[Bug 89644] [BSW]igt/gem_cs_prefetch causes *ERROR* Hangcheck timer elapsed... render ring idle

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89644

--- Comment #1 from ye.tian <yex.tian at intel.com> ---
This issue stilll exist the latest kernel(nightly).
output:
--------------
IGT-Version: 1.10-g4d2577e (x86_64) (Linux:
4.0.0-rc5_drm-intel-nightly_d85122_20150326+ x86_64)
gem_cs_prefetch: 100%
Test suceeded, cleanup up - this might take a while.
SUCCESS (80.825s)

<3>[ 1599.451289] [drm:i915_hangcheck_elapsed [i915]] *ERROR* Hangcheck timer
elapsed... render ring idle

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