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* [PATCH] drm/i915/gvt: more locking for ppgtt mm LRU list
@ 2020-02-03 15:07 ` Igor Druzhinin
  0 siblings, 0 replies; 9+ messages in thread
From: Igor Druzhinin @ 2020-02-03 15:07 UTC (permalink / raw)
  To: linux-kernel, dri-devel, intel-gfx, intel-gvt-dev
  Cc: zhenyuw, zhi.a.wang, jani.nikula, joonas.lahtinen, rodrigo.vivi,
	airlied, daniel, Igor Druzhinin

When the lock was introduced in 72aabfb862e40 ("drm/i915/gvt: Add mutual
lock for ppgtt mm LRU list") one place got lost.

Signed-off-by: Igor Druzhinin <igor.druzhinin@citrix.com>
---
 drivers/gpu/drm/i915/gvt/gtt.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c
index 34cb404..4a48280 100644
--- a/drivers/gpu/drm/i915/gvt/gtt.c
+++ b/drivers/gpu/drm/i915/gvt/gtt.c
@@ -1956,7 +1956,11 @@ void _intel_vgpu_mm_release(struct kref *mm_ref)
 
 	if (mm->type == INTEL_GVT_MM_PPGTT) {
 		list_del(&mm->ppgtt_mm.list);
+
+		mutex_lock(&mm->vgpu->gvt->gtt.ppgtt_mm_lock);
 		list_del(&mm->ppgtt_mm.lru_list);
+		mutex_unlock(&mm->vgpu->gvt->gtt.ppgtt_mm_lock);
+
 		invalidate_ppgtt_mm(mm);
 	} else {
 		vfree(mm->ggtt_mm.virtual_ggtt);
-- 
2.7.4


^ permalink raw reply	[flat|nested] 9+ messages in thread

* [PATCH] drm/i915/gvt: more locking for ppgtt mm LRU list
@ 2020-02-03 15:07 ` Igor Druzhinin
  0 siblings, 0 replies; 9+ messages in thread
From: Igor Druzhinin @ 2020-02-03 15:07 UTC (permalink / raw)
  To: linux-kernel, dri-devel, intel-gfx, intel-gvt-dev
  Cc: Igor Druzhinin, airlied, rodrigo.vivi, zhi.a.wang

When the lock was introduced in 72aabfb862e40 ("drm/i915/gvt: Add mutual
lock for ppgtt mm LRU list") one place got lost.

Signed-off-by: Igor Druzhinin <igor.druzhinin@citrix.com>
---
 drivers/gpu/drm/i915/gvt/gtt.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c
index 34cb404..4a48280 100644
--- a/drivers/gpu/drm/i915/gvt/gtt.c
+++ b/drivers/gpu/drm/i915/gvt/gtt.c
@@ -1956,7 +1956,11 @@ void _intel_vgpu_mm_release(struct kref *mm_ref)
 
 	if (mm->type == INTEL_GVT_MM_PPGTT) {
 		list_del(&mm->ppgtt_mm.list);
+
+		mutex_lock(&mm->vgpu->gvt->gtt.ppgtt_mm_lock);
 		list_del(&mm->ppgtt_mm.lru_list);
+		mutex_unlock(&mm->vgpu->gvt->gtt.ppgtt_mm_lock);
+
 		invalidate_ppgtt_mm(mm);
 	} else {
 		vfree(mm->ggtt_mm.virtual_ggtt);
-- 
2.7.4

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

^ permalink raw reply	[flat|nested] 9+ messages in thread

* [Intel-gfx] [PATCH] drm/i915/gvt: more locking for ppgtt mm LRU list
@ 2020-02-03 15:07 ` Igor Druzhinin
  0 siblings, 0 replies; 9+ messages in thread
From: Igor Druzhinin @ 2020-02-03 15:07 UTC (permalink / raw)
  To: linux-kernel, dri-devel, intel-gfx, intel-gvt-dev; +Cc: Igor Druzhinin, airlied

When the lock was introduced in 72aabfb862e40 ("drm/i915/gvt: Add mutual
lock for ppgtt mm LRU list") one place got lost.

