On Sat, Dec 22, 2001 at 02:30:14AM +0100, Alexander Stohr wrote:
> The GART is the paging unit of the AGP system.
> 
> It deals nicely with fragmented chunks of page sized
> memory chunks. So you only need some sort of memory
> allocation and a way to determine eachs pages physical
> adress to use it for those GART purposes.

thats what I figured. But then what is the point of returning the 
starting physical address to the user-space caller?

If the user-space asks for 1 meg of memory==256 pages,
and gets the physical address of the first page back, but
all the oteher 255 pages are non-physically contiguous... then whats the
point of returning the physical address of that first block?


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