b/arch/s390/purgatory/Makefile @@ -13,18 +13,20 @@ CFLAGS_sha256.o := -D__NO_FORTIFY $(obj)/mem.o: $(srctree)/arch/s390/lib/mem.S FORCE $(call if_changed_rule,as_o_S) +CC_FLAGS_MARCH_MINIMUM := -march=z10 + KBUILD_CFLAGS := $(CC_FLAGS_DIALECT) -fno-strict-aliasing -Wall -Wstrict-prototypes KBUILD_CFLAGS += -Wno-pointer-sign -Wno-sign-compare KBUILD_CFLAGS += -fno-zero-initialized-in-bss -fno-builtin -ffreestanding KBUILD_CFLAGS += -Os -m64 -msoft-float -fno-common KBUILD_CFLAGS += -fno-stack-protector KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING -KBUILD_CFLAGS += -D__DISABLE_EXPORTS +KBUILD_CFLAGS += $(CC_FLAGS_MARCH_MINIMUM) -D__DISABLE_EXPORTS KBUILD_CFLAGS += $(CLANG_FLAGS) KBUILD_CFLAGS += $(call cc-option,-fno-PIE) KBUILD_CFLAGS += $(call cc-option, -Wno-default-const-init-unsafe) KBUILD_AFLAGS := $(filter-out -DCC_USING_EXPOLINE,$(KBUILD_AFLAGS)) -KBUILD_AFLAGS += -D__DISABLE_EXPORTS +KBUILD_AFLAGS += $(CC_FLAGS_MARCH_MINIMUM) -D__DISABLE_EXPORTS # Since we link purgatory with -r unresolved symbols are not checked, so we # also link a purgatory.chk binary without -r to check for unresolved symbols. |