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Here are a few small fixes for issues we found while implementing support for GM20B. The first two are specific to Tegra/GK20A, but the last 3 patches may have a broader (hopefully beneficial) effect. Note that the newly introduced gf100_gr_wait_idle() function on patch 5/5 is exported on purpose. GK20A and GM20B drivers will soon make use of it. Ben, since you seemed to like these changes, a

Hi there, Resending these now that they've had some more polish and testing, and I heard that Ben's vacation is over :-) These patches work as a starting point for more explicit error mechanisms and better robustness. At the moment, when a job hangs or faults, it seems that nouveau doesn't quite know how to handle the situation and often results in a hang. Some of these situations