https://bugs.freedesktop.org/show_bug.cgi?id=84627
Michel Dänzer michel@daenzer.net changed:
What |Removed |Added ---------------------------------------------------------------------------- Attachment #107452|0 |1 is obsolete| |
--- Comment #15 from Michel Dänzer michel@daenzer.net --- Created attachment 107655 --> https://bugs.freedesktop.org/attachment.cgi?id=107655&action=edit drm/radeon: Ignore RADEON_GEM_GTT_WC on Kabini
There seems to be a general problem with write-combined CPU mappings of GTT on Kabini. We previously disabled write-combined mappings of the ring buffers again because other users reported ring test failures on Kabini with that, but from this report it looks like the problem runs deeper.
This kernel patch should work around it for now.