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* [Intel-gfx] [PATCH RFC] drm/i915/gt: Retry RING_HEAD reset until it sticks
@ 2022-07-15  8:26 Mauro Carvalho Chehab
  2022-07-15  9:27 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for " Patchwork
                   ` (4 more replies)
  0 siblings, 5 replies; 6+ messages in thread
From: Mauro Carvalho Chehab @ 2022-07-15  8:26 UTC (permalink / raw)
  Cc: Andrzej Hajda, David Airlie, dri-devel, linux-kernel,
	Chris Wilson, Rodrigo Vivi, Mauro Carvalho Chehab, intel-gfx,
	Matthew Auld

From: Chris Wilson <chris@chris-wilson.co.uk>

On Haswell, in particular, we see an issue where resets fails because
the engine resumes from an incorrect RING_HEAD. Since the RING_HEAD
doesn't point to the remaining requests to re-run, but may instead point
into the uninitialised portion of the ring, the GPU may be then fed
invalid instructions from a privileged context, oft pushing the GPU into
an unrecoverable hang.

If at first the write doesn't succeed, try, try again.

References: https://gitlab.freedesktop.org/drm/intel/-/issues/5432
Testcase: igt/i915_selftest/hangcheck
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Andrzej Hajda <andrzej.hajda@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
---
 .../gpu/drm/i915/gt/intel_ring_submission.c   | 44 +++++++++++++------
 drivers/gpu/drm/i915/i915_utils.h             | 10 +++++
 2 files changed, 40 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_ring_submission.c b/drivers/gpu/drm/i915/gt/intel_ring_submission.c
index d5d6f1fadcae..cc53feb1f8ed 100644
--- a/drivers/gpu/drm/i915/gt/intel_ring_submission.c
+++ b/drivers/gpu/drm/i915/gt/intel_ring_submission.c
@@ -190,6 +190,7 @@ static bool stop_ring(struct intel_engine_cs *engine)
 static int xcs_resume(struct intel_engine_cs *engine)
 {
 	struct intel_ring *ring = engine->legacy.ring;
+	ktime_t kt;
 
 	ENGINE_TRACE(engine, "ring:{HEAD:%04x, TAIL:%04x}\n",
 		     ring->head, ring->tail);
@@ -228,9 +229,20 @@ static int xcs_resume(struct intel_engine_cs *engine)
 	set_pp_dir(engine);
 
 	/* First wake the ring up to an empty/idle ring */
-	ENGINE_WRITE_FW(engine, RING_HEAD, ring->head);
+	until_timeout_ns(kt, 2 * NSEC_PER_MSEC) {
+		ENGINE_WRITE_FW(engine, RING_HEAD, ring->head);
+		if (ENGINE_READ_FW(engine, RING_HEAD) == ring->head)
+			break;
+	}
+
 	ENGINE_WRITE_FW(engine, RING_TAIL, ring->head);
-	ENGINE_POSTING_READ(engine, RING_TAIL);
+	if (ENGINE_READ_FW(engine, RING_HEAD) != ENGINE_READ_FW(engine, RING_TAIL)) {
+		ENGINE_TRACE(engine, "failed to reset empty ring: [%x, %x]: %x\n",
+			     ENGINE_READ_FW(engine, RING_HEAD),
+			     ENGINE_READ_FW(engine, RING_TAIL),
+			     ring->head);
+		goto err;
+	}
 
 	ENGINE_WRITE_FW(engine, RING_CTL,
 			RING_CTL_SIZE(ring->size) | RING_VALID);
@@ -239,12 +251,16 @@ static int xcs_resume(struct intel_engine_cs *engine)
 	if (__intel_wait_for_register_fw(engine->uncore,
 					 RING_CTL(engine->mmio_base),
 					 RING_VALID, RING_VALID,
-					 5000, 0, NULL))
+					 5000, 0, NULL)) {
+		ENGINE_TRACE(engine, "failed to restart\n");
 		goto err;
+	}
 
-	if (GRAPHICS_VER(engine->i915) > 2)
+	if (GRAPHICS_VER(engine->i915) > 2) {
 		ENGINE_WRITE_FW(engine,
 				RING_MI_MODE, _MASKED_BIT_DISABLE(STOP_RING));
+		ENGINE_POSTING_READ(engine, RING_MI_MODE);
+	}
 
 	/* Now awake, let it get started */
 	if (ring->tail != ring->head) {
@@ -257,16 +273,16 @@ static int xcs_resume(struct intel_engine_cs *engine)
 	return 0;
 
 err:
-	drm_err(&engine->i915->drm,
-		"%s initialization failed; "
-		"ctl %08x (valid? %d) head %08x [%08x] tail %08x [%08x] start %08x [expected %08x]\n",
-		engine->name,
-		ENGINE_READ(engine, RING_CTL),
-		ENGINE_READ(engine, RING_CTL) & RING_VALID,
-		ENGINE_READ(engine, RING_HEAD), ring->head,
-		ENGINE_READ(engine, RING_TAIL), ring->tail,
-		ENGINE_READ(engine, RING_START),
-		i915_ggtt_offset(ring->vma));
+	ENGINE_TRACE(engine,
+		     "initialization failed; "
+		     "ctl %08x (valid? %d) head %08x [%08x] tail %08x [%08x] start %08x [expected %08x]\n",
+		     ENGINE_READ(engine, RING_CTL),
+		     ENGINE_READ(engine, RING_CTL) & RING_VALID,
+		     ENGINE_READ(engine, RING_HEAD), ring->head,
+		     ENGINE_READ(engine, RING_TAIL), ring->tail,
+		     ENGINE_READ(engine, RING_START),
+		     i915_ggtt_offset(ring->vma));
+	GEM_TRACE_DUMP();
 	return -EIO;
 }
 
diff --git a/drivers/gpu/drm/i915/i915_utils.h b/drivers/gpu/drm/i915/i915_utils.h
index c10d68cdc3ca..717fb6b9cc15 100644
--- a/drivers/gpu/drm/i915/i915_utils.h
+++ b/drivers/gpu/drm/i915/i915_utils.h
@@ -256,6 +256,16 @@ wait_remaining_ms_from_jiffies(unsigned long timestamp_jiffies, int to_wait_ms)
 	}
 }
 
+/**
+ * until_timeout_ns - Keep retrying (busy spin) until the duration has passed
+ * @end: temporary var to be used to track the spent time
+ * @timeout_ns: Maximum timeout, in nanosseconds
+ */
+#define until_timeout_ns(end, timeout_ns) \
+	for ((end) = ktime_get() + (timeout_ns); \
+	     ktime_before(ktime_get(), (end)); \
+	     cpu_relax())
+
 /**
  * __wait_for - magic wait macro
  *
-- 
2.36.1



^ permalink raw reply related	[flat|nested] 6+ messages in thread

* [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for drm/i915/gt: Retry RING_HEAD reset until it sticks
  2022-07-15  8:26 [Intel-gfx] [PATCH RFC] drm/i915/gt: Retry RING_HEAD reset until it sticks Mauro Carvalho Chehab
@ 2022-07-15  9:27 ` Patchwork
  2022-07-15  9:46 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
                   ` (3 subsequent siblings)
  4 siblings, 0 replies; 6+ messages in thread
From: Patchwork @ 2022-07-15  9:27 UTC (permalink / raw)
  To: Mauro Carvalho Chehab; +Cc: intel-gfx

== Series Details ==

Series: drm/i915/gt: Retry RING_HEAD reset until it sticks
URL   : https://patchwork.freedesktop.org/series/106377/
State : warning

== Summary ==

Error: dim checkpatch failed
8af7dbc6eea2 drm/i915/gt: Retry RING_HEAD reset until it sticks
-:116: CHECK:MACRO_ARG_REUSE: Macro argument reuse 'end' - possible side-effects?
#116: FILE: drivers/gpu/drm/i915/i915_utils.h:264:
+#define until_timeout_ns(end, timeout_ns) \
+	for ((end) = ktime_get() + (timeout_ns); \
+	     ktime_before(ktime_get(), (end)); \
+	     cpu_relax())

total: 0 errors, 0 warnings, 1 checks, 89 lines checked



^ permalink raw reply	[flat|nested] 6+ messages in thread

* [Intel-gfx] ✓ Fi.CI.BAT: success for drm/i915/gt: Retry RING_HEAD reset until it sticks
  2022-07-15  8:26 [Intel-gfx] [PATCH RFC] drm/i915/gt: Retry RING_HEAD reset until it sticks Mauro Carvalho Chehab
  2022-07-15  9:27 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for " Patchwork
@ 2022-07-15  9:46 ` Patchwork
  2022-07-15 10:11 ` [Intel-gfx] [PATCH RFC] " Andrzej Hajda
                   ` (2 subsequent siblings)
  4 siblings, 0 replies; 6+ messages in thread
From: Patchwork @ 2022-07-15  9:46 UTC (permalink / raw)
  To: Mauro Carvalho Chehab; +Cc: intel-gfx

[-- Attachment #1: Type: text/plain, Size: 7856 bytes --]

== Series Details ==

Series: drm/i915/gt: Retry RING_HEAD reset until it sticks
URL   : https://patchwork.freedesktop.org/series/106377/
State : success

== Summary ==

CI Bug Log - changes from CI_DRM_11900 -> Patchwork_106377v1
====================================================

Summary
-------

  **SUCCESS**

  No regressions found.

