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| author | Khem Raj <raj.khem@gmail.com> | 2021-05-14 14:37:41 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-06-18 10:00:04 +0200 |
| commit | bb73f2f789695028a4cc8baf9d6a8df03fb5ae14 (patch) | |
| tree | 3edbb621aee655df72d818440eeea4e45c737b6e | |
| parent | 35277c1a6669033823d983daa9a1df66e366b688 (diff) | |
| download | linux-bb73f2f789695028a4cc8baf9d6a8df03fb5ae14.tar.gz | |
riscv: Use -mno-relax when using lld linker
[ Upstream commit ec3a5cb61146c91f0f7dcec8b7e7157a4879a9ee ]
lld does not implement the RISCV relaxation optimizations like GNU ld
therefore disable it when building with lld, Also pass it to
assembler when using external GNU assembler ( LLVM_IAS != 1 ), this
ensures that relevant assembler option is also enabled along. if these
options are not used then we see following relocations in objects
0000000000000000 R_RISCV_ALIGN *ABS*+0x0000000000000002
These are then rejected by lld
ld.lld: error: capability.c:(.fixup+0x0): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax but the .o is already compiled with -mno-relax
Signed-off-by: Khem Raj <raj.khem@gmail.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | arch/riscv/Makefile | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile index 0289a97325d12..e241e0e85ac81 100644 --- a/arch/riscv/Makefile +++ b/arch/riscv/Makefile @@ -36,6 +36,15 @@ else KBUILD_LDFLAGS += -melf32lriscv endif +ifeq ($(CONFIG_LD_IS_LLD),y) + KBUILD_CFLAGS += -mno-relax + KBUILD_AFLAGS += -mno-relax +ifneq ($(LLVM_IAS),1) + KBUILD_CFLAGS += -Wa,-mno-relax + KBUILD_AFLAGS += -Wa,-mno-relax +endif +endif + # ISA string setting riscv-march-$(CONFIG_ARCH_RV32I) := rv32ima riscv-march-$(CONFIG_ARCH_RV64I) := rv64ima |