Am Fri, 15 Oct 1999 schrieben Sie:
Christian Stueble <stueble@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. I think Fiasco/L4 uses memory mapped I/O, not separated I/O?
Chris -- -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Christian Stueble............stueble@ls6.cs.uni-dortmund.de PubKey[BF7104F5].......fp=8678C5D3CAD9CD8C F1DDB8EC202F116A To be or not to be is true... (apocrypha of George Boole) -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-