Ben Dooks 15155fa898 riscv: add as-options for modules with assembly compontents ... commit c1f6eff304e4dfa4558b6a8c6b2d26a91db6c998 upstream. 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 7a8e7da422 ("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] 3b0a7d624e 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: ab1ef68e54 ("RISC-V: Add sections of PLT and GOT for kernel module") Cc: stable@vger.kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-07-29 17:19:06 +02:00
..
boot	riscv: dts: sifive: fu540-c000: align dma node name with dtschema	2022-05-25 09:17:59 +02:00
configs	riscv: defconfig: enable gpio support for HiFive Unleashed	2021-01-27 11:55:01 +01:00
include	riscv: Fix irq_work when SMP is disabled	2022-06-09 10:20:48 +02:00
kernel	riscv: read-only pages should not be writable	2022-06-14 18:32:36 +02:00
lib	riscv: use memcpy based uaccess for nommu again	2020-10-04 10:27:07 -07:00
mm	riscv: Fix config KASAN && DEBUG_VIRTUAL	2022-03-08 19:09:31 +01:00
net	riscv, bpf: Fix potential NULL dereference	2021-11-02 19:48:21 +01:00
Kbuild	riscv: Allow device trees to be built into the kernel	2020-05-18 11:38:05 -07:00
Kconfig	riscv: Fix asan-stack clang build	2021-11-02 19:48:25 +01:00
Kconfig.debug
Kconfig.socs	RISC-V: Remove CLINT related code from timer and arch	2020-08-20 10:58:13 -07:00
Makefile	riscv: add as-options for modules with assembly compontents	2022-07-29 17:19:06 +02:00