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SubjectRe: I/O permissions for V86 tasks (Enhanced V86 Mode)?
Date
> bitmap having a fixed size.  Not having the Intel docs in front of me
> at the moment I can't remember whether that is enforced by the processor
> but I suspect that it is. All the stuff after the IO bitmap is purely

It is but....

> for Linux's benefit and not used by the processor. Now fortunately if
> you can fix that then that's basically all there is to be fixed, but it
> seems like a biggie.

That depends - why not put the task structure at the other end, after all
the Linux bits. Now you can just extend it ?

> Besides, that will only work on Intel Pentiums and I guess you want to
> support 486 too, not to mention other manufacturers who may or may not
> have an EVM86 mode.

Later 486's have it


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