[Bug 43191] Radeons needs 2D (MACRO) color tiling for optimal performance

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=43191

--- Comment #14 from Simon Farnsworth <simon.farnsworth at onelan.co.uk> 2011-11-28 09:02:14 PST ---
I've spent the day digging to understand this, so I might be completely and
utterly wrong, but, if I understand correctly, I've got the following:

drivers/gpu/drm/radeon/evergreen_cs.c validates command streams coming from
userspace, aiming to reject ones that will obviously lock up the GPU.

Something in my userspace is sending a command stream that triggers a lockup,
and the validator isn't rejecting it. I need to investigate the validator, and
make sure it's OK.

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