Linus Torvalds, the father of Linux, has once again openly criticized the x86 microarchitecture class, dismissing it as "garbage."\n\nIn a discussion regarding updates and additions to the new Linux KConfig build, Torvalds expressed his frustration and disapproval of the AMD64 or x86_64 architecture feature levels.\n\n"Let's not delve into the x86-64 microarchitecture level. It's a senseless concept. The entire "v2", "v3", "v4", etc. naming convention seems to be some absurd glibc artifact that should be eradicated. I have no idea who conceived the "microarchitecture level" nonsense, but as far as I'm concerned, it's completely unofficial and a fundamentally incorrect approach."\n\nThe x86-64 microarchitecture levels were first proposed by Florian Weimer of Red Hat in 2020, initially as "Levels A, B, and C", with the subsequent addition of "Level D."\n\nLinus Torvalds argues that these architectural levels complicate rather than simplify matters. Attempting to linearize the development of hardware instructions and functions is not a practical method.\n\nTorvalds brings up a valid point, noting that certain CPU instructions, like AVX, might appear in specific processor families only to vanish later.\n\nA recent example of this is Intel's introduction of AVX-512 in the 11th generation Rocket Lake, followed by the instruction's removal in subsequent processor generations.\n\n\n