[Bug 91881] regression: GPU lockups since mesa-11.0.0_rc1 on RV620 (r600) driver

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=91881

--- Comment #3 from markus gapp <markus.gapp@pr-link.at> ---
git bisect found commit 29aaab2b5f55cc6d9a84f58ce2bb8607e76a9dde as the
culprit. reverting it makes 11.0.0-rc2 work on my hw. for some reason it does
not like 
commit 29aaab2b5f55cc6d9a84f58ce2bb8607e76a9dde
Author: Grigori Goronzy <greg@chown.ath.cx>
Date:   Wed Jun 24 03:38:02 2015 +0200

    winsys/radeon: align BO size to page size

    This is the basic granularity for BO allocations. The alignment also
    helps with BO reuse by the cached bufmgr.

    This results in a huge 45% speedup in Metro 2033 Redux on my test
    system. The game relies on buffer orphaning with very small buffers
    (hundreds of bytes in size) and that did not work efficiently
    before. This change may also affect other applications and games.

    Reviewed-by: Marek Olšák <marek.olsak@amd.com>


thank you!! markus

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