Comment 414 for bug 541511

In Fedora's kernel package:
http://pkgs.fedoraproject.org/gitweb/?p=kernel.git;a=tree;h=refs/heads/f13/master;hb=f13/master

I see drm-intel-big-hammer.patch. That's a patch that improved stability somewhat, but didn't quite solve the problem. My testcase could still kill the system. It also causes slowdowns, which can be extreme in some cases.