[Intel-gfx] [PATCH 1/3] drm/i915/gt: Ignore stale context state upon resume

[Intel-gfx] [PATCH 1/3] drm/i915/gt: Ignore stale context state upon resume

[Chris Wilson]

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/gt/intel_lrc.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c
index 4fb70a7716e3..12f5241bf0fa 100644
--- a/drivers/gpu/drm/i915/gt/intel_lrc.c
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
@@ -2494,6 +2494,8 @@ static int execlists_context_alloc(struct intel_context *ce)
 
 static void execlists_context_reset(struct intel_context *ce)
 {
+	GEM_BUG_ON(!intel_context_is_pinned(ce));
+
 	/*
 	 * Because we emit WA_TAIL_DWORDS there may be a disparity
 	 * between our bookkeeping in ce->ring->head and ce->ring->tail and
@@ -2511,7 +2513,11 @@ static void execlists_context_reset(struct intel_context *ce)
 	 * simplicity, we just zero everything out.
 	 */
 	intel_ring_reset(ce->ring, 0);
+
 	__execlists_update_reg_state(ce, ce->engine);
+	ce->lrc_reg_state[CTX_CONTEXT_CONTROL] |=
+		_MASKED_BIT_ENABLE(CTX_CTRL_ENGINE_CTX_RESTORE_INHIBIT);
+	ce->lrc_desc |= CTX_DESC_FORCE_RESTORE;
 }
 
 static const struct intel_context_ops execlists_context_ops = {
-- 
2.24.1

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[Intel-gfx] [PATCH 2/3] drm/i915/gt: Discard stale context state from across idling

[Chris Wilson]

Before we idle, on parking, we switch to the kernel context such that we
have a scratch context loaded while the GPU idle, protecting any
precious user state. Be paranoid and assume that the idle state may have
been trashed, and reset the kernel_context image after idling.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Imre Deak <imre.deak@intel.com>
---
 drivers/gpu/drm/i915/gt/intel_engine_pm.c | 6 ++++++
 drivers/gpu/drm/i915/gt/intel_gt_pm.c     | 8 --------
 2 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_engine_pm.c b/drivers/gpu/drm/i915/gt/intel_engine_pm.c
index 010620b78202..b9444ce29a3a 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_pm.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_pm.c
@@ -20,6 +20,7 @@ static int __engine_unpark(struct intel_wakeref *wf)
 {
 	struct intel_engine_cs *engine =
 		container_of(wf, typeof(*engine), wakeref);
+	struct intel_context *ce;
 	void *map;
 
 	ENGINE_TRACE(engine, "\n");
@@ -34,6 +35,11 @@ static int __engine_unpark(struct intel_wakeref *wf)
 	if (!IS_ERR_OR_NULL(map))
 		engine->pinned_default_state = map;
 
+	/* Discard stale context state from across idling */
+	ce = engine->kernel_context;
+	if (ce)
+		ce->ops->reset(ce);
+
 	if (engine->unpark)
 		engine->unpark(engine);
 
diff --git a/drivers/gpu/drm/i915/gt/intel_gt_pm.c b/drivers/gpu/drm/i915/gt/intel_gt_pm.c
index 45b68a17da4d..46a0aed2d5d5 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_pm.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt_pm.c
@@ -215,16 +215,8 @@ int intel_gt_resume(struct intel_gt *gt)
 	intel_llc_enable(&gt->llc);
 
 	for_each_engine(engine, gt, id) {
-		struct intel_context *ce;
-
 		intel_engine_pm_get(engine);
 
-		ce = engine->kernel_context;
-		if (ce) {
-			GEM_BUG_ON(!intel_context_is_pinned(ce));
-			ce->ops->reset(ce);
-		}
-
 		engine->serial++; /* kernel context lost */
 		err = engine->resume(engine);
 
-- 
2.24.1

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[Intel-gfx] [PATCH 3/3] drm/i915/gt: Restore coarse power gating for gen9

[Chris Wilson]

Believe in the power of the sacrificial kernel context and restore
coarse power gating in the belief that the issue affects only the
context idling on another engine -- i.e. only affects our scratch
kernel_context.

