[edk2-devel] [RFC PATCH 2/3] MdeModulePkg: Enable forward edge CFI in mem attributes table

[Ard Biesheuvel]

On Fri, 3 Feb 2023 at 09:25, Marvin Häuser <mhaeuser at posteo.de> wrote:
>
> Hi Ard,
>
> Short story: No, TE is not a concern for RT drivers, at least not upstream [1].
>
> Long story: Even if a downstream added support for RT relocation itself, TE images are loaded misaligned by DxeCore, because it lacks a (terrible) workaround as done in PeiCore [2]. It doesn’t look like anyone tried to use them in DXE at all.
>
> Best regards,
> Marvin
>
> [1] https://github.com/tianocore/edk2/blob/11f0014c0e3046e3762eac420b760091d0cdc063/MdePkg/Library/BasePeCoffLib/BasePeCoff.c#L1759
>
> [2] https://github.com/tianocore/edk2/blob/11f0014c0e3046e3762eac420b760091d0cdc063/MdeModulePkg/Core/Pei/Image/Image.c#L412

Ah thanks for digging that up.

So all the more reason to add this to the PE/COFF spec rather than
anywhere else.


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