diff options
| author | Palmer Dabbelt | 2023-02-23 14:46:05 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2023-03-17 08:50:14 +0100 |
| commit | 1c39d126b51b31c14a0a33393ae49b20ca0c571c (patch) | |
| tree | 23bb4f614d244de5640420e6c26b6aa02f1da55b /arch | |
| parent | 120f7a92871988bf0ced8d6c0b50b93a74f17639 (diff) | |
RISC-V: Stop emitting attributes
commit e18048da9bc3f87acef4eb67a11b4fc55fe15424 upstream.
The RISC-V ELF attributes don't contain any useful information. New
toolchains ignore them, but they frequently trip up various older/mixed
toolchains. So just turn them off.
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230223224605.6995-1-palmer@rivosinc.com
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/riscv/Makefile | 7 | ||||
| -rw-r--r-- | arch/riscv/kernel/compat_vdso/Makefile | 4 |
2 files changed, 11 insertions, 0 deletions
diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile index ba8050e63acf..8b4ddccea279 100644 --- a/arch/riscv/Makefile +++ b/arch/riscv/Makefile @@ -87,6 +87,13 @@ endif # Avoid generating .eh_frame sections. KBUILD_CFLAGS += -fno-asynchronous-unwind-tables -fno-unwind-tables +# The RISC-V attributes frequently cause compatibility issues and provide no +# information, so just turn them off. +KBUILD_CFLAGS += $(call cc-option,-mno-riscv-attribute) +KBUILD_AFLAGS += $(call cc-option,-mno-riscv-attribute) +KBUILD_CFLAGS += $(call as-option,-Wa$(comma)-mno-arch-attr) +KBUILD_AFLAGS += $(call as-option,-Wa$(comma)-mno-arch-attr) + KBUILD_CFLAGS_MODULE += $(call cc-option,-mno-relax) KBUILD_AFLAGS_MODULE += $(call as-option,-Wa$(comma)-mno-relax) diff --git a/arch/riscv/kernel/compat_vdso/Makefile b/arch/riscv/kernel/compat_vdso/Makefile index 260daf3236d3..7f34f3c7c882 100644 --- a/arch/riscv/kernel/compat_vdso/Makefile +++ b/arch/riscv/kernel/compat_vdso/Makefile @@ -14,6 +14,10 @@ COMPAT_LD := $(LD) COMPAT_CC_FLAGS := -march=rv32g -mabi=ilp32 COMPAT_LD_FLAGS := -melf32lriscv +# Disable attributes, as they're useless and break the build. +COMPAT_CC_FLAGS += $(call cc-option,-mno-riscv-attribute) +COMPAT_CC_FLAGS += $(call as-option,-Wa$(comma)-mno-arch-attr) + # Files to link into the compat_vdso obj-compat_vdso = $(patsubst %, %.o, $(compat_vdso-syms)) note.o |