  External URL: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/index.html

Participating hosts (43 -> 34)
------------------------------

  Additional (2): fi-rkl-11600 bat-jsl-3 
  Missing    (11): bat-dg1-5 bat-dg2-8 bat-adlm-1 fi-icl-u2 bat-dg2-9 bat-adlp-6 bat-adlp-4 bat-adln-1 bat-rpls-1 bat-rpls-2 bat-jsl-1 

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

  Here are the changes found in Patchwork_106377v1 that come from known issues:

### IGT changes ###

#### Issues hit ####

  * igt@gem_huc_copy@huc-copy:
    - fi-rkl-11600:       NOTRUN -> [SKIP][1] ([i915#2190])
   [1]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/fi-rkl-11600/igt@gem_huc_copy@huc-copy.html

  * igt@gem_lmem_swapping@parallel-random-engines:
    - fi-rkl-11600:       NOTRUN -> [SKIP][2] ([i915#4613]) +3 similar issues
   [2]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/fi-rkl-11600/igt@gem_lmem_swapping@parallel-random-engines.html

  * igt@gem_tiled_pread_basic:
    - fi-rkl-11600:       NOTRUN -> [SKIP][3] ([i915#3282])
   [3]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/fi-rkl-11600/igt@gem_tiled_pread_basic.html

  * igt@i915_pm_backlight@basic-brightness:
    - fi-rkl-11600:       NOTRUN -> [SKIP][4] ([i915#3012])
   [4]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/fi-rkl-11600/igt@i915_pm_backlight@basic-brightness.html

  * igt@i915_selftest@live@requests:
    - fi-pnv-d510:        [PASS][5] -> [DMESG-FAIL][6] ([i915#4528])
   [5]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/fi-pnv-d510/igt@i915_selftest@live@requests.html
   [6]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/fi-pnv-d510/igt@i915_selftest@live@requests.html

  * igt@i915_suspend@basic-s3-without-i915:
    - fi-rkl-11600:       NOTRUN -> [INCOMPLETE][7] ([i915#5982])
   [7]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/fi-rkl-11600/igt@i915_suspend@basic-s3-without-i915.html

  * igt@kms_chamelium@common-hpd-after-suspend:
    - fi-snb-2600:        NOTRUN -> [SKIP][8] ([fdo#109271] / [fdo#111827])
   [8]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/fi-snb-2600/igt@kms_chamelium@common-hpd-after-suspend.html

  * igt@kms_chamelium@hdmi-hpd-fast:
    - fi-rkl-11600:       NOTRUN -> [SKIP][9] ([fdo#111827]) +7 similar issues
   [9]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/fi-rkl-11600/igt@kms_chamelium@hdmi-hpd-fast.html

  * igt@kms_cursor_legacy@basic-busy-flip-before-cursor:
    - fi-rkl-11600:       NOTRUN -> [SKIP][10] ([i915#4103])
   [10]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/fi-rkl-11600/igt@kms_cursor_legacy@basic-busy-flip-before-cursor.html

  * igt@kms_cursor_legacy@basic-busy-flip-before-cursor@atomic-transitions:
    - fi-bsw-kefka:       [PASS][11] -> [FAIL][12] ([i915#6298])
   [11]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/fi-bsw-kefka/igt@kms_cursor_legacy@basic-busy-flip-before-cursor@atomic-transitions.html
   [12]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/fi-bsw-kefka/igt@kms_cursor_legacy@basic-busy-flip-before-cursor@atomic-transitions.html

  * igt@kms_force_connector_basic@force-load-detect:
    - fi-rkl-11600:       NOTRUN -> [SKIP][13] ([fdo#109285] / [i915#4098])
   [13]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/fi-rkl-11600/igt@kms_force_connector_basic@force-load-detect.html

  * igt@kms_psr@sprite_plane_onoff:
    - fi-rkl-11600:       NOTRUN -> [SKIP][14] ([i915#1072]) +3 similar issues
   [14]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/fi-rkl-11600/igt@kms_psr@sprite_plane_onoff.html

  * igt@kms_setmode@basic-clone-single-crtc:
    - fi-rkl-11600:       NOTRUN -> [SKIP][15] ([i915#3555] / [i915#4098])
   [15]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/fi-rkl-11600/igt@kms_setmode@basic-clone-single-crtc.html

  * igt@prime_vgem@basic-read:
    - fi-rkl-11600:       NOTRUN -> [SKIP][16] ([fdo#109295] / [i915#3291] / [i915#3708]) +2 similar issues
   [16]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/fi-rkl-11600/igt@prime_vgem@basic-read.html

  * igt@prime_vgem@basic-userptr:
    - fi-rkl-11600:       NOTRUN -> [SKIP][17] ([fdo#109295] / [i915#3301] / [i915#3708])
   [17]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/fi-rkl-11600/igt@prime_vgem@basic-userptr.html

  * igt@runner@aborted:
    - fi-pnv-d510:        NOTRUN -> [FAIL][18] ([fdo#109271] / [i915#2403] / [i915#4312])
   [18]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/fi-pnv-d510/igt@runner@aborted.html

  
#### Possible fixes ####

  * igt@i915_selftest@live@hangcheck:
    - fi-snb-2600:        [INCOMPLETE][19] ([i915#3921]) -> [PASS][20]
   [19]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/fi-snb-2600/igt@i915_selftest@live@hangcheck.html
   [20]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/fi-snb-2600/igt@i915_selftest@live@hangcheck.html

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

  [fdo#109271]: https://bugs.freedesktop.org/show_bug.cgi?id=109271
  [fdo#109284]: https://bugs.freedesktop.org/show_bug.cgi?id=109284
  [fdo#109285]: https://bugs.freedesktop.org/show_bug.cgi?id=109285
  [fdo#109295]: https://bugs.freedesktop.org/show_bug.cgi?id=109295
  [fdo#111827]: https://bugs.freedesktop.org/show_bug.cgi?id=111827
  [i915#1072]: https://gitlab.freedesktop.org/drm/intel/issues/1072
  [i915#1759]: https://gitlab.freedesktop.org/drm/intel/issues/1759
  [i915#2190]: https://gitlab.freedesktop.org/drm/intel/issues/2190
  [i915#2373]: https://gitlab.freedesktop.org/drm/intel/issues/2373
  [i915#2403]: https://gitlab.freedesktop.org/drm/intel/issues/2403
  [i915#3003]: https://gitlab.freedesktop.org/drm/intel/issues/3003
  [i915#3012]: https://gitlab.freedesktop.org/drm/intel/issues/3012
  [i915#3282]: https://gitlab.freedesktop.org/drm/intel/issues/3282
  [i915#3291]: https://gitlab.freedesktop.org/drm/intel/issues/3291
  [i915#3301]: https://gitlab.freedesktop.org/drm/intel/issues/3301
  [i915#3555]: https://gitlab.freedesktop.org/drm/intel/issues/3555
  [i915#3708]: https://gitlab.freedesktop.org/drm/intel/issues/3708
  [i915#3921]: https://gitlab.freedesktop.org/drm/intel/issues/3921
  [i915#4098]: https://gitlab.freedesktop.org/drm/intel/issues/4098
  [i915#4103]: https://gitlab.freedesktop.org/drm/intel/issues/4103
  [i915#4312]: https://gitlab.freedesktop.org/drm/intel/issues/4312
  [i915#4528]: https://gitlab.freedesktop.org/drm/intel/issues/4528
  [i915#4613]: https://gitlab.freedesktop.org/drm/intel/issues/4613
  [i915#5903]: https://gitlab.freedesktop.org/drm/intel/issues/5903
  [i915#5982]: https://gitlab.freedesktop.org/drm/intel/issues/5982
  [i915#6298]: https://gitlab.freedesktop.org/drm/intel/issues/6298


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

  * Linux: CI_DRM_11900 -> Patchwork_106377v1

  CI-20190529: 20190529
  CI_DRM_11900: 5218ea24682b8edb1d629323dce5c88a44e225b0 @ git://anongit.freedesktop.org/gfx-ci/linux
  IGT_6585: 1b15ce5ec4cb6693daa9dff042e32f675ba8af76 @ https://gitlab.freedesktop.org/drm/igt-gpu-tools.git
  Patchwork_106377v1: 5218ea24682b8edb1d629323dce5c88a44e225b0 @ git://anongit.freedesktop.org/gfx-ci/linux


### Linux commits

6e9a509f2d69 drm/i915/gt: Retry RING_HEAD reset until it sticks

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/index.html

[-- Attachment #2: Type: text/html, Size: 8867 bytes --]

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: [Intel-gfx] [PATCH RFC] drm/i915/gt: Retry RING_HEAD reset until it sticks
  2022-07-15  8:26 [Intel-gfx] [PATCH RFC] drm/i915/gt: Retry RING_HEAD reset until it sticks Mauro Carvalho Chehab
  2022-07-15  9:27 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for " Patchwork
  2022-07-15  9:46 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
@ 2022-07-15 10:11 ` Andrzej Hajda
  2022-07-15 12:20 ` [Intel-gfx] ✗ Fi.CI.IGT: failure for " Patchwork
  2022-07-15 20:28 ` [Intel-gfx] [PATCH RFC] " Rodrigo Vivi
  4 siblings, 0 replies; 6+ messages in thread
From: Andrzej Hajda @ 2022-07-15 10:11 UTC (permalink / raw)
  To: Mauro Carvalho Chehab
  Cc: David Airlie, intel-gfx, linux-kernel, dri-devel, Chris Wilson,
	Matthew Auld, Rodrigo Vivi

On 15.07.2022 10:26, Mauro Carvalho Chehab wrote:
> From: Chris Wilson <chris@chris-wilson.co.uk>
> 
> On Haswell, in particular, we see an issue where resets fails because
> the engine resumes from an incorrect RING_HEAD. Since the RING_HEAD
> doesn't point to the remaining requests to re-run, but may instead point
> into the uninitialised portion of the ring, the GPU may be then fed
> invalid instructions from a privileged context, oft pushing the GPU into
> an unrecoverable hang.
> 
> If at first the write doesn't succeed, try, try again.
> 
> References: https://gitlab.freedesktop.org/drm/intel/-/issues/5432
> Testcase: igt/i915_selftest/hangcheck
> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
> Cc: Andrzej Hajda <andrzej.hajda@intel.com>
> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>


That is pity hw does not provide reliable way of reset.

Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>

Regards
Andrzej


> ---
>   .../gpu/drm/i915/gt/intel_ring_submission.c   | 44 +++++++++++++------
>   drivers/gpu/drm/i915/i915_utils.h             | 10 +++++
>   2 files changed, 40 insertions(+), 14 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/gt/intel_ring_submission.c b/drivers/gpu/drm/i915/gt/intel_ring_submission.c
> index d5d6f1fadcae..cc53feb1f8ed 100644
> --- a/drivers/gpu/drm/i915/gt/intel_ring_submission.c
> +++ b/drivers/gpu/drm/i915/gt/intel_ring_submission.c
> @@ -190,6 +190,7 @@ static bool stop_ring(struct intel_engine_cs *engine)
>   static int xcs_resume(struct intel_engine_cs *engine)
>   {
>   	struct intel_ring *ring = engine->legacy.ring;
> +	ktime_t kt;
>   
>   	ENGINE_TRACE(engine, "ring:{HEAD:%04x, TAIL:%04x}\n",
>   		     ring->head, ring->tail);
> @@ -228,9 +229,20 @@ static int xcs_resume(struct intel_engine_cs *engine)
>   	set_pp_dir(engine);
>   
>   	/* First wake the ring up to an empty/idle ring */
> -	ENGINE_WRITE_FW(engine, RING_HEAD, ring->head);
> +	until_timeout_ns(kt, 2 * NSEC_PER_MSEC) {
> +		ENGINE_WRITE_FW(engine, RING_HEAD, ring->head);
> +		if (ENGINE_READ_FW(engine, RING_HEAD) == ring->head)
> +			break;
> +	}
> +
>   	ENGINE_WRITE_FW(engine, RING_TAIL, ring->head);
> -	ENGINE_POSTING_READ(engine, RING_TAIL);
> +	if (ENGINE_READ_FW(engine, RING_HEAD) != ENGINE_READ_FW(engine, RING_TAIL)) {
> +		ENGINE_TRACE(engine, "failed to reset empty ring: [%x, %x]: %x\n",
> +			     ENGINE_READ_FW(engine, RING_HEAD),
> +			     ENGINE_READ_FW(engine, RING_TAIL),
> +			     ring->head);
> +		goto err;
> +	}
>   
>   	ENGINE_WRITE_FW(engine, RING_CTL,
>   			RING_CTL_SIZE(ring->size) | RING_VALID);
> @@ -239,12 +251,16 @@ static int xcs_resume(struct intel_engine_cs *engine)
>   	if (__intel_wait_for_register_fw(engine->uncore,
>   					 RING_CTL(engine->mmio_base),
>   					 RING_VALID, RING_VALID,
> -					 5000, 0, NULL))
> +					 5000, 0, NULL)) {
> +		ENGINE_TRACE(engine, "failed to restart\n");
>   		goto err;
> +	}
>   
> -	if (GRAPHICS_VER(engine->i915) > 2)
> +	if (GRAPHICS_VER(engine->i915) > 2) {
>   		ENGINE_WRITE_FW(engine,
>   				RING_MI_MODE, _MASKED_BIT_DISABLE(STOP_RING));
> +		ENGINE_POSTING_READ(engine, RING_MI_MODE);
> +	}
>   
>   	/* Now awake, let it get started */
>   	if (ring->tail != ring->head) {
> @@ -257,16 +273,16 @@ static int xcs_resume(struct intel_engine_cs *engine)
>   	return 0;
>   
>   err:
> -	drm_err(&engine->i915->drm,
> -		"%s initialization failed; "
> -		"ctl %08x (valid? %d) head %08x [%08x] tail %08x [%08x] start %08x [expected %08x]\n",
> -		engine->name,
> -		ENGINE_READ(engine, RING_CTL),
> -		ENGINE_READ(engine, RING_CTL) & RING_VALID,
> -		ENGINE_READ(engine, RING_HEAD), ring->head,
> -		ENGINE_READ(engine, RING_TAIL), ring->tail,
> -		ENGINE_READ(engine, RING_START),
> -		i915_ggtt_offset(ring->vma));
> +	ENGINE_TRACE(engine,
> +		     "initialization failed; "
> +		     "ctl %08x (valid? %d) head %08x [%08x] tail %08x [%08x] start %08x [expected %08x]\n",
> +		     ENGINE_READ(engine, RING_CTL),
> +		     ENGINE_READ(engine, RING_CTL) & RING_VALID,
> +		     ENGINE_READ(engine, RING_HEAD), ring->head,
> +		     ENGINE_READ(engine, RING_TAIL), ring->tail,
> +		     ENGINE_READ(engine, RING_START),
> +		     i915_ggtt_offset(ring->vma));
> +	GEM_TRACE_DUMP();
>   	return -EIO;
>   }
>   
> diff --git a/drivers/gpu/drm/i915/i915_utils.h b/drivers/gpu/drm/i915/i915_utils.h
> index c10d68cdc3ca..717fb6b9cc15 100644
> --- a/drivers/gpu/drm/i915/i915_utils.h
> +++ b/drivers/gpu/drm/i915/i915_utils.h
> @@ -256,6 +256,16 @@ wait_remaining_ms_from_jiffies(unsigned long timestamp_jiffies, int to_wait_ms)
>   	}
>   }
>   
> +/**
> + * until_timeout_ns - Keep retrying (busy spin) until the duration has passed
> + * @end: temporary var to be used to track the spent time
> + * @timeout_ns: Maximum timeout, in nanosseconds
> + */
> +#define until_timeout_ns(end, timeout_ns) \
> +	for ((end) = ktime_get() + (timeout_ns); \
> +	     ktime_before(ktime_get(), (end)); \
> +	     cpu_relax())
> +
>   /**
>    * __wait_for - magic wait macro
>    *


^ permalink raw reply	[flat|nested] 6+ messages in thread

* [Intel-gfx] ✗ Fi.CI.IGT: failure for drm/i915/gt: Retry RING_HEAD reset until it sticks
  2022-07-15  8:26 [Intel-gfx] [PATCH RFC] drm/i915/gt: Retry RING_HEAD reset until it sticks Mauro Carvalho Chehab
                   ` (2 preceding siblings ...)
  2022-07-15 10:11 ` [Intel-gfx] [PATCH RFC] " Andrzej Hajda
@ 2022-07-15 12:20 ` Patchwork
  2022-07-15 20:28 ` [Intel-gfx] [PATCH RFC] " Rodrigo Vivi
  4 siblings, 0 replies; 6+ messages in thread
From: Patchwork @ 2022-07-15 12:20 UTC (permalink / raw)
  To: Mauro Carvalho Chehab; +Cc: intel-gfx

[-- Attachment #1: Type: text/plain, Size: 38628 bytes --]

== Series Details ==

Series: drm/i915/gt: Retry RING_HEAD reset until it sticks
URL   : https://patchwork.freedesktop.org/series/106377/
State : failure

== Summary ==

CI Bug Log - changes from CI_DRM_11900_full -> Patchwork_106377v1_full
====================================================

Summary
-------

  **FAILURE**

  Serious unknown changes coming with Patchwork_106377v1_full absolutely need to be
  verified manually.
  
  If you think the reported changes have nothing to do with the changes
  introduced in Patchwork_106377v1_full, please notify your bug team to allow them
  to document this new failure mode, which will reduce false positives in CI.