Signed-off-by: Igor Druzhinin <igor.druzhinin@citrix.com>
---
 drivers/gpu/drm/i915/gvt/gtt.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c
index 34cb404..4a48280 100644
--- a/drivers/gpu/drm/i915/gvt/gtt.c
+++ b/drivers/gpu/drm/i915/gvt/gtt.c
@@ -1956,7 +1956,11 @@ void _intel_vgpu_mm_release(struct kref *mm_ref)
 
 	if (mm->type == INTEL_GVT_MM_PPGTT) {
 		list_del(&mm->ppgtt_mm.list);
+
+		mutex_lock(&mm->vgpu->gvt->gtt.ppgtt_mm_lock);
 		list_del(&mm->ppgtt_mm.lru_list);
+		mutex_unlock(&mm->vgpu->gvt->gtt.ppgtt_mm_lock);
+
 		invalidate_ppgtt_mm(mm);
 	} else {
 		vfree(mm->ggtt_mm.virtual_ggtt);
-- 
2.7.4

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply	[flat|nested] 9+ messages in thread

* [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for drm/i915/gvt: more locking for ppgtt mm LRU list
  2020-02-03 15:07 ` Igor Druzhinin
  (?)
  (?)
@ 2020-02-04 18:12 ` Patchwork
  -1 siblings, 0 replies; 9+ messages in thread
From: Patchwork @ 2020-02-04 18:12 UTC (permalink / raw)
  To: Igor Druzhinin; +Cc: intel-gfx

== Series Details ==

Series: drm/i915/gvt: more locking for ppgtt mm LRU list
URL   : https://patchwork.freedesktop.org/series/72927/
State : warning

== Summary ==

$ dim checkpatch origin/drm-tip
5eeb11aab588 drm/i915/gvt: more locking for ppgtt mm LRU list
-:6: ERROR:GIT_COMMIT_ID: Please use git commit description style 'commit <12+ chars of sha1> ("<title line>")' - ie: 'commit 72aabfb862e4 ("drm/i915/gvt: Add mutual lock for ppgtt mm LRU list")'
#6: 
When the lock was introduced in 72aabfb862e40 ("drm/i915/gvt: Add mutual

total: 1 errors, 0 warnings, 0 checks, 11 lines checked

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply	[flat|nested] 9+ messages in thread

* [Intel-gfx] ✓ Fi.CI.BAT: success for drm/i915/gvt: more locking for ppgtt mm LRU list
  2020-02-03 15:07 ` Igor Druzhinin
                   ` (2 preceding siblings ...)
  (?)
@ 2020-02-04 18:41 ` Patchwork
  -1 siblings, 0 replies; 9+ messages in thread
From: Patchwork @ 2020-02-04 18:41 UTC (permalink / raw)
  To: Igor Druzhinin; +Cc: intel-gfx

== Series Details ==

Series: drm/i915/gvt: more locking for ppgtt mm LRU list
URL   : https://patchwork.freedesktop.org/series/72927/
State : success

== Summary ==

CI Bug Log - changes from CI_DRM_7864 -> Patchwork_16398
====================================================

Summary
-------

  **SUCCESS**

  No regressions found.

  External URL: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/index.html

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

  Here are the changes found in Patchwork_16398 that come from known issues:

### IGT changes ###

#### Issues hit ####

  * igt@gem_close_race@basic-threads:
    - fi-hsw-peppy:       [PASS][1] -> [TIMEOUT][2] ([fdo#112271] / [i915#1084])
   [1]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/fi-hsw-peppy/igt@gem_close_race@basic-threads.html
   [2]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/fi-hsw-peppy/igt@gem_close_race@basic-threads.html

  * igt@gem_exec_parallel@fds:
    - fi-byt-n2820:       [PASS][3] -> [FAIL][4] ([i915#694])
   [3]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/fi-byt-n2820/igt@gem_exec_parallel@fds.html
   [4]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/fi-byt-n2820/igt@gem_exec_parallel@fds.html

  * igt@gem_exec_suspend@basic-s4-devices:
    - fi-tgl-y:           [PASS][5] -> [FAIL][6] ([CI#94])
   [5]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/fi-tgl-y/igt@gem_exec_suspend@basic-s4-devices.html
   [6]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/fi-tgl-y/igt@gem_exec_suspend@basic-s4-devices.html

  * igt@i915_getparams_basic@basic-eu-total:
    - fi-tgl-y:           [PASS][7] -> [DMESG-WARN][8] ([CI#94] / [i915#402])
   [7]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/fi-tgl-y/igt@i915_getparams_basic@basic-eu-total.html
   [8]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/fi-tgl-y/igt@i915_getparams_basic@basic-eu-total.html

  * igt@i915_selftest@live_blt:
    - fi-ivb-3770:        [PASS][9] -> [DMESG-FAIL][10] ([i915#725])
   [9]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/fi-ivb-3770/igt@i915_selftest@live_blt.html
   [10]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/fi-ivb-3770/igt@i915_selftest@live_blt.html

  * igt@i915_selftest@live_gem_contexts:
    - fi-byt-n2820:       [PASS][11] -> [DMESG-FAIL][12] ([i915#1052])
   [11]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/fi-byt-n2820/igt@i915_selftest@live_gem_contexts.html
   [12]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/fi-byt-n2820/igt@i915_selftest@live_gem_contexts.html

