linux

iv/linux

History

Nathan Chancellor ae84ff9a14

riscv: Restrict DWARF5 when building with LLVM to known working versions

LLVM prior to 18.0.0 would generate incorrect debug info for DWARF5 due
to linker relaxation, which was worked around in clang by defaulting
RISC-V to DWARF4 [1]. Unfortunately, this workaround does not work for
the kernel because the DWARF version can be independently changed from
the default in Kconfig.

Do not allow DWARF5 to be selected for RISC-V when using linker
relaxation (ld.lld >= 15.0.0) and a version of LLVM that does not have
the fixes (the integrated assembler [2] and ld.lld [3] < 18.0.0)
necessary to generate the correct debug info.

Link: bbc0f99f3b [1]
Link: 1df5ea29b4 [2]
Link: 7ffabb61a5 [3]
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Fangrui Song <maskray@google.com>
Link: https://lore.kernel.org/r/20231205-riscv-restrict-dwarf5-llvm-v2-2-aedf00a382ac@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>

2024-01-17 18:08:27 -08:00

boot

RISC-V Patches for the 6.7 Merge Window, Part 2

2023-11-10 09:23:17 -08:00

configs

RISC-V Patches for the 6.7 Merge Window, Part 2

2023-11-10 09:23:17 -08:00

errata

riscv: errata: andes: Makefile: Fix randconfig build issue

2023-09-27 07:02:48 -07:00

include

RISC-V Patches for the 6.7 Merge Window, Part 2