If you are wondering "why drop support for the 386?," the diff for the removal of 386 support from the Linux kernel is a good read: https://git.kernel.org/pub/

If you are wondering "why drop support for the 386?," the diff for the removal of 386 support from the Linux kernel is a good read: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=743aa456c1834f76982af44e8b71d1a0b2a82e21 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/lin... tl;dr atomic instructions XADD and CMPXCHG, and serious bugs in many 386 CPUs. Also BSWAP was added in the 486 and speeds some things up a lot.