If I understand correctly, accesses to address ranges mapped to the GPU have to be aligned on Apple Silicon due to the PCie controller requiring nGnRE mapping m

If I understand correctly, accesses to address ranges mapped to the GPU have to be aligned on Apple Silicon due to the PCie controller requiring nGnRE mapping mode for external devices. There's a proof-of-concept AMD GPU driver patch for Linux that kinda makes this work but it's an incredible hack, the performance isn't great and applications still need to be reviewed and patched.