Comment 7 for bug 391768

All nvidia kernel modules need patches to compile on 2.6.31.
All need a patch to remove proc->owner which doesn't exist anymore in kernels > 2.6.30.
Some need one for agp_memory, see for example bug #393924.

nvidia-96-kernel-source needs these two patches:
http://leigh123linux.fedorapeople.org/pub/patches/nvidia-96.43.11.patch
http://launchpadlibrarian.net/28552081/drm_agp_memory-2.6.31.patch

After applying those patches the module builds and works with the 2.6.31 kernel.