Closes: https://gitlab.freedesktop.org/drm/intel/issues/846
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Eero Tamminen <eero.t.tamminen@intel.com>
Cc: Jon Bloomfield <jon.bloomfield@intel.com>
---
 drivers/gpu/drm/i915/gt/intel_rc6.c    | 9 ++-------
 drivers/gpu/drm/i915/gt/uc/intel_guc.c | 2 +-
 drivers/gpu/drm/i915/i915_drv.h        | 4 ----
 3 files changed, 3 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_rc6.c b/drivers/gpu/drm/i915/gt/intel_rc6.c
index 9e303c29d6e3..c47b02e2e029 100644
--- a/drivers/gpu/drm/i915/gt/intel_rc6.c
+++ b/drivers/gpu/drm/i915/gt/intel_rc6.c
@@ -175,13 +175,8 @@ static void gen9_rc6_enable(struct intel_rc6 *rc6)
 		GEN6_RC_CTL_RC6_ENABLE |
 		rc6_mode;
 
-	/*
-	 * WaRsDisableCoarsePowerGating:skl,cnl
-	 *   - Render/Media PG need to be disabled with RC6.
-	 */
-	if (!NEEDS_WaRsDisableCoarsePowerGating(rc6_to_i915(rc6)))
-		set(uncore, GEN9_PG_ENABLE,
-		    GEN9_RENDER_PG_ENABLE | GEN9_MEDIA_PG_ENABLE);
+	set(uncore, GEN9_PG_ENABLE,
+	    GEN9_RENDER_PG_ENABLE | GEN9_MEDIA_PG_ENABLE);
 }
 
 static void gen8_rc6_enable(struct intel_rc6 *rc6)
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.c b/drivers/gpu/drm/i915/gt/uc/intel_guc.c
index 5d00a3b2d914..cfa6dde0fc63 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.c
@@ -496,7 +496,7 @@ int intel_guc_sample_forcewake(struct intel_guc *guc)
 
 	action[0] = INTEL_GUC_ACTION_SAMPLE_FORCEWAKE;
 	/* WaRsDisableCoarsePowerGating:skl,cnl */
-	if (!HAS_RC6(dev_priv) || NEEDS_WaRsDisableCoarsePowerGating(dev_priv))
+	if (IS_GEN(dev_priv, 9))
 		action[1] = 0;
 	else
 		/* bit 0 and 1 are for Render and Media domain separately */
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index b7f122dccdca..776d4e4b9435 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1656,10 +1656,6 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
 #define NEEDS_RC6_CTX_CORRUPTION_WA(dev_priv)	\
 	(IS_BROADWELL(dev_priv) || IS_GEN(dev_priv, 9))
 
-/* WaRsDisableCoarsePowerGating:skl,cnl */
-#define NEEDS_WaRsDisableCoarsePowerGating(dev_priv) \
-	IS_GEN_RANGE(dev_priv, 9, 10)
-
 #define HAS_GMBUS_IRQ(dev_priv) (INTEL_GEN(dev_priv) >= 4)
 #define HAS_GMBUS_BURST_READ(dev_priv) (INTEL_GEN(dev_priv) >= 10 || \
 					IS_GEMINILAKE(dev_priv) || \
-- 
2.24.1

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[Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for series starting with [1/3] drm/i915/gt: Ignore stale context state upon resume

[Patchwork]

== Series Details ==

Series: series starting with [1/3] drm/i915/gt: Ignore stale context state upon resume
URL   : https://patchwork.freedesktop.org/series/71378/
State : warning

== Summary ==

$ dim checkpatch origin/drm-tip
f5a68faf90c3 drm/i915/gt: Ignore stale context state upon resume
-:7: WARNING:COMMIT_MESSAGE: Missing commit description - Add an appropriate one

total: 0 errors, 1 warnings, 0 checks, 19 lines checked
4dd3485221af drm/i915/gt: Discard stale context state from across idling
e91e3cba7965 drm/i915/gt: Restore coarse power gating for gen9

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[Intel-gfx] ✗ Fi.CI.BAT: failure for series starting with [1/3] drm/i915/gt: Ignore stale context state upon resume

[Patchwork]

== Series Details ==

Series: series starting with [1/3] drm/i915/gt: Ignore stale context state upon resume
URL   : https://patchwork.freedesktop.org/series/71378/
State : failure

== Summary ==

CI Bug Log - changes from CI_DRM_7634 -> Patchwork_15922
====================================================

Summary
-------

  **FAILURE**

  Serious unknown changes coming with Patchwork_15922 absolutely need to be
  verified manually.
  
