Re: How to visit physical memory above 4G?

[Rik van Riel]

On Thu, 2 Aug 2001, Terry Lambert wrote:

> Correct me if I'm wrong, and 64 bit PCI cards can in fact
> DMA at offsets above 4G, in the physical address space...

They can.  And for 32 bit PCI cards you simply use
bounce buffers in the same way you handle ISA bounce
buffers.

It's ugly, but if you have a huge dataset it's better
than getting the data from disk.

Rik
--
Virtual memory is like a game you can't win;
However, without VM there's truly nothing to lose...

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