On Thu, Aug 12, 2021 at 1:49 PM Bill Wendling <mo...@google.com> wrote: > > The "-z notext" flag disables reporting an error if DT_TEXTREL is set on > PPC with CONFIG=kdump: > > ld.lld: error: can't create dynamic relocation R_PPC64_ADDR64 against > local symbol in readonly segment; recompile object files with -fPIC > or pass '-Wl,-z,notext' to allow text relocations in the output > >>> defined in built-in.a(arch/powerpc/kernel/misc.o) > >>> referenced by arch/powerpc/kernel/misc.o:(.text+0x20) in archive > built-in.a > > The BFD linker disables this by default (though it's configurable in > current versions). LLD enables this by default. So we add the flag to > keep LLD from emitting the error. > > Signed-off-by: Bill Wendling <mo...@google.com>
Link: https://github.com/ClangBuiltLinux/linux/issues/811 Reported-by: Itaru Kitayama <itaru.kitay...@riken.jp> Reviewed-by: Nick Desaulniers <ndesaulni...@google.com> > > --- > The output of the "get_maintainer.pl" run just in case no one believes me. :-) LOL! > > $ ./scripts/get_maintainer.pl arch/powerpc/Makefile > Michael Ellerman <m...@ellerman.id.au> (supporter:LINUX FOR POWERPC (32-BIT > AND 64-BIT)) > Benjamin Herrenschmidt <b...@kernel.crashing.org> (reviewer:LINUX FOR POWERPC > (32-BIT AND 64-BIT)) > Paul Mackerras <pau...@samba.org> (reviewer:LINUX FOR POWERPC (32-BIT AND > 64-BIT)) > Nathan Chancellor <nat...@kernel.org> (supporter:CLANG/LLVM BUILD SUPPORT) > Nick Desaulniers <ndesaulni...@google.com> (supporter:CLANG/LLVM BUILD > SUPPORT) > linuxppc-dev@lists.ozlabs.org (open list:LINUX FOR POWERPC (32-BIT AND > 64-BIT)) > linux-ker...@vger.kernel.org (open list) > clang-built-li...@googlegroups.com (open list:CLANG/LLVM BUILD SUPPORT) > --- > arch/powerpc/Makefile | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile > index 6505d66f1193..17a9fbf9b789 100644 > --- a/arch/powerpc/Makefile > +++ b/arch/powerpc/Makefile > @@ -122,6 +122,7 @@ endif > > LDFLAGS_vmlinux-y := -Bstatic > LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) := -pie > +LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) += -z notext > LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y) > > ifdef CONFIG_PPC64 > -- > 2.33.0.rc1.237.g0d66db33f3-goog > -- Thanks, ~Nick Desaulniers
