[Bug 90203] [gen3] Xorg GPU hang with 4.0 kernel

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90203

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Xorg crash with 4.0 kernel  |[gen3] Xorg GPU hang with
                   |                            |4.0 kernel

--- Comment #1 from Chris Wilson <chris at chris-wilson.co.uk> ---
The crash occurs on the instruction to set a colour buffer (with Y-tiling) that
is currently being fenced with X.  It is used earlier in the batch as a Y-tiled
texture. The hang could be at the pipeline stall at the end of that sampling -
hard to say for sure. At any rate, that we have a dirty fence register seems to
be the most likely explanation.

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