On Wed, Dec 05, 2018 at 08:37:05AM +0100, Ard Biesheuvel wrote: > On Wed, 5 Dec 2018 at 02:42, Nathan Chancellor <natechancel...@gmail.com> > wrote: > > > > This flag is not supported by lld: > > > > ld.lld: error: unknown argument: --pic-veneer > > > > Signed-off-by: Nathan Chancellor <natechancel...@gmail.com> > > Hi Nate, > > Does this mean ld.lld is guaranteed to produce position independent > veneers if you build kernels that are bigger than the typical range of > a relative branch? >
Hi Ard, Honestly, I'm not quite sure. I saw your commit that introduced this flag and I wasn't quite sure what to make of it for lld. What configuration would I use to verify and what would I check for? Additionally, I have filed an LLVM bug for the lld developers to check and see if this is a flag they should support: https://bugs.llvm.org/show_bug.cgi?id=39886 Thanks for the quick reply, Nathan > > --- > > arch/arm/Makefile | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/arch/arm/Makefile b/arch/arm/Makefile > > index e2a0baf36766..4fab2aa29570 100644 > > --- a/arch/arm/Makefile > > +++ b/arch/arm/Makefile > > @@ -10,7 +10,7 @@ > > # > > # Copyright (C) 1995-2001 by Russell King > > > > -LDFLAGS_vmlinux := --no-undefined -X --pic-veneer > > +LDFLAGS_vmlinux := --no-undefined -X $(call ld-option,--pic-veneer) > > ifeq ($(CONFIG_CPU_ENDIAN_BE8),y) > > LDFLAGS_vmlinux += --be8 > > KBUILD_LDFLAGS_MODULE += --be8 > > -- > > 2.20.0.rc1 > >
