[Bug 89644] [BSW/SKL]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 #6 from Jairo Miramontes <jairo.daniel.miramontes.caton at intel.com> ---
I am not seeing this happening on SKL, not getting those hangcheck messages
with the following configuration:

Result: 

IGT-Version: 1.13-g2db78a4 (x86_64) (Linux: 4.4.0-rc3-testing+ x86_64)
Test suceeded, cleanup up - this might take a while.
SUCCESS (0.019s)

[   63.239493] gem_cs_prefetch: executing
[   63.239622] [drm:i915_gem_open]
[   63.240372] [drm:i915_gem_open]
[   63.258040] gem_cs_prefetch (1110): drop_caches: 3
[   63.258526] gem_cs_prefetch: exiting, ret=0
[   63.259002] [drm:skl_update_scaler_plane] Updating scaler for [PLANE:18]
scaler_user index 0.0
[   63.259004] [drm:skl_update_scaler_plane] Updating scaler for [PLANE:23]
scaler_user index 1.3



==Hardware==
Platform: SKY LAKE Y A0
CPU: Intel(R) Core(TM) m3-6Y30 CPU @ 0.8GHz 4MB (family: 6, model: 78
stepping: 3)
MCP: SKL-Y  D1  2+2 (ou ULX-D1)
QDF: QYV3
CPU: SKL D0
Chipset PCH: Sunrise Point LP C1
CRB: SKY LAKE Y LPDDR3 RVP3 CRB FAB2
Reworks : All Mandatories + FBS02 & FBS03, O-06 Software Linux distribution:
Ubuntu 14.04 LTS 64 bits
BIOS: 93.2
ME FW: 11.0.0.1149
Ksc (EC FW): 1.15



==Software==
Linux distribution: Ubuntu 15.10 64 bits 
BIOS : 104.1
kernel  drm-intel-nightly: 2015y-12m-04d-16h-35m-07s UTC integration manifest
commit 91587c722c28c4116dedbfbf08aa874377bc76f8
cairo: (HEAD, tag: 1.14.6) 9d3191da6fae7dfd914c3516d6ba369c9ba1a576 from
git://git.freedesktop.org/git/cairo
drm: (HEAD, tag: libdrm-2.4.66) b38a4b2326c1be5702f5cb73a53c0ed74c12d510 from
git://git.freedesktop.org/git/mesa/drm
intel-driver: (HEAD, tag: 1.6.2) 683edeedfdfd769807c18ed3797223f82b7aa0cc from
git://git.freedesktop.org/git/vaapi/intel-driver
libva: (HEAD, tag: libva-1.6.2) 304bc13e244f9d5e185a0d8a87fcf3a3eb5a8bd8 from
git://git.freedesktop.org/git/vaapi/libva
mesa: (HEAD, tag: mesa-11.0.8) 261daab6b4f7a1cff143bebcd632ad5a2cdafa74 from
git://git.freedesktop.org/git/mesa/mesa
xf86-video-intel: (HEAD, tag: 2.99.917)
8e987511f0f190115e2587a94922b766d4f8719af rom
git://git.freedesktop.org/git/xorg/driver/xf86-video-intel
xserver: (HEAD, tag: xorg-server-1.18.0)
43fb888bd01cf9d3d277e77a52a3d0c93ccff8bd from
git://git.freedesktop.org/git/xorg/xserver

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