allocating uncachable memory

[Dan Malek]

Roman Zippel wrote:

> xxx_to_virt() is completly impossible (with a decent performance) and IMO
> shouldn't be needed.

Well......there are many devices that perform DMA and must know the
physical address that is often stored in some kind of device descriptor.
I have written drivers that convert back and forth to get this
information.  You would have to keep the address mappings in the
driver somehow.

> Usually one simply posts a patch and gets flamed to death,....

Yeah, and I am usually the one doing the flaming, because I won't
check anything into a kernel tree that doesn't work.



	-- Dan

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