Messages in this thread | | | Subject | Re: AGP & non-root mmap calls: "lending" priviledges to a client | Date | Mon, 19 Jul 1999 14:39:12 +0100 (BST) | From | Alan Cox <> |
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> > For example a client could open a file and pass the handle to a server to > > print. In your case you could open /dev/mem and pass it to a client. > > Arl. You know I have programmed with UNIX for quite a while, but never > ran across this one. Thanx for the hint.
Its in BSD >= 4.2 and System 5 boxes with streams. Its handy.
One portability gotcha to beware of: Always send at least one byte of data with the control message
> Hmmm ... As I said before, we have already a working, complete and > tested driver and you like to pass that over to the freeware
Excellent
> MTRR stuff and so on. There are a couple of neat tricks in it, that > work around a few problems in both graphics chips as well as > motherboard chips. After supporting now half a dozen graphics chip > families for HW 3D and AGP you realize that things don't always work > as the databooks say ;-)
Oh I can believe that. All too easily.
> Who is the person to send a driver like this to ?
Jeff Hartmann <slicer@ionet.net> is the guy leading the current AGP work so the obvious one. Can you cc me a copy
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