  

Participating hosts (12 -> 12)
------------------------------

  No changes in participating hosts

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

  Here are the unknown changes that may have been introduced in Patchwork_106377v1_full:

### IGT changes ###

#### Possible regressions ####

  * igt@kms_panel_fitting@atomic-fastset@pipe-b-edp-1:
    - shard-tglb:         [PASS][1] -> [INCOMPLETE][2]
   [1]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-tglb3/igt@kms_panel_fitting@atomic-fastset@pipe-b-edp-1.html
   [2]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-tglb8/igt@kms_panel_fitting@atomic-fastset@pipe-b-edp-1.html

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

  Here are the changes found in Patchwork_106377v1_full that come from known issues:

### IGT changes ###

#### Issues hit ####

  * igt@gem_create@create-massive:
    - shard-apl:          NOTRUN -> [DMESG-WARN][3] ([i915#4991])
   [3]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-apl7/igt@gem_create@create-massive.html

  * igt@gem_ctx_exec@basic-nohangcheck:
    - shard-tglb:         [PASS][4] -> [FAIL][5] ([i915#6268])
   [4]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-tglb7/igt@gem_ctx_exec@basic-nohangcheck.html
   [5]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-tglb7/igt@gem_ctx_exec@basic-nohangcheck.html

  * igt@gem_eio@unwedge-stress:
    - shard-iclb:         [PASS][6] -> [TIMEOUT][7] ([i915#3070])
   [6]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-iclb5/igt@gem_eio@unwedge-stress.html
   [7]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-iclb4/igt@gem_eio@unwedge-stress.html

  * igt@gem_exec_fair@basic-none@rcs0:
    - shard-kbl:          [PASS][8] -> [FAIL][9] ([i915#2842])
   [8]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-kbl4/igt@gem_exec_fair@basic-none@rcs0.html
   [9]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-kbl1/igt@gem_exec_fair@basic-none@rcs0.html

  * igt@gem_exec_fair@basic-pace@rcs0:
    - shard-glk:          [PASS][10] -> [FAIL][11] ([i915#2842])
   [10]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-glk2/igt@gem_exec_fair@basic-pace@rcs0.html
   [11]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-glk2/igt@gem_exec_fair@basic-pace@rcs0.html
    - shard-iclb:         [PASS][12] -> [FAIL][13] ([i915#2842]) +1 similar issue
   [12]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-iclb6/igt@gem_exec_fair@basic-pace@rcs0.html
   [13]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-iclb8/igt@gem_exec_fair@basic-pace@rcs0.html

  * igt@gem_huc_copy@huc-copy:
    - shard-tglb:         [PASS][14] -> [SKIP][15] ([i915#2190])
   [14]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-tglb2/igt@gem_huc_copy@huc-copy.html
   [15]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-tglb7/igt@gem_huc_copy@huc-copy.html

  * igt@gem_lmem_swapping@basic:
    - shard-glk:          NOTRUN -> [SKIP][16] ([fdo#109271] / [i915#4613])
   [16]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-glk5/igt@gem_lmem_swapping@basic.html

  * igt@gem_lmem_swapping@parallel-random-verify:
    - shard-kbl:          NOTRUN -> [SKIP][17] ([fdo#109271] / [i915#4613])
   [17]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-kbl1/igt@gem_lmem_swapping@parallel-random-verify.html

  * igt@gem_lmem_swapping@verify:
    - shard-apl:          NOTRUN -> [SKIP][18] ([fdo#109271] / [i915#4613]) +3 similar issues
   [18]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-apl6/igt@gem_lmem_swapping@verify.html

  * igt@gem_lmem_swapping@verify-random:
    - shard-skl:          NOTRUN -> [SKIP][19] ([fdo#109271] / [i915#4613])
   [19]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-skl9/igt@gem_lmem_swapping@verify-random.html

  * igt@i915_pm_dc@dc6-dpms:
    - shard-kbl:          NOTRUN -> [FAIL][20] ([i915#454])
   [20]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-kbl1/igt@i915_pm_dc@dc6-dpms.html

  * igt@i915_pm_dc@dc6-psr:
    - shard-iclb:         [PASS][21] -> [FAIL][22] ([i915#454])
   [21]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-iclb7/igt@i915_pm_dc@dc6-psr.html
   [22]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-iclb8/igt@i915_pm_dc@dc6-psr.html

  * igt@i915_suspend@forcewake:
    - shard-kbl:          [PASS][23] -> [DMESG-WARN][24] ([i915#180]) +4 similar issues
   [23]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-kbl6/igt@i915_suspend@forcewake.html
   [24]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-kbl7/igt@i915_suspend@forcewake.html

  * igt@kms_ccs@pipe-b-bad-rotation-90-y_tiled_gen12_rc_ccs_cc:
    - shard-glk:          NOTRUN -> [SKIP][25] ([fdo#109271] / [i915#3886]) +4 similar issues
   [25]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-glk5/igt@kms_ccs@pipe-b-bad-rotation-90-y_tiled_gen12_rc_ccs_cc.html

  * igt@kms_ccs@pipe-c-bad-aux-stride-y_tiled_gen12_rc_ccs_cc:
    - shard-kbl:          NOTRUN -> [SKIP][26] ([fdo#109271] / [i915#3886]) +3 similar issues
   [26]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-kbl1/igt@kms_ccs@pipe-c-bad-aux-stride-y_tiled_gen12_rc_ccs_cc.html

  * igt@kms_ccs@pipe-c-crc-primary-basic-y_tiled_gen12_mc_ccs:
    - shard-apl:          NOTRUN -> [SKIP][27] ([fdo#109271] / [i915#3886]) +4 similar issues
   [27]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-apl8/igt@kms_ccs@pipe-c-crc-primary-basic-y_tiled_gen12_mc_ccs.html

  * igt@kms_ccs@pipe-c-random-ccs-data-y_tiled_gen12_mc_ccs:
    - shard-skl:          NOTRUN -> [SKIP][28] ([fdo#109271] / [i915#3886]) +3 similar issues
   [28]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-skl9/igt@kms_ccs@pipe-c-random-ccs-data-y_tiled_gen12_mc_ccs.html

  * igt@kms_chamelium@dp-hpd-for-each-pipe:
    - shard-kbl:          NOTRUN -> [SKIP][29] ([fdo#109271] / [fdo#111827]) +2 similar issues
   [29]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-kbl1/igt@kms_chamelium@dp-hpd-for-each-pipe.html

  * igt@kms_chamelium@hdmi-crc-nonplanar-formats:
    - shard-glk:          NOTRUN -> [SKIP][30] ([fdo#109271] / [fdo#111827]) +3 similar issues
   [30]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-glk5/igt@kms_chamelium@hdmi-crc-nonplanar-formats.html

  * igt@kms_chamelium@hdmi-hpd-storm:
    - shard-apl:          NOTRUN -> [SKIP][31] ([fdo#109271] / [fdo#111827]) +16 similar issues
   [31]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-apl7/igt@kms_chamelium@hdmi-hpd-storm.html

  * igt@kms_color_chamelium@pipe-b-ctm-red-to-blue:
    - shard-skl:          NOTRUN -> [SKIP][32] ([fdo#109271] / [fdo#111827]) +2 similar issues
   [32]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-skl9/igt@kms_color_chamelium@pipe-b-ctm-red-to-blue.html

  * igt@kms_cursor_crc@cursor-suspend@pipe-a-dp-1:
    - shard-apl:          [PASS][33] -> [DMESG-WARN][34] ([i915#180]) +2 similar issues
   [33]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-apl7/igt@kms_cursor_crc@cursor-suspend@pipe-a-dp-1.html
   [34]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-apl7/igt@kms_cursor_crc@cursor-suspend@pipe-a-dp-1.html

  * igt@kms_flip@flip-vs-suspend@a-dp1:
    - shard-apl:          NOTRUN -> [DMESG-WARN][35] ([i915#180]) +1 similar issue
   [35]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-apl6/igt@kms_flip@flip-vs-suspend@a-dp1.html

  * igt@kms_flip@plain-flip-fb-recreate@c-edp1:
    - shard-skl:          NOTRUN -> [FAIL][36] ([i915#2122])
   [36]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-skl9/igt@kms_flip@plain-flip-fb-recreate@c-edp1.html

  * igt@kms_flip_scaled_crc@flip-32bpp-ytile-to-32bpp-ytileccs-downscaling@pipe-a-default-mode:
    - shard-iclb:         NOTRUN -> [SKIP][37] ([i915#3555])
   [37]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-iclb2/igt@kms_flip_scaled_crc@flip-32bpp-ytile-to-32bpp-ytileccs-downscaling@pipe-a-default-mode.html

  * igt@kms_flip_scaled_crc@flip-32bpp-ytile-to-32bpp-ytilegen12rcccs-downscaling@pipe-a-valid-mode:
    - shard-iclb:         NOTRUN -> [SKIP][38] ([i915#2672]) +8 similar issues
   [38]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-iclb8/igt@kms_flip_scaled_crc@flip-32bpp-ytile-to-32bpp-ytilegen12rcccs-downscaling@pipe-a-valid-mode.html

  * igt@kms_frontbuffer_tracking@fbc-2p-scndscrn-cur-indfb-draw-blt:
    - shard-skl:          NOTRUN -> [SKIP][39] ([fdo#109271]) +41 similar issues
   [39]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-skl9/igt@kms_frontbuffer_tracking@fbc-2p-scndscrn-cur-indfb-draw-blt.html

  * igt@kms_frontbuffer_tracking@psr-2p-scndscrn-spr-indfb-draw-render:
    - shard-apl:          NOTRUN -> [SKIP][40] ([fdo#109271]) +180 similar issues
   [40]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-apl7/igt@kms_frontbuffer_tracking@psr-2p-scndscrn-spr-indfb-draw-render.html

  * igt@kms_plane_alpha_blend@pipe-a-alpha-transparent-fb:
    - shard-apl:          NOTRUN -> [FAIL][41] ([i915#265])
   [41]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-apl4/igt@kms_plane_alpha_blend@pipe-a-alpha-transparent-fb.html

  * igt@kms_plane_alpha_blend@pipe-b-alpha-opaque-fb:
    - shard-skl:          NOTRUN -> [FAIL][42] ([fdo#108145] / [i915#265])
   [42]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-skl9/igt@kms_plane_alpha_blend@pipe-b-alpha-opaque-fb.html

  * igt@kms_plane_alpha_blend@pipe-c-alpha-basic:
    - shard-apl:          NOTRUN -> [FAIL][43] ([fdo#108145] / [i915#265])
   [43]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-apl8/igt@kms_plane_alpha_blend@pipe-c-alpha-basic.html

