Re: [RFC PATCH 1/2] x86/relocs: Improve diagnostic for rejected absolute references

[Ard Biesheuvel]

On Mon, 27 Jan 2025 at 17:57, Linus Torvalds
<torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
>
> On Mon, 27 Jan 2025 at 03:43, Ard Biesheuvel <ardb+git@xxxxxxxxxx> wrote:
> >
> >   Absolute reference to symbol '.rodata+0x180' detected in .head.text (0xffffffff820cb4ba).
>
> Do we have any symbol name lookup logic anywhere?
>

I can look into that. In this particular case, though, there is no
symbol to look up as it is a anonymous jump table generated by the
compiler. And the function name would be inaccurate too, as
snp_cpuid_postprocess() got inlined into its caller. But I guess with
the right DWARF data, at least the call site could be narrowed down a
bit better.