[edk2-devel] [PATCH 1/2] ArmPkg/AsmMacroIoLibV8: Introduce ASM_FUNC_ALIGN()

[Marvin Häuser]

> On 17. Apr 2023, at 23:18, Ard Biesheuvel <ardb at kernel.org> wrote:
> 
> Agree with all of this.
> 
> And thanks for tracking this down - must not have been fun :-)

No worries - it wasn’t. :) It was mere luck Vitaly discovered early it was an issue that triggered based on the binary layout rather than a bug in the mapping code itself…

Speaking of not fun to track down, I initially wanted to add ASSERTs (yes, runtime :( ) to check the alignment guarantee is actually met. Leif basically declined any form of regression-testing at runtime. Do you happen to have a simple(!) idea for how it could be checked at build-time? (It’s less about “which commands do I run?” and more about integration with the build process / BaseTools, cross-OS compatibility, etc.)

Thanks!

Best regards,
Marvin


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