  * igt@kms_plane_alpha_blend@pipe-c-constant-alpha-min:
    - shard-skl:          [PASS][44] -> [FAIL][45] ([fdo#108145] / [i915#265])
   [44]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-skl1/igt@kms_plane_alpha_blend@pipe-c-constant-alpha-min.html
   [45]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-skl6/igt@kms_plane_alpha_blend@pipe-c-constant-alpha-min.html

  * igt@kms_plane_scaling@plane-downscale-with-pixel-format-factor-0-5@pipe-a-edp-1:
    - shard-iclb:         [PASS][46] -> [SKIP][47] ([i915#5176]) +2 similar issues
   [46]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-iclb5/igt@kms_plane_scaling@plane-downscale-with-pixel-format-factor-0-5@pipe-a-edp-1.html
   [47]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-iclb2/igt@kms_plane_scaling@plane-downscale-with-pixel-format-factor-0-5@pipe-a-edp-1.html

  * igt@kms_plane_scaling@planes-unity-scaling-downscale-factor-0-5@pipe-a-edp-1:
    - shard-iclb:         [PASS][48] -> [SKIP][49] ([i915#5235]) +2 similar issues
   [48]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-iclb3/igt@kms_plane_scaling@planes-unity-scaling-downscale-factor-0-5@pipe-a-edp-1.html
   [49]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-iclb2/igt@kms_plane_scaling@planes-unity-scaling-downscale-factor-0-5@pipe-a-edp-1.html

  * igt@kms_psr2_sf@cursor-plane-move-continuous-exceed-sf:
    - shard-kbl:          NOTRUN -> [SKIP][50] ([fdo#109271] / [i915#658])
   [50]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-kbl1/igt@kms_psr2_sf@cursor-plane-move-continuous-exceed-sf.html

  * igt@kms_psr2_sf@overlay-plane-update-continuous-sf:
    - shard-glk:          NOTRUN -> [SKIP][51] ([fdo#109271] / [i915#658])
   [51]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-glk5/igt@kms_psr2_sf@overlay-plane-update-continuous-sf.html

  * igt@kms_psr2_sf@overlay-primary-update-sf-dmg-area:
    - shard-apl:          NOTRUN -> [SKIP][52] ([fdo#109271] / [i915#658]) +1 similar issue
   [52]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-apl4/igt@kms_psr2_sf@overlay-primary-update-sf-dmg-area.html

  * igt@kms_psr@psr2_cursor_plane_move:
    - shard-iclb:         [PASS][53] -> [SKIP][54] ([fdo#109441]) +2 similar issues
   [53]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-iclb2/igt@kms_psr@psr2_cursor_plane_move.html
   [54]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-iclb6/igt@kms_psr@psr2_cursor_plane_move.html

  * igt@kms_writeback@writeback-check-output:
    - shard-apl:          NOTRUN -> [SKIP][55] ([fdo#109271] / [i915#2437]) +1 similar issue
   [55]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-apl7/igt@kms_writeback@writeback-check-output.html

  * igt@prime_nv_api@nv_self_import:
    - shard-glk:          NOTRUN -> [SKIP][56] ([fdo#109271]) +41 similar issues
   [56]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-glk5/igt@prime_nv_api@nv_self_import.html

  * igt@prime_nv_pcopy@test2:
    - shard-kbl:          NOTRUN -> [SKIP][57] ([fdo#109271]) +33 similar issues
   [57]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-kbl1/igt@prime_nv_pcopy@test2.html

  * igt@sysfs_clients@fair-1:
    - shard-glk:          NOTRUN -> [SKIP][58] ([fdo#109271] / [i915#2994])
   [58]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-glk5/igt@sysfs_clients@fair-1.html

  * igt@sysfs_clients@pidname:
    - shard-skl:          NOTRUN -> [SKIP][59] ([fdo#109271] / [i915#2994])
   [59]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-skl9/igt@sysfs_clients@pidname.html

  * igt@sysfs_clients@sema-25:
    - shard-apl:          NOTRUN -> [SKIP][60] ([fdo#109271] / [i915#2994]) +2 similar issues
   [60]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-apl4/igt@sysfs_clients@sema-25.html

  
#### Possible fixes ####

  * igt@fbdev@info:
    - {shard-rkl}:        [SKIP][61] ([i915#2582]) -> [PASS][62]
   [61]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-rkl-1/igt@fbdev@info.html
   [62]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-rkl-6/igt@fbdev@info.html

  * igt@gem_ctx_exec@basic-nohangcheck:
    - {shard-rkl}:        [FAIL][63] ([i915#6268]) -> [PASS][64]
   [63]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-rkl-2/igt@gem_ctx_exec@basic-nohangcheck.html
   [64]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-rkl-2/igt@gem_ctx_exec@basic-nohangcheck.html

  * igt@gem_eio@in-flight-suspend:
    - shard-kbl:          [DMESG-WARN][65] ([i915#180]) -> [PASS][66]
   [65]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-kbl7/igt@gem_eio@in-flight-suspend.html
   [66]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-kbl1/igt@gem_eio@in-flight-suspend.html

  * igt@gem_eio@kms:
    - shard-tglb:         [FAIL][67] ([i915#5784]) -> [PASS][68] +1 similar issue
   [67]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-tglb2/igt@gem_eio@kms.html
   [68]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-tglb7/igt@gem_eio@kms.html

  * igt@gem_eio@unwedge-stress:
    - {shard-rkl}:        [TIMEOUT][69] ([i915#3063]) -> [PASS][70]
   [69]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-rkl-2/igt@gem_eio@unwedge-stress.html
   [70]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-rkl-5/igt@gem_eio@unwedge-stress.html

  * igt@gem_exec_endless@dispatch@bcs0:
    - shard-tglb:         [INCOMPLETE][71] ([i915#3778]) -> [PASS][72]
   [71]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-tglb5/igt@gem_exec_endless@dispatch@bcs0.html
   [72]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-tglb8/igt@gem_exec_endless@dispatch@bcs0.html

  * igt@gem_exec_fair@basic-deadline:
    - shard-glk:          [FAIL][73] ([i915#2846]) -> [PASS][74]
   [73]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-glk6/igt@gem_exec_fair@basic-deadline.html
   [74]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-glk2/igt@gem_exec_fair@basic-deadline.html

  * igt@gem_exec_fair@basic-none-share@rcs0:
    - {shard-tglu}:       [FAIL][75] ([i915#2842]) -> [PASS][76]
   [75]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-tglu-5/igt@gem_exec_fair@basic-none-share@rcs0.html
   [76]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-tglu-8/igt@gem_exec_fair@basic-none-share@rcs0.html

  * igt@gem_exec_fair@basic-none@vcs1:
    - shard-kbl:          [FAIL][77] ([i915#2842]) -> [PASS][78] +2 similar issues
   [77]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-kbl4/igt@gem_exec_fair@basic-none@vcs1.html
   [78]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-kbl1/igt@gem_exec_fair@basic-none@vcs1.html

  * igt@gem_exec_fair@basic-pace-share@rcs0:
    - shard-tglb:         [FAIL][79] ([i915#2842]) -> [PASS][80]
   [79]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-tglb8/igt@gem_exec_fair@basic-pace-share@rcs0.html
   [80]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-tglb6/igt@gem_exec_fair@basic-pace-share@rcs0.html

  * igt@gem_exec_fair@basic-pace@vecs0:
    - {shard-rkl}:        [FAIL][81] ([i915#2842]) -> [PASS][82] +2 similar issues
   [81]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-rkl-2/igt@gem_exec_fair@basic-pace@vecs0.html
   [82]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-rkl-5/igt@gem_exec_fair@basic-pace@vecs0.html

  * igt@gem_exec_fair@basic-throttle@rcs0:
    - shard-iclb:         [FAIL][83] ([i915#2842]) -> [PASS][84]
   [83]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-iclb2/igt@gem_exec_fair@basic-throttle@rcs0.html
   [84]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-iclb6/igt@gem_exec_fair@basic-throttle@rcs0.html

  * igt@gem_exec_reloc@basic-gtt-cpu:
    - {shard-rkl}:        [SKIP][85] ([i915#3281]) -> [PASS][86] +9 similar issues
   [85]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-rkl-2/igt@gem_exec_reloc@basic-gtt-cpu.html
   [86]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-rkl-5/igt@gem_exec_reloc@basic-gtt-cpu.html

  * igt@gem_mmap_gtt@coherency:
    - {shard-rkl}:        [SKIP][87] ([fdo#111656]) -> [PASS][88]
   [87]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-rkl-2/igt@gem_mmap_gtt@coherency.html
   [88]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-rkl-5/igt@gem_mmap_gtt@coherency.html

  * igt@gem_partial_pwrite_pread@write-display:
    - {shard-rkl}:        [SKIP][89] ([i915#3282]) -> [PASS][90] +2 similar issues
   [89]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-rkl-2/igt@gem_partial_pwrite_pread@write-display.html
   [90]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-rkl-5/igt@gem_partial_pwrite_pread@write-display.html

  * igt@gen9_exec_parse@allowed-single:
    - shard-glk:          [DMESG-WARN][91] ([i915#5566] / [i915#716]) -> [PASS][92]
   [91]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-glk9/igt@gen9_exec_parse@allowed-single.html
   [92]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-glk5/igt@gen9_exec_parse@allowed-single.html

  * igt@gen9_exec_parse@bb-secure:
    - {shard-rkl}:        [SKIP][93] ([i915#2527]) -> [PASS][94]
   [93]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-rkl-2/igt@gen9_exec_parse@bb-secure.html
   [94]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-rkl-5/igt@gen9_exec_parse@bb-secure.html

