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Zen and the art of microcode hacking

Now that we have examined the vulnerability that enables arbitrary microcode patches to be installed on all (un-patched) Zen 1 through Zen 4 CPUs, let's discuss how you can use and expand our tools to author your own patches. We have been working on developing a collection of tools combined into a single project we’re calling zentool. The long-term goal is to provide

https://www.osnews.com/story/141867/zen-and-the-art-of-microcode-hacking/

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