We kinda already had this with the old segmented memory model. That AMD mostly dropped support for it in x86_64 should tell you something. https://en.wikipedia

We kinda already had this with the old segmented memory model. That AMD mostly dropped support for it in x86_64 should tell you something. https://en.wikipedia.org/wiki/X86_memory_segmentation https://en.wikipedia.org/wiki/X86_memory_segmentation