Just installed Kernel 3.12-rc4 on the test system, and I can confirm – as expected – that it does include the ‘EXPORT_SYMBOL‘ fix, which allows the NVIDIA 3.12 patch to work correctly.    Details of changes are here:    https://lkml.org/lkml/2013/10/6/148

Patched NVIDIA drivers 331.13 and 319.60 both compile OK

Robert Gadsdon.   October 7, 2013