Tried installing 343.36 and 346.22 drivers on linux 3.19-rc1. Besides errors due to f_dentry changes http://goo.gl/Xy3sWa (just manually replace to fix), I get the following error.
FATAL: modpost: GPL-incompatible module nvidia.ko uses GPL-only symbol ‘__cachemode2pte_tbl’
Found this commit http://goo.gl/VQsQKv, sure enough ‘__cachemode2pte_tbl’ is exported GPL only. Easily circumvented with a kernel patch but since driver is proprietary I don’t think there’s much we can do except wait for nvidia to fix.