  
#### Possible fixes ####

  * igt@gem_exec_parallel@fds:
    - fi-byt-j1900:       [FAIL][13] ([i915#694]) -> [PASS][14]
   [13]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/fi-byt-j1900/igt@gem_exec_parallel@fds.html
   [14]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/fi-byt-j1900/igt@gem_exec_parallel@fds.html

  * igt@i915_pm_rpm@module-reload:
    - fi-skl-6770hq:      [FAIL][15] ([i915#178]) -> [PASS][16]
   [15]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/fi-skl-6770hq/igt@i915_pm_rpm@module-reload.html
   [16]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/fi-skl-6770hq/igt@i915_pm_rpm@module-reload.html

  * igt@i915_selftest@live_blt:
    - fi-hsw-4770:        [DMESG-FAIL][17] ([i915#725]) -> [PASS][18]
   [17]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/fi-hsw-4770/igt@i915_selftest@live_blt.html
   [18]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/fi-hsw-4770/igt@i915_selftest@live_blt.html

  * igt@i915_selftest@live_gem_contexts:
    - fi-byt-j1900:       [DMESG-FAIL][19] ([i915#1052]) -> [PASS][20]
   [19]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/fi-byt-j1900/igt@i915_selftest@live_gem_contexts.html
   [20]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/fi-byt-j1900/igt@i915_selftest@live_gem_contexts.html

  * igt@i915_selftest@live_gtt:
    - fi-skl-6600u:       [TIMEOUT][21] ([fdo#111732] / [fdo#112271]) -> [PASS][22]
   [21]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/fi-skl-6600u/igt@i915_selftest@live_gtt.html
   [22]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/fi-skl-6600u/igt@i915_selftest@live_gtt.html

  * igt@i915_selftest@live_perf:
    - fi-apl-guc:         [INCOMPLETE][23] ([fdo#103927]) -> [PASS][24]
   [23]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/fi-apl-guc/igt@i915_selftest@live_perf.html
   [24]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/fi-apl-guc/igt@i915_selftest@live_perf.html

  * igt@kms_addfb_basic@bad-pitch-0:
    - fi-tgl-y:           [DMESG-WARN][25] ([CI#94] / [i915#402]) -> [PASS][26]
   [25]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/fi-tgl-y/igt@kms_addfb_basic@bad-pitch-0.html
   [26]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/fi-tgl-y/igt@kms_addfb_basic@bad-pitch-0.html

  
#### Warnings ####

  * igt@gem_exec_parallel@contexts:
    - fi-byt-j1900:       [TIMEOUT][27] ([fdo#112271] / [i915#1084]) -> [FAIL][28] ([i915#694])
   [27]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/fi-byt-j1900/igt@gem_exec_parallel@contexts.html
   [28]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/fi-byt-j1900/igt@gem_exec_parallel@contexts.html

  
  [CI#94]: https://gitlab.freedesktop.org/gfx-ci/i915-infra/issues/94
  [fdo#103927]: https://bugs.freedesktop.org/show_bug.cgi?id=103927
  [fdo#111732]: https://bugs.freedesktop.org/show_bug.cgi?id=111732
  [fdo#112271]: https://bugs.freedesktop.org/show_bug.cgi?id=112271
  [i915#1052]: https://gitlab.freedesktop.org/drm/intel/issues/1052
  [i915#1084]: https://gitlab.freedesktop.org/drm/intel/issues/1084
  [i915#178]: https://gitlab.freedesktop.org/drm/intel/issues/178
  [i915#402]: https://gitlab.freedesktop.org/drm/intel/issues/402
  [i915#694]: https://gitlab.freedesktop.org/drm/intel/issues/694
  [i915#725]: https://gitlab.freedesktop.org/drm/intel/issues/725


Participating hosts (50 -> 41)
------------------------------

  Additional (3): fi-skl-lmem fi-glk-dsi fi-snb-2520m 
  Missing    (12): fi-ilk-m540 fi-bdw-samus fi-bsw-n3050 fi-hsw-4200u fi-byt-squawks fi-ilk-650 fi-ctg-p8600 fi-gdg-551 fi-blb-e6850 fi-byt-clapper fi-bsw-nick fi-skl-6700k2 


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

  * CI: CI-20190529 -> None
  * Linux: CI_DRM_7864 -> Patchwork_16398

  CI-20190529: 20190529
  CI_DRM_7864: 5a140e2fc771e4c8b10d14e2db7bfb4996ee9d8a @ git://anongit.freedesktop.org/gfx-ci/linux
  IGT_5417: 33cc93c8ba5daa0b7498f297a4f626844d895d06 @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools
  Patchwork_16398: 5eeb11aab588bee0a5e0b6feed3df9986ee73a64 @ git://anongit.freedesktop.org/gfx-ci/linux


== Linux commits ==

5eeb11aab588 drm/i915/gvt: more locking for ppgtt mm LRU list

== Logs ==

For more details see: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/index.html
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply	[flat|nested] 9+ messages in thread

