[Bug 40221] NI / Cayman: Frequent pixmap corruption on >=3.0 kernels

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=40221

--- Comment #33 from Nicos Gollan <gtdev at spearhead.de> 2011-10-24 12:34:11 UTC ---
I tried:

* drm/radeon/kms/cayman/blit: specify CP_COHER_CNTL2 with surface_sync
* drm/radeon/kms: rework texture cache flush in r6xx+ blit code

which sadly didn't help (if anything, the corruption got more fine-grained). In
those builds I didn't have the older patch from attachment 50461 though, I'll
try that soon without the workaround.

As an aside, I was running attachment 52699 while building that, and it froze
the UI solid. The system was still working fine, just the GPU had stopped cold
from the looks of it.

Right now, I'm running Jerome Glisse's workaround over those two, and so far it
seems to work well enough for what I need.

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