From: Steffen Seeger <seeger@physik.tu-chemnitz.de>
  To  : ggi-develop@eskimo.com
  Date: Mon, 20 Jul 1998 13:23:16 +0200 (MEST)

Re: DMA BLTs

> On Mon, 20 Jul 1998, Steffen Seeger wrote:
> > > 1) If a userspace process passes a pointer to blit from/to,
> > > /dev/graphN can tell whether access to the card is focused on
> > > that app, but can/how can the kernel identify the calling process and
> > > verify the physical region is valid and all permissions are kosher?
> > Using the verify_area() call. 
> 
> Hasnt this changed somewhat since 2.1.8?
> 
> -Dan

IIRC the article from the EXPO98 proceedings about kernel hacking states
this as the recommended procedure. How should it be done then?

			Steffen

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