  * igt@i915_pm_rc6_residency@rc6-idle@vcs0:
    - {shard-rkl}:        [WARN][95] ([i915#6405]) -> [PASS][96]
   [95]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-rkl-5/igt@i915_pm_rc6_residency@rc6-idle@vcs0.html
   [96]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-rkl-2/igt@i915_pm_rc6_residency@rc6-idle@vcs0.html

  * igt@i915_pm_rpm@dpms-lpsp:
    - {shard-rkl}:        [SKIP][97] ([i915#1397]) -> [PASS][98] +1 similar issue
   [97]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-rkl-1/igt@i915_pm_rpm@dpms-lpsp.html
   [98]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-rkl-6/igt@i915_pm_rpm@dpms-lpsp.html

  * igt@i915_pm_rps@waitboost:
    - {shard-rkl}:        [FAIL][99] ([i915#4016]) -> [PASS][100]
   [99]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-rkl-1/igt@i915_pm_rps@waitboost.html
   [100]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-rkl-6/igt@i915_pm_rps@waitboost.html

  * igt@i915_suspend@debugfs-reader:
    - shard-apl:          [DMESG-WARN][101] ([i915#180]) -> [PASS][102] +5 similar issues
   [101]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-apl3/igt@i915_suspend@debugfs-reader.html
   [102]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-apl3/igt@i915_suspend@debugfs-reader.html

  * igt@kms_cursor_legacy@2x-long-flip-vs-cursor-legacy:
    - shard-glk:          [FAIL][103] ([i915#72]) -> [PASS][104]
   [103]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-glk1/igt@kms_cursor_legacy@2x-long-flip-vs-cursor-legacy.html
   [104]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-glk7/igt@kms_cursor_legacy@2x-long-flip-vs-cursor-legacy.html

  * igt@kms_draw_crc@draw-method-xrgb2101010-mmap-gtt-ytiled:
    - {shard-rkl}:        [SKIP][105] ([fdo#111314] / [i915#4098] / [i915#4369]) -> [PASS][106] +6 similar issues
   [105]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-rkl-2/igt@kms_draw_crc@draw-method-xrgb2101010-mmap-gtt-ytiled.html
   [106]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-rkl-6/igt@kms_draw_crc@draw-method-xrgb2101010-mmap-gtt-ytiled.html

  * igt@kms_flip@flip-vs-expired-vblank@b-hdmi-a1:
    - shard-glk:          [FAIL][107] ([i915#79]) -> [PASS][108]
   [107]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-glk9/igt@kms_flip@flip-vs-expired-vblank@b-hdmi-a1.html
   [108]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-glk9/igt@kms_flip@flip-vs-expired-vblank@b-hdmi-a1.html

  * igt@kms_flip@plain-flip-fb-recreate-interruptible@c-hdmi-a1:
    - shard-glk:          [FAIL][109] ([i915#2122]) -> [PASS][110]
   [109]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-glk1/igt@kms_flip@plain-flip-fb-recreate-interruptible@c-hdmi-a1.html
   [110]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-glk8/igt@kms_flip@plain-flip-fb-recreate-interruptible@c-hdmi-a1.html

  * igt@kms_flip@plain-flip-ts-check-interruptible@b-edp1:
    - shard-skl:          [FAIL][111] ([i915#2122]) -> [PASS][112]
   [111]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-skl2/igt@kms_flip@plain-flip-ts-check-interruptible@b-edp1.html
   [112]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-skl5/igt@kms_flip@plain-flip-ts-check-interruptible@b-edp1.html

  * igt@kms_frontbuffer_tracking@psr-1p-primscrn-cur-indfb-move:
    - {shard-rkl}:        [SKIP][113] ([i915#1849] / [i915#4098]) -> [PASS][114] +17 similar issues
   [113]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-rkl-1/igt@kms_frontbuffer_tracking@psr-1p-primscrn-cur-indfb-move.html
   [114]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-rkl-6/igt@kms_frontbuffer_tracking@psr-1p-primscrn-cur-indfb-move.html

  * igt@kms_hdr@bpc-switch-suspend@pipe-a-dp-1:
    - shard-kbl:          [FAIL][115] ([i915#1188]) -> [PASS][116]
   [115]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-kbl1/igt@kms_hdr@bpc-switch-suspend@pipe-a-dp-1.html
   [116]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-kbl1/igt@kms_hdr@bpc-switch-suspend@pipe-a-dp-1.html

  * igt@kms_plane@pixel-format@pipe-a-planes:
    - {shard-rkl}:        [SKIP][117] ([i915#3558]) -> [PASS][118] +1 similar issue
   [117]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-rkl-1/igt@kms_plane@pixel-format@pipe-a-planes.html
   [118]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-rkl-6/igt@kms_plane@pixel-format@pipe-a-planes.html

  * igt@kms_plane_alpha_blend@pipe-b-alpha-basic:
    - {shard-rkl}:        [SKIP][119] ([i915#1849] / [i915#4070] / [i915#4098]) -> [PASS][120]
   [119]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-rkl-2/igt@kms_plane_alpha_blend@pipe-b-alpha-basic.html
   [120]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-rkl-6/igt@kms_plane_alpha_blend@pipe-b-alpha-basic.html

  * igt@kms_plane_multiple@atomic-pipe-b-tiling-none:
    - {shard-rkl}:        [SKIP][121] ([i915#1849] / [i915#3558] / [i915#4070]) -> [PASS][122]
   [121]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-rkl-2/igt@kms_plane_multiple@atomic-pipe-b-tiling-none.html
   [122]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-rkl-6/igt@kms_plane_multiple@atomic-pipe-b-tiling-none.html

  * igt@kms_properties@crtc-properties-legacy:
    - {shard-rkl}:        [SKIP][123] ([i915#1849]) -> [PASS][124] +1 similar issue
   [123]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-rkl-1/igt@kms_properties@crtc-properties-legacy.html
   [124]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-rkl-6/igt@kms_properties@crtc-properties-legacy.html

  * igt@kms_psr@primary_render:
    - {shard-rkl}:        [SKIP][125] ([i915#1072]) -> [PASS][126] +3 similar issues
   [125]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-rkl-2/igt@kms_psr@primary_render.html
   [126]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-rkl-6/igt@kms_psr@primary_render.html

  * igt@kms_psr@psr2_primary_mmap_gtt:
    - shard-iclb:         [SKIP][127] ([fdo#109441]) -> [PASS][128] +2 similar issues
   [127]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-iclb3/igt@kms_psr@psr2_primary_mmap_gtt.html
   [128]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-iclb2/igt@kms_psr@psr2_primary_mmap_gtt.html

  * igt@kms_psr_stress_test@flip-primary-invalidate-overlay:
    - {shard-rkl}:        [SKIP][129] ([i915#5461]) -> [PASS][130]
   [129]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-rkl-2/igt@kms_psr_stress_test@flip-primary-invalidate-overlay.html
   [130]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-rkl-6/igt@kms_psr_stress_test@flip-primary-invalidate-overlay.html

  * igt@kms_universal_plane@universal-plane-gen9-features-pipe-a:
    - {shard-rkl}:        [SKIP][131] ([i915#1845] / [i915#4070] / [i915#4098]) -> [PASS][132] +2 similar issues
   [131]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-rkl-1/igt@kms_universal_plane@universal-plane-gen9-features-pipe-a.html
   [132]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-rkl-6/igt@kms_universal_plane@universal-plane-gen9-features-pipe-a.html

  * igt@kms_vblank@pipe-a-wait-forked-busy-hang:
    - {shard-rkl}:        [SKIP][133] ([i915#1845] / [i915#4098]) -> [PASS][134] +27 similar issues
   [133]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-rkl-2/igt@kms_vblank@pipe-a-wait-forked-busy-hang.html
   [134]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-rkl-6/igt@kms_vblank@pipe-a-wait-forked-busy-hang.html

  * igt@perf@polling-small-buf:
    - {shard-rkl}:        [FAIL][135] ([i915#1722]) -> [PASS][136]
   [135]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-rkl-2/igt@perf@polling-small-buf.html
   [136]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-rkl-6/igt@perf@polling-small-buf.html

  * igt@prime_vgem@basic-fence-read:
    - {shard-rkl}:        [SKIP][137] ([fdo#109295] / [i915#3291] / [i915#3708]) -> [PASS][138]
   [137]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-rkl-2/igt@prime_vgem@basic-fence-read.html
   [138]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-rkl-5/igt@prime_vgem@basic-fence-read.html

  
#### Warnings ####

  * igt@nouveau_crc@pipe-d-source-rg:
    - shard-skl:          [SKIP][139] ([fdo#109271] / [i915#1888]) -> [SKIP][140] ([fdo#109271])
   [139]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-skl2/igt@nouveau_crc@pipe-d-source-rg.html
   [140]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-skl5/igt@nouveau_crc@pipe-d-source-rg.html