  If you think the reported changes have nothing to do with the changes
  introduced in Patchwork_15922, please notify your bug team to allow them
  to document this new failure mode, which will reduce false positives in CI.

  External URL: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/index.html

Possible new issues
-------------------

  Here are the unknown changes that may have been introduced in Patchwork_15922:

### IGT changes ###

#### Possible regressions ####

  * igt@core_auth@basic-auth:
    - fi-hsw-4770:        [PASS][1] -> [FAIL][2]
   [1]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7634/fi-hsw-4770/igt@core_auth@basic-auth.html
   [2]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-hsw-4770/igt@core_auth@basic-auth.html
    - fi-byt-j1900:       [PASS][3] -> [FAIL][4]
   [3]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7634/fi-byt-j1900/igt@core_auth@basic-auth.html
   [4]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-byt-j1900/igt@core_auth@basic-auth.html
    - fi-pnv-d510:        [PASS][5] -> [FAIL][6]
   [5]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7634/fi-pnv-d510/igt@core_auth@basic-auth.html
   [6]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-pnv-d510/igt@core_auth@basic-auth.html
    - fi-snb-2520m:       [PASS][7] -> [FAIL][8]
   [7]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7634/fi-snb-2520m/igt@core_auth@basic-auth.html
   [8]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-snb-2520m/igt@core_auth@basic-auth.html
    - fi-byt-n2820:       [PASS][9] -> [FAIL][10]
   [9]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7634/fi-byt-n2820/igt@core_auth@basic-auth.html
   [10]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-byt-n2820/igt@core_auth@basic-auth.html
    - fi-elk-e7500:       [PASS][11] -> [FAIL][12]
   [11]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7634/fi-elk-e7500/igt@core_auth@basic-auth.html
   [12]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-elk-e7500/igt@core_auth@basic-auth.html
    - fi-ilk-650:         [PASS][13] -> [FAIL][14]
   [13]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7634/fi-ilk-650/igt@core_auth@basic-auth.html
   [14]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-ilk-650/igt@core_auth@basic-auth.html
    - fi-hsw-peppy:       [PASS][15] -> [FAIL][16]
   [15]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7634/fi-hsw-peppy/igt@core_auth@basic-auth.html
   [16]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-hsw-peppy/igt@core_auth@basic-auth.html
    - fi-hsw-4770r:       [PASS][17] -> [FAIL][18]
   [17]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7634/fi-hsw-4770r/igt@core_auth@basic-auth.html
   [18]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-hsw-4770r/igt@core_auth@basic-auth.html
    - fi-gdg-551:         [PASS][19] -> [FAIL][20]
   [19]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7634/fi-gdg-551/igt@core_auth@basic-auth.html
   [20]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-gdg-551/igt@core_auth@basic-auth.html

  * igt@gem_sync@basic-store-each:
    - fi-skl-guc:         [PASS][21] -> [INCOMPLETE][22]
   [21]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7634/fi-skl-guc/igt@gem_sync@basic-store-each.html
   [22]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-skl-guc/igt@gem_sync@basic-store-each.html
    - fi-glk-dsi:         [PASS][23] -> [FAIL][24]
   [23]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7634/fi-glk-dsi/igt@gem_sync@basic-store-each.html
   [24]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-glk-dsi/igt@gem_sync@basic-store-each.html

  * igt@gem_wait@basic-busy-all:
    - fi-bwr-2160:        NOTRUN -> [FAIL][25] +11 similar issues
   [25]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-bwr-2160/igt@gem_wait@basic-busy-all.html

