Re: I/O permissions for V86 tasks (Enhanced V86 Mode)?
Ian Collier (imc@comlab.ox.ac.uk)
Tue, 21 Jul 1998 14:11:34 +0100 (BST)
On Sat, 18 Jul 1998 00:59:03 +0200 (MET DST), MOLNAR Ingo said:
> the problem is that the ->iomap pointer within the TSS is only 16 bits :(
> This means we'd have to allocate the bitmap within 64k of the address of
> the (already allocated) task structure. It's highly unlikely that this can
> be done cleanly :( Maybe we could 'relocate' the task, but this is way too
> much work and complexity, as all possible data structures that somehow
> might reference this task have to be fixed up.
This might seem like a silly question, but if the task is currently running
then what are the data structures which might reference its TSS? Do these
things also have to be cleaned up when the task calls exit()?
imc
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