Re: [PATCH 7/9] arm64/build: Warn on orphan section placement

From: Will Deacon
Date: Tue Mar 17 2020 - 17:56:22 EST


On Thu, Feb 27, 2020 at 04:22:42PM -0800, Kees Cook wrote:
> We don't want to depend on the linker's orphan section placement
> heuristics as these can vary between linkers, and may change between
> versions. All sections need to be explicitly named in the linker
> script.
>
> Explicitly include debug sections when they're present. Add .eh_frame*
> to discard as it seems that these are still generated even though
> -fno-asynchronous-unwind-tables is being specified. Add .plt and
> .data.rel.ro to discards as they are not actually used. Add .got.plt
> to the image as it does appear to be mapped near .data. Finally enable
> orphan section warnings.

Hmm, I don't understand what .got.plt is doing here. Please can you
elaborate?

Will