Linux kernel version 7.1 will drop support for the Intel 80486 processor, making it impossible to build a kernel compatible with the 1989 chip. Maintainers, including Ingo Molnar, argue that the compatibility code burdens modern development. The change affects a few compatible chips from other vendors but has negligible practical impact.
Code commits indicate that Linux kernel 7.1, expected soon, will be the first version without support for Intel's 80486 processor. Introduced in 1989 and discontinued in 2007, the chip has lingered in the kernel despite replacement by Pentium processors in 1993. Ingo Molnar, a key contributor, submitted patches removing the support, noting the code's complications for ancient 32-bit CPUs used by few people today. He wrote that this 'compatibility glue' causes problems that divert developer time from other tasks. Additional removals of 486-related code will follow in later versions, according to Phoronix reports cited in the coverage from Ars Technica on April 7, 2026. The change echoes Molnar's earlier removal of 80386 support in kernel 3.8 in 2013 and aligns with Linus Torvalds' 2022 comment that there is 'zero real reason for anybody to waste one second of development effort' on 486 issues. It will also impact chips like Cyrix 5×86 and AMD Am5x86. Molnar acknowledged a 'nostalgic cost,' joking that old 386 DX33 systems from 1991 will no longer boot modern kernels: 'Sniff.' Practical effects remain minimal, as most Linux distributions demand far more resources than 486 hardware provides. Ubuntu's 26.04 LTS now requires 6GB RAM minimum, while even lightweight Tiny Core Linux recommends Pentium II with 128MB. On Tiny Core forums, user andyj compared 486 nostalgia to classic cars unfit for daily use, adding that extensions like rsyslog and MariaDB already require i586 CPUs and fail to compile for i486.