Queued for loongarch-fixes, thanks. Huacai On Fri, Nov 24, 2023 at 11:56 AM WANG Rui <wangrui@xxxxxxxxxxx> wrote: > > For the following assembly code: > > .text > .global func > func: > nop > > .data > var: > .dword func > > When linked with `-pie`, GNU LD populates the `var` variable with the > pre-relocated value of `func`. However, LLVM LLD does not exhibit the > same behavior. This issue also arises with the `kernel_entry` in > arch/loongarch/kernel/head.S: > > _head: > .word MZ_MAGIC /* "MZ", MS-DOS header */ > .org 0x8 > .dword kernel_entry /* Kernel entry point */ > > The correct kernel entry from the MS-DOS header is crucial for jumping > to vmlinux from zboot. This necessity is why the compressed kernel > compiled by Clang encounters difficulties in booting. > > To address this problem, it is proposed to apply dynamic relocations to > place with `--apply-dynamic-relocs`. > > Link: https://github.com/ClangBuiltLinux/linux/issues/1962 > Signed-off-by: WANG Rui <wangrui@xxxxxxxxxxx> > --- > arch/loongarch/Makefile | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/loongarch/Makefile b/arch/loongarch/Makefile > index 1f0d74403419..05ab85118212 100644 > --- a/arch/loongarch/Makefile > +++ b/arch/loongarch/Makefile > @@ -83,7 +83,7 @@ endif > > ifeq ($(CONFIG_RELOCATABLE),y) > KBUILD_CFLAGS_KERNEL += -fPIE > -LDFLAGS_vmlinux += -static -pie --no-dynamic-linker -z notext > +LDFLAGS_vmlinux += -static -pie --no-dynamic-linker -z notext $(call ld-option, --apply-dynamic-relocs) > endif > > cflags-y += $(call cc-option, -mno-check-zero-division) > -- > 2.43.0 > >
