Hi! Looks like it is possible to patch CPU microcode to replace RDRAND istruction: [Zen and the Art of Microcode Hacking](https://bughunters.google.com/blog/5424842357473280/zen-and-the-art-of-microcode-hacking#:~:text=Replace%20the%20donor%20patch%20contents%20with%20the%20necessary%20changes%20to%20replace%20RDRAND%E2%80%99s%20implementation.)
Hi!
Looks like it is possible to patch CPU microcode to replace RDRAND istruction: Zen and the Art of Microcode Hacking