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Date: Mon, 24 Oct 2022 13:29:00 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Fangrui Song <maskray@...gle.com>, Nick Desaulniers <ndesaulniers@...gle.com>, Nathan Chancellor <nathan@...nel.org>, Conor Dooley <conor.dooley@...rochip.com>, Palmer Dabbelt <palmer@...osinc.com> Subject: [PATCH 5.4 030/255] riscv: Pass -mno-relax only on lld < 15.0.0 From: Fangrui Song <maskray@...gle.com> commit 3cebf80e9a0d3adcb174053be32c88a640b3344b upstream. lld since llvm:6611d58f5bbc ("[ELF] Relax R_RISCV_ALIGN"), which will be included in the 15.0.0 release, has implemented some RISC-V linker relaxation. -mno-relax is no longer needed in KBUILD_CFLAGS/KBUILD_AFLAGS to suppress R_RISCV_ALIGN which older lld can not handle: 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: Fangrui Song <maskray@...gle.com> Link: https://lore.kernel.org/r/20220710071117.446112-1-maskray@google.com/ Link: https://lore.kernel.org/r/20220918092933.19943-1-palmer@rivosinc.com Reviewed-by: Nick Desaulniers <ndesaulniers@...gle.com> Tested-by: Nick Desaulniers <ndesaulniers@...gle.com> Tested-by: Nathan Chancellor <nathan@...nel.org> Tested-by: Conor Dooley <conor.dooley@...rochip.com> Cc: stable@...r.kernel.org Signed-off-by: Palmer Dabbelt <palmer@...osinc.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- arch/riscv/Makefile | 2 ++ 1 file changed, 2 insertions(+) --- a/arch/riscv/Makefile +++ b/arch/riscv/Makefile @@ -35,6 +35,7 @@ else endif ifeq ($(CONFIG_LD_IS_LLD),y) +ifeq ($(shell test $(CONFIG_LLD_VERSION) -lt 150000; echo $$?),0) KBUILD_CFLAGS += -mno-relax KBUILD_AFLAGS += -mno-relax ifneq ($(LLVM_IAS),1) @@ -42,6 +43,7 @@ ifneq ($(LLVM_IAS),1) KBUILD_AFLAGS += -Wa,-mno-relax endif endif +endif # ISA string setting riscv-march-$(CONFIG_ARCH_RV32I) := rv32ima
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