[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 #12 from Simon Farnsworth <simon.farnsworth at onelan.co.uk> 2011-11-28 06:00:43 PST ---
Applying some debugger knowledge to the stack traces tells me that I'm stalled
in evergreen_page_flip, in the infinite loop commented as "Wait for
update_pending to go high".

It looks like the chip never asserts EVERGREEN_GRPH_SURFACE_UPDATE_PENDING,
which results in that loop becoming infinite. I then lose my machine, because
RCU is waiting for the CPU that's looping to become idle.

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