On Thu, Feb 20, 2020 at 06:32:39PM +0100, Ard Biesheuvel wrote:
> Another thing I wondered was whether we really need the .reloc
> section. We don't have one on ARM, and it works fine with the existing
> EDK2 loader.
> Peter: any idea whether the issue with .reloc you pointed out to me
> the other day still exists in EDK2 today?
commit 743628e868c5 ("x86, efi stub: Add .reloc section back into
image") says that
Some UEFI firmware will not load a .efi with a .reloc section
with a size of 0.
Is that the issue you're refering to? It is a bit odd, since we actually
leave base relocation table at a size of zero with an RVA of zero, so it
shouldn't even look at the .reloc section according to the spec. At
least current EKD2 code doesn't seem to -- I think it would even work if
you specify fewer tables than 6 so that the base relocation table is
missing altogether.
