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------- Additional Comments From [EMAIL PROTECTED]  2005-04-09 06:52 -------
In comment #11 Paul Mackerras writes:

> I haven't changed the ABI, either for 32-bit or for 64-bit processes.  I have
> used this successfully on a G5 powermac running a ppc64 Linux kernel, using
> unmodified 32-bit X server and client binaries.

Unfortunately without a change in the ABI it is not possible to run 32bit
DRI clients on 64 bit servers (or vice versa). The problem is that data
structures shared between kernel, Xserver and clients have different sizes.
However it is conceivable that users may want to run 32 and 64 applications on
the same Xserver. 
With the reight defines the ioctl converters are very boiler plate.
I'm going to attach an updated version of my patch. Presently I have support to
the MGA, Radeon and Rage128 driver. 
The changes to DRM should be backward compatible so that unpatched Xservers and
DRI libraries continue to work.
Xserver, libGL and DRI drivers need to be updated together however.          
     
     
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