oh and they also have an entire second set of instructions on it. VIA at one point tried to combine x86 and their own architecture and there are undocumented op codes that let you flip .. and they can be called in user-mode allowing a regular user application to get ring-0/protected mode access .. and these chips are embedded into point-of-sales devices and kiosks .. and it's a hardware issue and there's no fix 🤣 (it was covered at DEFCON a few years back)