  * igt@gem_wait@basic-wait-all:
    - fi-bwr-2160:        NOTRUN -> [TIMEOUT][26]
   [26]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-bwr-2160/igt@gem_wait@basic-wait-all.html

  * igt@i915_module_load@reload-with-fault-injection:
    - fi-cfl-guc:         NOTRUN -> [DMESG-WARN][27]
   [27]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-cfl-guc/igt@i915_module_load@reload-with-fault-injection.html

  * igt@i915_pm_rpm@module-reload:
    - fi-skl-6600u:       NOTRUN -> [FAIL][28]
   [28]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-skl-6600u/igt@i915_pm_rpm@module-reload.html
    - fi-cfl-guc:         NOTRUN -> [FAIL][29] +1 similar issue
   [29]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-cfl-guc/igt@i915_pm_rpm@module-reload.html

  * igt@runner@aborted:
    - fi-pnv-d510:        NOTRUN -> [FAIL][30]
   [30]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-pnv-d510/igt@runner@aborted.html
    - fi-hsw-4770r:       NOTRUN -> [FAIL][31]
   [31]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-hsw-4770r/igt@runner@aborted.html
    - fi-hsw-peppy:       NOTRUN -> [FAIL][32]
   [32]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-hsw-peppy/igt@runner@aborted.html
    - fi-gdg-551:         NOTRUN -> [FAIL][33]
   [33]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-gdg-551/igt@runner@aborted.html
    - fi-snb-2520m:       NOTRUN -> [FAIL][34]
   [34]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-snb-2520m/igt@runner@aborted.html
    - fi-byt-n2820:       NOTRUN -> [FAIL][35]
   [35]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-byt-n2820/igt@runner@aborted.html
    - fi-hsw-4770:        NOTRUN -> [FAIL][36]
   [36]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-hsw-4770/igt@runner@aborted.html
    - fi-byt-j1900:       NOTRUN -> [FAIL][37]
   [37]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-byt-j1900/igt@runner@aborted.html
    - fi-elk-e7500:       NOTRUN -> [FAIL][38]
   [38]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-elk-e7500/igt@runner@aborted.html

  
#### Warnings ####

  * igt@i915_module_load@reload-with-fault-injection:
    - fi-skl-6600u:       [INCOMPLETE][39] ([i915#671] / [i915#69]) -> [DMESG-WARN][40]
   [39]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7634/fi-skl-6600u/igt@i915_module_load@reload-with-fault-injection.html
   [40]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-skl-6600u/igt@i915_module_load@reload-with-fault-injection.html

  
Known issues
------------

  Here are the changes found in Patchwork_15922 that come from known issues:

### IGT changes ###

#### Issues hit ####

  * igt@gem_exec_suspend@basic-s0:
    - fi-cml-s:           [PASS][41] -> [FAIL][42] ([fdo#103375])
   [41]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7634/fi-cml-s/igt@gem_exec_suspend@basic-s0.html
   [42]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-cml-s/igt@gem_exec_suspend@basic-s0.html

  * igt@gem_sync@basic-store-each:
    - fi-apl-guc:         [PASS][43] -> [INCOMPLETE][44] ([fdo#103927])
   [43]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7634/fi-apl-guc/igt@gem_sync@basic-store-each.html
   [44]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-apl-guc/igt@gem_sync@basic-store-each.html

  * igt@i915_selftest@live_gt_heartbeat:
    - fi-kbl-soraka:      [PASS][45] -> [DMESG-FAIL][46] ([i915#541])
   [45]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7634/fi-kbl-soraka/igt@i915_selftest@live_gt_heartbeat.html
   [46]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-kbl-soraka/igt@i915_selftest@live_gt_heartbeat.html

  
#### Possible fixes ####

  * igt@gem_exec_suspend@basic-s3:
    - fi-cml-s:           [DMESG-WARN][47] ([fdo#111764]) -> [PASS][48]
   [47]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7634/fi-cml-s/igt@gem_exec_suspend@basic-s3.html
   [48]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-cml-s/igt@gem_exec_suspend@basic-s3.html

