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| author | Ben Dooks <ben.dooks@codethink.co.uk> | 2022-05-29 17:22:00 +0200 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2022-07-21 21:09:29 +0200 |
| commit | c1f6eff304e4dfa4558b6a8c6b2d26a91db6c998 (patch) | |
| tree | 1074a9eaaf0191593a8a8f7a5e31703a8b614b94 /crypto/aegis.h | |
| parent | riscv: dts: align gpio-key node names with dtschema (diff) | |
| download | linux-c1f6eff304e4dfa4558b6a8c6b2d26a91db6c998.tar.xz linux-c1f6eff304e4dfa4558b6a8c6b2d26a91db6c998.zip | |
riscv: add as-options for modules with assembly compontents
When trying to load modules built for RISC-V which include assembly files
the kernel loader errors with "unexpected relocation type 'R_RISCV_ALIGN'"
due to R_RISCV_ALIGN relocations being generated by the assembler.
The R_RISCV_ALIGN relocations can be removed at the expense of code space
by adding -mno-relax to gcc and as. In commit 7a8e7da42250138
("RISC-V: Fixes to module loading") -mno-relax is added to the build
variable KBUILD_CFLAGS_MODULE. See [1] for more info.
The issue is that when kbuild builds a .S file, it invokes gcc with
the -mno-relax flag, but this is not being passed through to the
assembler. Adding -Wa,-mno-relax to KBUILD_AFLAGS_MODULE ensures that
the assembler is invoked correctly. This may have now been fixed in
gcc[2] and this addition should not stop newer gcc and as from working.
[1] https://github.com/riscv/riscv-elf-psabi-doc/issues/183
[2] https://github.com/gcc-mirror/gcc/commit/3b0a7d624e64eeb81e4d5e8c62c46d86ef521857
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Link: https://lore.kernel.org/r/20220529152200.609809-1-ben.dooks@codethink.co.uk
Fixes: ab1ef68e5401 ("RISC-V: Add sections of PLT and GOT for kernel module")
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions