[Bug 81858] [BYT/BDW/BSW Regression]igt/pm_rps some subcases fail and cause " [drm:i915_context_is_banned] *ERROR* gpu hanging too fast, banning!"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=81858

Guo Jinxian <jinxianx.guo at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #7 from Guo Jinxian <jinxianx.guo at intel.com> ---
(In reply to comment #6)
> (In reply to comment #4)
> > This failure is able to reproduce while run tests below:
> > igt/gem_partial_pwrite_pread/reads-snoop
> > igt/gem_partial_pwrite_pread/write-snoop
> > igt/gem_partial_pwrite_pread/writes-after-reads-snoop
> > igt/gem_pread_after_blit/interruptible-snoop
> > igt/gem_pread_after_blit/normal-snoop
> > 
> > root at x-bytm02:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests#
> > ./gem_partial_pwrite_pread --run-subtest reads-snoop
> > IGT-Version: 1.8-g107151c (x86_64) (Linux:
> > 3.17.0-rc4_drm-intel-nightly_72faa6_20140911+ x86_64)
> > checking partial reads
> > Test assertion failure function intel_batchbuffer_flush_on_ring, file
> > intel_batchbuffer.c:180:
> > Failed assertion: (drm_intel_gem_bo_context_exec(batch->bo, ctx, used,
> > ring)) == 0
> > Last errno: 22, Invalid argument
> > Subtest reads-snoop: FAIL (0.248s)
> > root at x-bytm02:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests#
> > ./gem_pread_after_blit --run-subtest interruptible-snoop
> > IGT-Version: 1.8-g107151c (x86_64) (Linux:
> > 3.17.0-rc4_drm-intel-nightly_72faa6_20140911+ x86_64)
> > Test assertion failure function intel_batchbuffer_flush_on_ring, file
> > intel_batchbuffer.c:180:
> > Failed assertion: (drm_intel_gem_bo_context_exec(batch->bo, ctx, used,
> > ring)) == 0
> > Last errno: 22, Invalid argument
> > Subtest interruptible-snoop: FAIL (0.002s)
> 
> That's full-ppgtt fallout: http://patchwork.freedesktop.org/patch/33361/

The failure unable to reproduce on latest
-nightly(43df30da20447e2856b2761215ff274886a9f931) or with this patch. but
another error occurs below. which tracked by Bug 83915.

[root at x-bsw01 tests]# ./pm_rps --run-subtest reset
IGT-Version: 1.8-g137877f (x86_64) (Linux: 3.17.0-rc5_kcloud_b5ed37_20140916+
x86_64)
Test assertion failure function idle_check, file pm_rps.c:408:
Failed assertion: freqs[CUR] == freqs[MIN]
error: 480 != 160
Subtest reset: FAIL (65.632s)
[root at x-bsw01 tests]# dmesg -r|egrep "<[1-4]>"|grep drm

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