  * igt@i915_pm_rpm@module-reload:
    - fi-skl-6770hq:      [FAIL][49] ([i915#178]) -> [PASS][50]
   [49]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7634/fi-skl-6770hq/igt@i915_pm_rpm@module-reload.html
   [50]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-skl-6770hq/igt@i915_pm_rpm@module-reload.html

  * igt@kms_chamelium@hdmi-edid-read:
    - fi-icl-u2:          [DMESG-WARN][51] -> [PASS][52]
   [51]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7634/fi-icl-u2/igt@kms_chamelium@hdmi-edid-read.html
   [52]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-icl-u2/igt@kms_chamelium@hdmi-edid-read.html

  
#### Warnings ####

  * igt@kms_force_connector_basic@force-connector-state:
    - fi-kbl-x1275:       [DMESG-WARN][53] ([i915#62] / [i915#92] / [i915#95]) -> [DMESG-WARN][54] ([i915#62] / [i915#92]) +6 similar issues
   [53]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7634/fi-kbl-x1275/igt@kms_force_connector_basic@force-connector-state.html
   [54]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-kbl-x1275/igt@kms_force_connector_basic@force-connector-state.html

  * igt@prime_vgem@basic-fence-flip:
    - fi-kbl-x1275:       [DMESG-WARN][55] ([i915#62] / [i915#92]) -> [DMESG-WARN][56] ([i915#62] / [i915#92] / [i915#95]) +3 similar issues
   [55]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7634/fi-kbl-x1275/igt@prime_vgem@basic-fence-flip.html
   [56]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/fi-kbl-x1275/igt@prime_vgem@basic-fence-flip.html

  
  {name}: This element is suppressed. This means it is ignored when computing
          the status of the difference (SUCCESS, WARNING, or FAILURE).

  [fdo#103375]: https://bugs.freedesktop.org/show_bug.cgi?id=103375
  [fdo#103927]: https://bugs.freedesktop.org/show_bug.cgi?id=103927
  [fdo#111593]: https://bugs.freedesktop.org/show_bug.cgi?id=111593
  [fdo#111764]: https://bugs.freedesktop.org/show_bug.cgi?id=111764
  [i915#178]: https://gitlab.freedesktop.org/drm/intel/issues/178
  [i915#435]: https://gitlab.freedesktop.org/drm/intel/issues/435
  [i915#541]: https://gitlab.freedesktop.org/drm/intel/issues/541
  [i915#62]: https://gitlab.freedesktop.org/drm/intel/issues/62
  [i915#671]: https://gitlab.freedesktop.org/drm/intel/issues/671
  [i915#69]: https://gitlab.freedesktop.org/drm/intel/issues/69
  [i915#92]: https://gitlab.freedesktop.org/drm/intel/issues/92
  [i915#95]: https://gitlab.freedesktop.org/drm/intel/issues/95


Participating hosts (44 -> 40)
------------------------------

  Additional (5): fi-cfl-guc fi-bwr-2160 fi-kbl-7500u fi-whl-u fi-skl-6700k2 
  Missing    (9): fi-bdw-5557u fi-byt-squawks fi-bsw-cyan fi-ctg-p8600 fi-ivb-3770 fi-bsw-kefka fi-blb-e6850 fi-bdw-samus fi-snb-2600 


Build changes
-------------

  * CI: CI-20190529 -> None
  * Linux: CI_DRM_7634 -> Patchwork_15922

  CI-20190529: 20190529
  CI_DRM_7634: a20d8cd6901aec154de1c0800d5a7f17d43c5b1e @ git://anongit.freedesktop.org/gfx-ci/linux
  IGT_5352: 0586d205f651674e575351c2d5a7d0760716c9f1 @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools
  Patchwork_15922: e91e3cba796534f7cf03d31ce27b778fd7900918 @ git://anongit.freedesktop.org/gfx-ci/linux


== Linux commits ==

e91e3cba7965 drm/i915/gt: Restore coarse power gating for gen9
4dd3485221af drm/i915/gt: Discard stale context state from across idling
f5a68faf90c3 drm/i915/gt: Ignore stale context state upon resume

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_15922/index.html
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