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SubjectRe: Prefered method to map PCI memory into userspace.
"David S. Miller" <> writes:

> On 27 Sep 2003 00:03:42 +0200
> Andi Kleen <> wrote:
>> mmap on /dev/mem
>> PIO cannot be done on memory, for that you have to use iopl()
>> or ioperm() to get access to the port and then issue the PIO
>> instructions yourself
> Platform dependant, mmap on /dev/mem doesn't work on many systems.

Just curious - what does the X server use on these many systems then ?

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