http://bugs.freedesktop.org/show_bug.cgi?id=26686
--- Comment #3 from Ruslan <b7.10110...@gmail.com> 2010-02-21 14:06:28 PST ---
(In reply to comment #2)
> Can you bisect the commit that broke it for you?
OK, i did it using WINE bisect tutorial, and this is the final output:
4f0f871730b76730ca58209181d16725b0c40184 is first bad commit
commit 4f0f871730b76730ca58209181d16725b0c40184
Author: Chris Wilson <ch...@chris-wilson.co.uk>
Date: Wed Feb 10 09:45:13 2010 +0000
intel: Handle resetting of input params after EINTR during SET_TILING
The SET_TILING is pernicious in that it overwrites the input arguments
following an error in order to report the current tiling state of the
buffer. This caught us by surprise as we then fed those arguments back
into to the ioctl unmodified following an EINTR and so the kernel then
reported success for the no-op. We interpreted this success as meaning
that the tiling on the buffer had changed so updated our state and
started using the buffer incorrectly in the new tiled/untiled manner.
This lead to all sorts of random corruption and GPU hangs, even though
the batch buffers would look sane (when the GPU had not wandered off
into forbidden territory).
References:
Bug 25475 - [i915] Xorg crash / Execbuf while wedged
http://bugs.freedesktop.org/show_bug.cgi?id=25475
Bug 25554 - i830_uxa_prepare_access: gtt bo map failed: Input/output
error
http://bugs.freedesktop.org/show_bug.cgi?id=25554
(And probably every other weird bug in the last few months.)
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
:040000 040000 0af4c96adb20514daff1251ec9fb5b542e8092f5
411ace5da42864017f0132efeb47c96778eca642 M intel
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