  * igt@runner@aborted:
    - shard-skl:          ([FAIL][141], [FAIL][142]) ([i915#3002] / [i915#4312] / [i915#5257]) -> ([FAIL][143], [FAIL][144], [FAIL][145]) ([i915#2029] / [i915#3002] / [i915#4312] / [i915#5257])
   [141]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-skl10/igt@runner@aborted.html
   [142]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-skl10/igt@runner@aborted.html
   [143]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-skl5/igt@runner@aborted.html
   [144]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-skl5/igt@runner@aborted.html
   [145]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-skl10/igt@runner@aborted.html
    - shard-kbl:          ([FAIL][146], [FAIL][147], [FAIL][148]) ([i915#3002] / [i915#4312] / [i915#5257]) -> ([FAIL][149], [FAIL][150], [FAIL][151], [FAIL][152], [FAIL][153], [FAIL][154]) ([i915#180] / [i915#3002] / [i915#4312] / [i915#5257])
   [146]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-kbl7/igt@runner@aborted.html
   [147]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-kbl6/igt@runner@aborted.html
   [148]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_11900/shard-kbl1/igt@runner@aborted.html
   [149]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-kbl7/igt@runner@aborted.html
   [150]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-kbl4/igt@runner@aborted.html
   [151]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-kbl7/igt@runner@aborted.html
   [152]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-kbl4/igt@runner@aborted.html
   [153]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-kbl7/igt@runner@aborted.html
   [154]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/shard-kbl7/igt@runner@aborted.html

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

  [fdo#108145]: https://bugs.freedesktop.org/show_bug.cgi?id=108145
  [fdo#109271]: https://bugs.freedesktop.org/show_bug.cgi?id=109271
  [fdo#109274]: https://bugs.freedesktop.org/show_bug.cgi?id=109274
  [fdo#109285]: https://bugs.freedesktop.org/show_bug.cgi?id=109285
  [fdo#109289]: https://bugs.freedesktop.org/show_bug.cgi?id=109289
  [fdo#109295]: https://bugs.freedesktop.org/show_bug.cgi?id=109295
  [fdo#109300]: https://bugs.freedesktop.org/show_bug.cgi?id=109300
  [fdo#109441]: https://bugs.freedesktop.org/show_bug.cgi?id=109441
  [fdo#110189]: https://bugs.freedesktop.org/show_bug.cgi?id=110189
  [fdo#110723]: https://bugs.freedesktop.org/show_bug.cgi?id=110723
  [fdo#111068]: https://bugs.freedesktop.org/show_bug.cgi?id=111068
  [fdo#111314]: https://bugs.freedesktop.org/show_bug.cgi?id=111314
  [fdo#111614]: https://bugs.freedesktop.org/show_bug.cgi?id=111614
  [fdo#111615]: https://bugs.freedesktop.org/show_bug.cgi?id=111615
  [fdo#111656]: https://bugs.freedesktop.org/show_bug.cgi?id=111656
  [fdo#111825]: https://bugs.freedesktop.org/show_bug.cgi?id=111825
  [fdo#111827]: https://bugs.freedesktop.org/show_bug.cgi?id=111827
  [fdo#112054]: https://bugs.freedesktop.org/show_bug.cgi?id=112054
  [i915#1072]: https://gitlab.freedesktop.org/drm/intel/issues/1072
  [i915#1188]: https://gitlab.freedesktop.org/drm/intel/issues/1188
  [i915#132]: https://gitlab.freedesktop.org/drm/intel/issues/132
  [i915#1397]: https://gitlab.freedesktop.org/drm/intel/issues/1397
  [i915#160]: https://gitlab.freedesktop.org/drm/intel/issues/160
  [i915#1722]: https://gitlab.freedesktop.org/drm/intel/issues/1722
  [i915#180]: https://gitlab.freedesktop.org/drm/intel/issues/180
  [i915#1825]: https://gitlab.freedesktop.org/drm/intel/issues/1825
  [i915#1845]: https://gitlab.freedesktop.org/drm/intel/issues/1845
  [i915#1849]: https://gitlab.freedesktop.org/drm/intel/issues/1849
  [i915#1888]: https://gitlab.freedesktop.org/drm/intel/issues/1888
  [i915#1911]: https://gitlab.freedesktop.org/drm/intel/issues/1911
  [i915#2029]: https://gitlab.freedesktop.org/drm/intel/issues/2029
  [i915#2122]: https://gitlab.freedesktop.org/drm/intel/issues/2122
  [i915#2190]: https://gitlab.freedesktop.org/drm/intel/issues/2190
  [i915#2437]: https://gitlab.freedesktop.org/drm/intel/issues/2437
  [i915#2527]: https://gitlab.freedesktop.org/drm/intel/issues/2527
  [i915#2530]: https://gitlab.freedesktop.org/drm/intel/issues/2530
  [i915#2582]: https://gitlab.freedesktop.org/drm/intel/issues/2582
  [i915#265]: https://gitlab.freedesktop.org/drm/intel/issues/265
  [i915#2658]: https://gitlab.freedesktop.org/drm/intel/issues/2658
  [i915#2672]: https://gitlab.freedesktop.org/drm/intel/issues/2672
  [i915#2842]: https://gitlab.freedesktop.org/drm/intel/issues/2842
  [i915#2846]: https://gitlab.freedesktop.org/drm/intel/issues/2846
  [i915#2920]: https://gitlab.freedesktop.org/drm/intel/issues/2920
  [i915#2994]: https://gitlab.freedesktop.org/drm/intel/issues/2994
  [i915#3002]: https://gitlab.freedesktop.org/drm/intel/issues/3002
  [i915#3012]: https://gitlab.freedesktop.org/drm/intel/issues/3012
  [i915#3063]: https://gitlab.freedesktop.org/drm/intel/issues/3063
  [i915#3070]: https://gitlab.freedesktop.org/drm/intel/issues/3070
  [i915#3116]: https://gitlab.freedesktop.org/drm/intel/issues/3116
  [i915#3281]: https://gitlab.freedesktop.org/drm/intel/issues/3281
  [i915#3282]: https://gitlab.freedesktop.org/drm/intel/issues/3282
  [i915#3291]: https://gitlab.freedesktop.org/drm/intel/issues/3291
  [i915#3359]: https://gitlab.freedesktop.org/drm/intel/issues/3359
  [i915#3555]: https://gitlab.freedesktop.org/drm/intel/issues/3555
  [i915#3558]: https://gitlab.freedesktop.org/drm/intel/issues/3558
  [i915#3637]: https://gitlab.freedesktop.org/drm/intel/issues/3637
  [i915#3638]: https://gitlab.freedesktop.org/drm/intel/issues/3638
  [i915#3689]: https://gitlab.freedesktop.org/drm/intel/issues/3689
  [i915#3708]: https://gitlab.freedesktop.org/drm/intel/issues/3708
  [i915#3734]: https://gitlab.freedesktop.org/drm/intel/issues/3734
  [i915#3778]: https://gitlab.freedesktop.org/drm/intel/issues/3778
  [i915#3886]: https://gitlab.freedesktop.org/drm/intel/issues/3886
  [i915#4016]: https://gitlab.freedesktop.org/drm/intel/issues/4016
  [i915#4070]: https://gitlab.freedesktop.org/drm/intel/issues/4070
  [i915#4098]: https://gitlab.freedesktop.org/drm/intel/issues/4098
  [i915#4270]: https://gitlab.freedesktop.org/drm/intel/issues/4270
  [i915#4312]: https://gitlab.freedesktop.org/drm/intel/issues/4312
  [i915#4369]: https://gitlab.freedesktop.org/drm/intel/issues/4369
  [i915#4462]: https://gitlab.freedesktop.org/drm/intel/issues/4462
  [i915#454]: https://gitlab.freedesktop.org/drm/intel/issues/454
  [i915#4613]: https://gitlab.freedesktop.org/drm/intel/issues/4613
  [i915#4941]: https://gitlab.freedesktop.org/drm/intel/issues/4941
  [i915#4991]: https://gitlab.freedesktop.org/drm/intel/issues/4991
  [i915#5176]: https://gitlab.freedesktop.org/drm/intel/issues/5176
  [i915#5235]: https://gitlab.freedesktop.org/drm/intel/issues/5235
  [i915#5257]: https://gitlab.freedesktop.org/drm/intel/issues/5257
  [i915#5286]: https://gitlab.freedesktop.org/drm/intel/issues/5286
  [i915#5287]: https://gitlab.freedesktop.org/drm/intel/issues/5287
  [i915#5289]: https://gitlab.freedesktop.org/drm/intel/issues/5289
  [i915#5325]: https://gitlab.freedesktop.org/drm/intel/issues/5325
  [i915#5327]: https://gitlab.freedesktop.org/drm/intel/issues/5327
  [i915#533]: https://gitlab.freedesktop.org/drm/intel/issues/533
  [i915#5461]: https://gitlab.freedesktop.org/drm/intel/issues/5461
  [i915#5566]: https://gitlab.freedesktop.org/drm/intel/issues/5566
  [i915#5784]: https://gitlab.freedesktop.org/drm/intel/issues/5784
  [i915#6095]: https://gitlab.freedesktop.org/drm/intel/issues/6095
  [i915#6247]: https://gitlab.freedesktop.org/drm/intel/issues/6247
  [i915#6248]: https://gitlab.freedesktop.org/drm/intel/issues/6248
  [i915#6251]: https://gitlab.freedesktop.org/drm/intel/issues/6251
  [i915#6258]: https://gitlab.freedesktop.org/drm/intel/issues/6258
  [i915#6268]: https://gitlab.freedesktop.org/drm/intel/issues/6268
  [i915#6375]: https://gitlab.freedesktop.org/drm/intel/issues/6375
  [i915#6405]: https://gitlab.freedesktop.org/drm/intel/issues/6405
  [i915#658]: https://gitlab.freedesktop.org/drm/intel/issues/658
  [i915#716]: https://gitlab.freedesktop.org/drm/intel/issues/716
  [i915#72]: https://gitlab.freedesktop.org/drm/intel/issues/72
  [i915#79]: https://gitlab.freedesktop.org/drm/intel/issues/79


