Your first link comes up as blank for me (documentation-service.arm.com returns 404 for me). But it's worth pointing out that X4, A720 and A520 support asymmet

Your first link comes up as blank for me (documentation-service.arm.com returns 404 for me). But it's worth pointing out that X4, A720 and A520 support asymmetric MTE [1] - just the A720 page you linked to fails to mention it. [1] https://www.arm.com/blogs/blueprint/memory-safety-arm-memory-tagging-extension#h-what-is-arm-s-latest-mte-development https://www.arm.com/blogs/blueprint/memory-safety-arm-memory...