LoongArch: Fix module relocation error with binutils 2.41

Binutils 2.41 enables linker relaxation by default, but the kernel
module loader doesn't support that, so just disable it. Otherwise we
get such an error when loading modules:

"Unknown relocation type 102"

As an alternative, we could add linker relaxation support in the kernel
module loader. But it is relatively large complexity that may or may not
bring a similar gain, and we don't really want to include this linker
pass in the kernel.

Reviewed-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

diff --git a/arch/loongarch/Makefile b/arch/loongarch/Makefile
index f2b570633c71923d407414cca37364897a200237..b1e5db51b61cac65bf1c60a8248473df9d73f8a5 100644 (file)
--- a/arch/loongarch/Makefile
+++ b/arch/loongarch/Makefile
@@ -68,6 +68,8 @@ LDFLAGS_vmlinux                       += -static -n -nostdlib
 ifdef CONFIG_AS_HAS_EXPLICIT_RELOCS
 cflags-y                       += $(call cc-option,-mexplicit-relocs)
 KBUILD_CFLAGS_KERNEL           += $(call cc-option,-mdirect-extern-access)
+KBUILD_AFLAGS_MODULE           += $(call cc-option,-mno-relax) $(call cc-option,-Wa$(comma)-mno-relax)
+KBUILD_CFLAGS_MODULE           += $(call cc-option,-mno-relax) $(call cc-option,-Wa$(comma)-mno-relax)
 else
 cflags-y                       += $(call cc-option,-mno-explicit-relocs)
 KBUILD_AFLAGS_KERNEL           += -Wa,-mla-global-with-pcrel