On Sat, 31 Mar 2007, Loic Hoguin wrote:
>> If anyone gets to try the new drm code on amd64, please let me know
>> how it goes for you. I'm trying to rule out any problems with my X
>> server, etc.
>> It's probably some 64-bit issue, but it would be helpful to know if
>> this problem is specific to me or not.
>
> I just tried it, it compiles, initialize, but fail when X tries to
> initialize the screen. It is modular-xorg.

Can you try the following patch (apply in sys/dev/drm):

   http://www.invisible.ca/~jmcneill/netbsd/drm-busdma.diff

Cheers,
Jared