Question about IO-fpages

[Jean Wolter]

Christian Stueble <stueble at amaunet.cs.uni-dortmund.de> writes:

> > It is said that always the complete IO space should be specified as
> > receive fpage, why?
> ?

With flexpages you can map a page to an arbitrary address by
specifying an according receive flex page.

You are not allowed to do this with an IO-area. If someone grants you
the right to access port X you can't change this to port Y by
specifying a receive window in you IO address space. Therefore you
have to specify your whole IO address space so that IO ports are always
mapped one to one.

Jean
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