On 18 May 2017 at 10:09, Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx> wrote: > Clang requires the stub to be built with -fpie, or it may emit absolute > symbol references that trigger the absolute relocation detection code and > cause the build to fail. > > The remedy is to set -fpie (#3), but due to stupid ELF symbol preemption > rules that only apply to shared libraries, this will result in more rather > than fewer absolute references (i.e., GOT entries), which we have to massage > away using visibility overrides first. (#1, #2) > > Ard Biesheuvel (3): > efi/libstub: arm64: use hidden attribute for struct screen_info > reference > efi/libstub: arm64: force 'hidden' visibility for section markers > efi/libstub: arm64: set -fpie when building the EFI stub > > arch/arm64/include/asm/efi.h | 3 +++ > drivers/firmware/efi/libstub/Makefile | 2 +- > drivers/firmware/efi/libstub/arm64-stub.c | 10 +++++++++- > 3 files changed, 13 insertions(+), 2 deletions(-) > I have queued these in efi/next, with Matthias's Tested-by -- To unsubscribe from this list: send the line "unsubscribe linux-efi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
