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@Suiseiseki Yeah, that's Richard Stallman's version of the software / not-software distinction, and while it's the only way to be a free software zealot while still using commodity hardware, it's not useful.

Nobody has reverse-engineered a modern x86 chip from looking at the circuitry. All the high-level behaviour of an x86 chip is controlled by microcode: the CPU comes with microcode written by Intel, and there are precious few threat models where it makes sense not to use microcode updates.