Re:Programmer's critique of missing structure of operating s...
by jcranmer on Wednesday February 19, 2020 @09:14AM
(#22365545)
> Given a program supporting 16 bit address spaces from the 1970s, you can load it into a modern x86 OS today and it works.
Actually, it doesn't. It is extremely hard to properly return to 16-bit userspace code from a 64-bit kernel, so Windows removed support for it entirely, and it's not enabled by default on Linux.
Actually, it doesn't. It is extremely hard to properly return to 16-bit userspace code from a 64-bit kernel, so Windows removed support for it entirely, and it's not enabled by default on Linux.