Re: [PATCH 00/03][RFC] Reusable UIO Platform Driver

From: Paul Mundt
Date: Wed May 21 2008 - 03:51:58 EST

On Wed, May 21, 2008 at 08:49:38AM +0200, Uwe Kleine-K?nig wrote:
> Magnus Damm wrote:
> > Extending uio_pdrv driver with a chunk of physically
> > contiguous memory isn't a big deal though.
> I wonder how you use that memory. Isn't it just some kind of shared
> memory? If so, why not use normal shared memory? Do you really need
> that?
Physically contiguous memory is a real requirement, especially for DMA.
I'm not sure what's confusing about that?
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