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| author |   Heiko Carstens <hca@linux.ibm.com> | 2022-05-11 14:05:31 +0200 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2022-05-17 15:16:29 +0200 |
| commit | bb31074db95f735004203b307e63e2e0d4ef9c26 (patch) | |
| tree | ff95f740415fae446722780ac30d5c70518846fe /arch/s390/Makefile | |
| parent | s390/boot: workaround llvm IAS bug (diff) | |
| download | linux-dev-bb31074db95f735004203b307e63e2e0d4ef9c26.tar.xz linux-dev-bb31074db95f735004203b307e63e2e0d4ef9c26.zip | |
s390/boot: do not emit debug info for assembly with llvm's IAS
Commit ee6d777d3e93 ("s390/decompressor: support extra debug flags")
added extra debug flags, in particular debug info is created,
depending on config options.
With llvm's IAS this causes this compile warning:
arch/s390/boot/head.S:38:1: warning: DWARF2 only supports one section per compilation unit
.section ".head.text","ax"
^
This is a known problem and was addressed with commit b8a9092330da
("Kbuild: do not emit debug info for assembly with LLVM_IAS=1").
Just do the same for s390 to get rid of this warning.
Tested-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Link: https://lore.kernel.org/r/20220511120532.2228616-8-hca@linux.ibm.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Diffstat (limited to 'arch/s390/Makefile')
| -rw-r--r-- | arch/s390/Makefile | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/s390/Makefile b/arch/s390/Makefile index e441b60b1812..12037c9e3802 100644 --- a/arch/s390/Makefile +++ b/arch/s390/Makefile @@ -20,7 +20,9 @@ LDFLAGS_vmlinux := -pie endif aflags_dwarf := -Wa,-gdwarf-2 KBUILD_AFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -D__ASSEMBLY__ +ifndef CONFIG_AS_IS_LLVM KBUILD_AFLAGS_DECOMPRESSOR += $(if $(CONFIG_DEBUG_INFO),$(aflags_dwarf)) +endif KBUILD_CFLAGS_DECOMPRESSOR := $(CLANG_FLAGS) -m64 -O2 -mpacked-stack KBUILD_CFLAGS_DECOMPRESSOR += -DDISABLE_BRANCH_PROFILING -D__NO_FORTIFY KBUILD_CFLAGS_DECOMPRESSOR += -fno-delete-null-pointer-checks -msoft-float -mbackchain |