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Re: recommended video card?

On Mon, Jun 07, 2010 at 02:12:06PM -0400, Thor Lancelot Simon wrote:
> The only safe way is for the kernel to mediate all access to any device
> with a DMA engine.  But that is not the way modern X servers want to
> do it (it is how many of the early ones worked).

Actually, that is exactly what DRM is supposed to provide. Also keep in
mind that AGP like bridges provide an IO-MMU which is used to limit the
visibility of pages to whatever the kernel allows.


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