From: Andrew Apted <ajapted@netspace.net.au>
  To  : ggi-develop@eskimo.com
  Date: Mon, 20 Jul 1998 22:56:18 +1000

Re: DMA BLTs

Steffen writes:

>  You need to find the vm_area_struct that contains the address, then
>  look up the mm_struct in there. (Basically). Dunno if virt_to_phys does this
>  already.

No virt_to_phys() doesn't do anything special, it is just a dumb macro.
Take a look at /usr/src/linux/include/asm-i386/io.h if you're interested.

Cheers,
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  Andrew Apted   <andrew@ggi-project.org>       \/