[Bug 86095] [ILK]igt/kms_mmio_vs_cs_flip/setplane_vs_cs_flip sporadically causes system hang

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=86095

--- Comment #4 from lu hua <huax.lu at intel.com> ---
Created attachment 109979
  --> https://bugs.freedesktop.org/attachment.cgi?id=109979&action=edit
dmesg(patch)

(In reply to Daniel Vetter from comment #3)
> (In reply to Daniel Vetter from comment #1)
> > How bad a hang? Anything over netconsole or serial console?
> 
> Please answer this question, too.
> 
> Also please test this patch: http://patchwork.freedesktop.org/patch/37389/

Test this patch 10 cycles, the hang doesn't exist.
Also test the latest drm-intel-fixes kernel 10 cycles, I can't reproduce the
hang. I am not sure "how bad a hang".

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