[Intel-gfx] [PATCH 8/8] drm/i915/skl: gen6+ platforms support runtime PM

[shuang.he at intel.com]

Tested-By: Intel Graphics QA PRTS (Patch Regression Test System Contact: shuang.he at intel.com)
Task id: 6301
-------------------------------------Summary-------------------------------------
Platform          Delta          drm-intel-nightly          Series Applied
PNV                                  276/276              276/276
ILK                                  302/302              302/302
SNB                                  316/316              316/316
IVB                                  264/264              264/264
BYT                 -3              227/227              224/227
BDW                                  318/318              318/318
-------------------------------------Detailed-------------------------------------
Platform  Test                                drm-intel-nightly          Series Applied
*BYT  igt at gem_dummy_reloc_loop@render      FAIL(1)PASS(18)      TIMEOUT(1)PASS(1)
 BYT  igt at gem_pipe_control_store_loop@fresh-buffer      FAIL(1)TIMEOUT(10)PASS(9)      TIMEOUT(1)PASS(1)
*BYT  igt at gem_pwrite_pread@uncached-copy-performance      FAIL(1)PASS(2)      DMESG_FAIL(1)PASS(1)
(dmesg patch applied)drm:i915_context_is_banned[i915]]*ERROR*gpu_hanging_too_fast,banning at gpu hanging too
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