From: Fangrui Song <maskray@google.com> To: Paul Walmsley <paul.walmsley@sifive.com>, Palmer Dabbelt <palmer@dabbelt.com>, Albert Ou <aou@eecs.berkeley.edu>, linux-riscv@lists.infradead.org Cc: Khem Raj <raj.khem@gmail.com>, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, Fangrui Song <maskray@google.com> Subject: [PATCH] riscv: Pass -mno-relax only on lld < 15.0.0 Date: Sun, 10 Jul 2022 00:11:17 -0700 [thread overview] Message-ID: <20220710071117.446112-1-maskray@google.com> (raw) lld since https://github.com/llvm/llvm-project/commit/6611d58f5bbcbec77262d392e2923e1d680f6985 (milestone: 15.0.0) 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@google.com> --- arch/riscv/Makefile | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile index 34cf8a598617..7e4ceb2a0981 100644 --- a/arch/riscv/Makefile +++ b/arch/riscv/Makefile @@ -37,6 +37,7 @@ else endif ifeq ($(CONFIG_LD_IS_LLD),y) +ifeq ($(shell test $(CONFIG_LLD_VERSION) -lt 150000; echo $$?),0) KBUILD_CFLAGS += -mno-relax KBUILD_AFLAGS += -mno-relax ifndef CONFIG_AS_IS_LLVM @@ -44,6 +45,7 @@ ifndef CONFIG_AS_IS_LLVM KBUILD_AFLAGS += -Wa,-mno-relax endif endif +endif # ISA string setting riscv-march-$(CONFIG_ARCH_RV32I) := rv32ima -- 2.37.0.144.g8ac04bfd2-goog
WARNING: multiple messages have this Message-ID (diff)
From: Fangrui Song <maskray@google.com> To: Paul Walmsley <paul.walmsley@sifive.com>, Palmer Dabbelt <palmer@dabbelt.com>, Albert Ou <aou@eecs.berkeley.edu>, linux-riscv@lists.infradead.org Cc: Khem Raj <raj.khem@gmail.com>, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, Fangrui Song <maskray@google.com> Subject: [PATCH] riscv: Pass -mno-relax only on lld < 15.0.0 Date: Sun, 10 Jul 2022 00:11:17 -0700 [thread overview] Message-ID: <20220710071117.446112-1-maskray@google.com> (raw) lld since https://github.com/llvm/llvm-project/commit/6611d58f5bbcbec77262d392e2923e1d680f6985 (milestone: 15.0.0) has implemented some RISC-V linker relaxation. -mno-relax is no longer needed in KBUILD_CFLAGS/KBUILD_AFLAGS to suppress R_RISCV_ALIGN which older lld can not handle: ld.lld: error: capability.c:(.fixup+0x0): relocation R_RISCV_ALIGN requires unimplemented linker relaxation; recompile with -mno-relax but the .o is already compiled with -mno-relax Signed-off-by: Fangrui Song <maskray@google.com> --- arch/riscv/Makefile | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile index 34cf8a598617..7e4ceb2a0981 100644 --- a/arch/riscv/Makefile +++ b/arch/riscv/Makefile @@ -37,6 +37,7 @@ else endif ifeq ($(CONFIG_LD_IS_LLD),y) +ifeq ($(shell test $(CONFIG_LLD_VERSION) -lt 150000; echo $$?),0) KBUILD_CFLAGS += -mno-relax KBUILD_AFLAGS += -mno-relax ifndef CONFIG_AS_IS_LLVM @@ -44,6 +45,7 @@ ifndef CONFIG_AS_IS_LLVM KBUILD_AFLAGS += -Wa,-mno-relax endif endif +endif # ISA string setting riscv-march-$(CONFIG_ARCH_RV32I) := rv32ima -- 2.37.0.144.g8ac04bfd2-goog _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv
next reply other threads:[~2022-07-10 7:11 UTC|newest] Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-07-10 7:11 Fangrui Song [this message] 2022-07-10 7:11 ` [PATCH] riscv: Pass -mno-relax only on lld < 15.0.0 Fangrui Song 2022-07-11 17:36 ` Nathan Chancellor 2022-07-11 17:36 ` Nathan Chancellor 2022-07-11 17:38 ` Nick Desaulniers 2022-07-11 17:38 ` Nick Desaulniers 2022-09-08 17:18 ` Nathan Chancellor 2022-09-08 17:18 ` Nathan Chancellor 2022-07-13 4:16 kernel test robot 2022-07-13 5:48 ` Fangrui Song 2022-07-13 5:48 ` Fangrui Song 2022-07-13 7:19 ` Fangrui Song 2022-07-13 7:19 ` Fangrui Song
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