Wow you weren't kidding about "largely undocumented". https://man7.org/linux/man-pages/man2/vm86.2.html https://man7.org/linux/man-pages/man2/vm86.2.html Would

Wow you weren't kidding about "largely undocumented". https://man7.org/linux/man-pages/man2/vm86.2.html https://man7.org/linux/man-pages/man2/vm86.2.html Would be really cool if someone contributed a proper man page, I bet it would be a fascinating read.