For years, Arm64 was the platform people talked about as a future bet. It was useful in embedded systems, interesting in research, and easy to dismiss as “not the main thing.” That era is over. In a conversation between Dave Neary, Director of Developer Relations at Ampere Computing, and Greg Kroah-Hartman, Linux stable kernel maintainer and long-time kernel developer, the message is clear: Arm64 has become mainstream.