On Sat, Jun 29, 2013 at 12:23 AM, Ben Widawsky <ben at bwidawsk.net> wrote: > 2. echo 2 > /sys/kernel/debug/dri/0/i915_debug_flags > Unbind all buffers synchronously, so any batch which has bad code will fault > every time and not get lucky by hitting a buffer it bound. This will not catch > cases where it accidentally reads/writes someone else's buffer. We already have this as the drop_caches debugfs interface. Chris used it to reproduce the 3.7 reloc-tree regression, the only downside is that no one ever got around to write the respective i-g-t ... :( -Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch