Commit cbfd44bd authored Nov 21, 2023 by WANG Rui Committed by Huacai Chen Nov 21, 2023

LoongArch: Explicitly set -fdirect-access-external-data for vmlinux

After this llvm commit [1], The -fno-pic does not imply direct access
external data. Explicitly set -fdirect-access-external-data for vmlinux
that can avoids GOT entries.

Link: https://github.com/llvm/llvm-project/commit/47eeee297775347cbdb7624d6a766c2a3eec4a59


Suggested-by: Xi Ruoyao <xry111@xry111.site>
Signed-off-by: WANG Rui <wangrui@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

parent d3ec75bc

arch/loongarch/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -68,6 +68,7 @@ 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_CFLAGS_KERNEL += $(call cc-option,-fdirect-access-external-data)
		KBUILD_AFLAGS_MODULE += $(call cc-option,-fno-direct-access-external-data)
		KBUILD_CFLAGS_MODULE += $(call cc-option,-fno-direct-access-external-data)
		KBUILD_AFLAGS_MODULE += $(call cc-option,-mno-relax) $(call cc-option,-Wa$(comma)-mno-relax)