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authorHeiko Carstens <hca@linux.ibm.com>2022-05-11 15:05:31 +0300
committerHeiko Carstens <hca@linux.ibm.com>2022-05-17 16:16:29 +0300
commitbb31074db95f735004203b307e63e2e0d4ef9c26 (patch)
treeff95f740415fae446722780ac30d5c70518846fe /arch/s390/Makefile
parente9953b729b789c0e2984859e3b2170b7fa8520d5 (diff)
downloadlinux-bb31074db95f735004203b307e63e2e0d4ef9c26.tar.xz
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/Makefile2
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