Reply to post: Re: This seems a very level-headed and straight forward discussion

Linux boss Torvalds: Don't talk to me about containers and other buzzwords

BinkyTheMagicPaperclip

Re: This seems a very level-headed and straight forward discussion

x64 doesn't have as many levels as x86. OS/2 used ring 2 in a limited number of cases, but generally it's not used. When XFree86 was ported to OS/2, and needed to do fast I/O from user level (ring 3), the IOPL 16 bit ring 2 DLL feature was found to be appallingly slow, so a special device driver was used instead.

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