[Intel-gfx] [PATCH] drm/i915: Setup all page directories for gen8

[shuang.he at intel.com]

Tested-By: PRC QA PRTS (Patch Regression Test System Contact: shuang.he at intel.com)
Task id: 5884
-------------------------------------Summary-------------------------------------
Platform          Delta          drm-intel-nightly          Series Applied
PNV                 -6              278/278              272/278
ILK                 -1              308/308              307/308
SNB                 -1              284/284              283/284
IVB                                  380/380              380/380
BYT                                  294/294              294/294
HSW                                  387/387              387/387
BDW                 -1              316/316              315/316
-------------------------------------Detailed-------------------------------------
Platform  Test                                drm-intel-nightly          Series Applied
*PNV  igt_gem_fence_thrash_bo-write-verify-none      NRUN(1)PASS(7)      FAIL(1)PASS(1)
*PNV  igt_gem_fence_thrash_bo-write-verify-x      PASS(8)      FAIL(1)PASS(1)
*PNV  igt_gem_fence_thrash_bo-write-verify-y      NO_RESULT(1)PASS(7)      FAIL(1)PASS(1)
*PNV  igt_gem_userptr_blits_minor-normal-sync      PASS(5)      DMESG_WARN(1)PASS(1)
 PNV  igt_gen3_render_mixed_blits      FAIL(10)PASS(9)      FAIL(2)
 PNV  igt_gem_fence_thrash_bo-write-verify-threaded-none      FAIL(2)CRASH(5)PASS(7)      CRASH(2)
 ILK  igt_gem_unfence_active_buffers      DMESG_WARN(1)PASS(3)      DMESG_WARN(1)PASS(1)
*SNB  igt_gem_exec_params_sol-reset-not-gen7      PASS(2)      DMESG_WARN(1)PASS(1)
*BDW  igt_gem_gtt_hog      PASS(20)      DMESG_WARN(1)PASS(1)
Note: You need to pay more attention to line start with '*'