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

  * Linux: CI_DRM_11900 -> Patchwork_106377v1

  CI-20190529: 20190529
  CI_DRM_11900: 5218ea24682b8edb1d629323dce5c88a44e225b0 @ git://anongit.freedesktop.org/gfx-ci/linux
  IGT_6585: 1b15ce5ec4cb6693daa9dff042e32f675ba8af76 @ https://gitlab.freedesktop.org/drm/igt-gpu-tools.git
  Patchwork_106377v1: 5218ea24682b8edb1d629323dce5c88a44e225b0 @ git://anongit.freedesktop.org/gfx-ci/linux
  piglit_4509: fdc5a4ca11124ab8413c7988896eec4c97336694 @ git://anongit.freedesktop.org/piglit

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_106377v1/index.html

[-- Attachment #2: Type: text/html, Size: 44406 bytes --]

^ permalink raw reply	[flat|nested] 6+ messages in thread

* Re: [Intel-gfx] [PATCH RFC] drm/i915/gt: Retry RING_HEAD reset until it sticks
  2022-07-15  8:26 [Intel-gfx] [PATCH RFC] drm/i915/gt: Retry RING_HEAD reset until it sticks Mauro Carvalho Chehab
                   ` (3 preceding siblings ...)
  2022-07-15 12:20 ` [Intel-gfx] ✗ Fi.CI.IGT: failure for " Patchwork
@ 2022-07-15 20:28 ` Rodrigo Vivi
  4 siblings, 0 replies; 6+ messages in thread
From: Rodrigo Vivi @ 2022-07-15 20:28 UTC (permalink / raw)
  To: Mauro Carvalho Chehab
  Cc: David Airlie, intel-gfx, linux-kernel, dri-devel, Chris Wilson,
	Matthew Auld, Andrzej Hajda

On Fri, Jul 15, 2022 at 09:26:16AM +0100, Mauro Carvalho Chehab wrote:
> From: Chris Wilson <chris@chris-wilson.co.uk>
> 
> On Haswell, in particular, we see an issue where resets fails because

Can we then make this platform specific?
Only because some older hw doesn't behave like expected we shouldn't
make this a default & global workaround.

> the engine resumes from an incorrect RING_HEAD. Since the RING_HEAD
> doesn't point to the remaining requests to re-run, but may instead point
> into the uninitialised portion of the ring, the GPU may be then fed
> invalid instructions from a privileged context, oft pushing the GPU into
> an unrecoverable hang.
> 
> If at first the write doesn't succeed, try, try again.
> 
> References: https://gitlab.freedesktop.org/drm/intel/-/issues/5432
> Testcase: igt/i915_selftest/hangcheck
> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
> Cc: Andrzej Hajda <andrzej.hajda@intel.com>
> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
> ---
>  .../gpu/drm/i915/gt/intel_ring_submission.c   | 44 +++++++++++++------
>  drivers/gpu/drm/i915/i915_utils.h             | 10 +++++
>  2 files changed, 40 insertions(+), 14 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/gt/intel_ring_submission.c b/drivers/gpu/drm/i915/gt/intel_ring_submission.c
> index d5d6f1fadcae..cc53feb1f8ed 100644
> --- a/drivers/gpu/drm/i915/gt/intel_ring_submission.c
> +++ b/drivers/gpu/drm/i915/gt/intel_ring_submission.c
> @@ -190,6 +190,7 @@ static bool stop_ring(struct intel_engine_cs *engine)
>  static int xcs_resume(struct intel_engine_cs *engine)
>  {
>  	struct intel_ring *ring = engine->legacy.ring;
> +	ktime_t kt;
>  
>  	ENGINE_TRACE(engine, "ring:{HEAD:%04x, TAIL:%04x}\n",
>  		     ring->head, ring->tail);
> @@ -228,9 +229,20 @@ static int xcs_resume(struct intel_engine_cs *engine)
>  	set_pp_dir(engine);
>  
>  	/* First wake the ring up to an empty/idle ring */
> -	ENGINE_WRITE_FW(engine, RING_HEAD, ring->head);
> +	until_timeout_ns(kt, 2 * NSEC_PER_MSEC) {
> +		ENGINE_WRITE_FW(engine, RING_HEAD, ring->head);
> +		if (ENGINE_READ_FW(engine, RING_HEAD) == ring->head)
> +			break;
> +	}
> +
>  	ENGINE_WRITE_FW(engine, RING_TAIL, ring->head);
> -	ENGINE_POSTING_READ(engine, RING_TAIL);
> +	if (ENGINE_READ_FW(engine, RING_HEAD) != ENGINE_READ_FW(engine, RING_TAIL)) {
> +		ENGINE_TRACE(engine, "failed to reset empty ring: [%x, %x]: %x\n",
> +			     ENGINE_READ_FW(engine, RING_HEAD),
> +			     ENGINE_READ_FW(engine, RING_TAIL),
> +			     ring->head);
> +		goto err;
> +	}

commit message mentions until this point I'm afraid... everything below
(except the new until_timeout_ns) looks like a different patch to me,
or deserves some mention in the commit msg.

>  
>  	ENGINE_WRITE_FW(engine, RING_CTL,
>  			RING_CTL_SIZE(ring->size) | RING_VALID);
> @@ -239,12 +251,16 @@ static int xcs_resume(struct intel_engine_cs *engine)
>  	if (__intel_wait_for_register_fw(engine->uncore,
>  					 RING_CTL(engine->mmio_base),
>  					 RING_VALID, RING_VALID,
> -					 5000, 0, NULL))
> +					 5000, 0, NULL)) {
> +		ENGINE_TRACE(engine, "failed to restart\n");
>  		goto err;
> +	}
>  
> -	if (GRAPHICS_VER(engine->i915) > 2)
> +	if (GRAPHICS_VER(engine->i915) > 2) {
>  		ENGINE_WRITE_FW(engine,
>  				RING_MI_MODE, _MASKED_BIT_DISABLE(STOP_RING));
> +		ENGINE_POSTING_READ(engine, RING_MI_MODE);
> +	}
>  
>  	/* Now awake, let it get started */
>  	if (ring->tail != ring->head) {
> @@ -257,16 +273,16 @@ static int xcs_resume(struct intel_engine_cs *engine)
>  	return 0;
>  
>  err:
> -	drm_err(&engine->i915->drm,
> -		"%s initialization failed; "
> -		"ctl %08x (valid? %d) head %08x [%08x] tail %08x [%08x] start %08x [expected %08x]\n",
> -		engine->name,
> -		ENGINE_READ(engine, RING_CTL),
> -		ENGINE_READ(engine, RING_CTL) & RING_VALID,
> -		ENGINE_READ(engine, RING_HEAD), ring->head,
> -		ENGINE_READ(engine, RING_TAIL), ring->tail,
> -		ENGINE_READ(engine, RING_START),
> -		i915_ggtt_offset(ring->vma));
> +	ENGINE_TRACE(engine,
> +		     "initialization failed; "
> +		     "ctl %08x (valid? %d) head %08x [%08x] tail %08x [%08x] start %08x [expected %08x]\n",
> +		     ENGINE_READ(engine, RING_CTL),
> +		     ENGINE_READ(engine, RING_CTL) & RING_VALID,
> +		     ENGINE_READ(engine, RING_HEAD), ring->head,
> +		     ENGINE_READ(engine, RING_TAIL), ring->tail,
> +		     ENGINE_READ(engine, RING_START),
> +		     i915_ggtt_offset(ring->vma));
> +	GEM_TRACE_DUMP();
>  	return -EIO;
>  }
>  
> diff --git a/drivers/gpu/drm/i915/i915_utils.h b/drivers/gpu/drm/i915/i915_utils.h
> index c10d68cdc3ca..717fb6b9cc15 100644
> --- a/drivers/gpu/drm/i915/i915_utils.h
> +++ b/drivers/gpu/drm/i915/i915_utils.h
> @@ -256,6 +256,16 @@ wait_remaining_ms_from_jiffies(unsigned long timestamp_jiffies, int to_wait_ms)
>  	}
>  }
>  
> +/**
> + * until_timeout_ns - Keep retrying (busy spin) until the duration has passed
> + * @end: temporary var to be used to track the spent time
> + * @timeout_ns: Maximum timeout, in nanosseconds
> + */
> +#define until_timeout_ns(end, timeout_ns) \
> +	for ((end) = ktime_get() + (timeout_ns); \
> +	     ktime_before(ktime_get(), (end)); \
> +	     cpu_relax())
> +

why do we need yet another timeout macro and cannot use any of the existent ways?

>  /**
>   * __wait_for - magic wait macro
>   *
> -- 
> 2.36.1
> 
> 

^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2022-07-16 14:41 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2022-07-15  8:26 [Intel-gfx] [PATCH RFC] drm/i915/gt: Retry RING_HEAD reset until it sticks Mauro Carvalho Chehab
2022-07-15  9:27 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for " Patchwork
2022-07-15  9:46 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2022-07-15 10:11 ` [Intel-gfx] [PATCH RFC] " Andrzej Hajda
2022-07-15 12:20 ` [Intel-gfx] ✗ Fi.CI.IGT: failure for " Patchwork
2022-07-15 20:28 ` [Intel-gfx] [PATCH RFC] " Rodrigo Vivi

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