* [Intel-gfx] ✓ Fi.CI.IGT: success for drm/i915/gvt: more locking for ppgtt mm LRU list
  2020-02-03 15:07 ` Igor Druzhinin
                   ` (3 preceding siblings ...)
  (?)
@ 2020-02-06 18:42 ` Patchwork
  -1 siblings, 0 replies; 9+ messages in thread
From: Patchwork @ 2020-02-06 18:42 UTC (permalink / raw)
  To: Igor Druzhinin; +Cc: intel-gfx

== Series Details ==

Series: drm/i915/gvt: more locking for ppgtt mm LRU list
URL   : https://patchwork.freedesktop.org/series/72927/
State : success

== Summary ==

CI Bug Log - changes from CI_DRM_7864_full -> Patchwork_16398_full
====================================================

Summary
-------

  **WARNING**

  Minor unknown changes coming with Patchwork_16398_full need to be verified
  manually.
  
  If you think the reported changes have nothing to do with the changes
  introduced in Patchwork_16398_full, please notify your bug team to allow them
  to document this new failure mode, which will reduce false positives in CI.

  

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

  Here are the unknown changes that may have been introduced in Patchwork_16398_full:

### IGT changes ###

#### Warnings ####

  * igt@i915_pm_dc@dc6-psr:
    - shard-skl:          [FAIL][1] ([i915#454]) -> [FAIL][2]
   [1]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-skl8/igt@i915_pm_dc@dc6-psr.html
   [2]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-skl7/igt@i915_pm_dc@dc6-psr.html

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

  Here are the changes found in Patchwork_16398_full that come from known issues:

### IGT changes ###

#### Issues hit ####

  * igt@gem_busy@busy-vcs1:
    - shard-iclb:         [PASS][3] -> [SKIP][4] ([fdo#112080]) +16 similar issues
   [3]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-iclb4/igt@gem_busy@busy-vcs1.html
   [4]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-iclb3/igt@gem_busy@busy-vcs1.html

  * igt@gem_ctx_shared@exec-single-timeline-bsd:
    - shard-iclb:         [PASS][5] -> [SKIP][6] ([fdo#110841])
   [5]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-iclb8/igt@gem_ctx_shared@exec-single-timeline-bsd.html
   [6]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-iclb4/igt@gem_ctx_shared@exec-single-timeline-bsd.html

  * igt@gem_exec_schedule@in-order-bsd:
    - shard-iclb:         [PASS][7] -> [SKIP][8] ([fdo#112146]) +4 similar issues
   [7]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-iclb3/igt@gem_exec_schedule@in-order-bsd.html
   [8]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-iclb4/igt@gem_exec_schedule@in-order-bsd.html

  * igt@gem_exec_schedule@pi-userfault-bsd:
    - shard-iclb:         [PASS][9] -> [SKIP][10] ([i915#677])
   [9]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-iclb3/igt@gem_exec_schedule@pi-userfault-bsd.html
   [10]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-iclb4/igt@gem_exec_schedule@pi-userfault-bsd.html

  * igt@gem_exec_schedule@promotion-bsd1:
    - shard-iclb:         [PASS][11] -> [SKIP][12] ([fdo#109276]) +27 similar issues
   [11]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-iclb1/igt@gem_exec_schedule@promotion-bsd1.html
   [12]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-iclb7/igt@gem_exec_schedule@promotion-bsd1.html

  * igt@gem_partial_pwrite_pread@write-snoop:
    - shard-hsw:          [PASS][13] -> [FAIL][14] ([i915#694]) +1 similar issue
   [13]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-hsw2/igt@gem_partial_pwrite_pread@write-snoop.html
   [14]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-hsw5/igt@gem_partial_pwrite_pread@write-snoop.html

  * igt@gem_tiled_partial_pwrite_pread@writes-after-reads:
    - shard-hsw:          [PASS][15] -> [FAIL][16] ([i915#817])
   [15]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-hsw8/igt@gem_tiled_partial_pwrite_pread@writes-after-reads.html
   [16]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-hsw4/igt@gem_tiled_partial_pwrite_pread@writes-after-reads.html

  * igt@i915_pm_rps@reset:
    - shard-iclb:         [PASS][17] -> [FAIL][18] ([i915#413])
   [17]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-iclb8/igt@i915_pm_rps@reset.html
   [18]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-iclb8/igt@i915_pm_rps@reset.html

  * igt@kms_cursor_crc@pipe-a-cursor-suspend:
    - shard-kbl:          [PASS][19] -> [DMESG-WARN][20] ([i915#180]) +4 similar issues
   [19]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-kbl7/igt@kms_cursor_crc@pipe-a-cursor-suspend.html
   [20]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-kbl3/igt@kms_cursor_crc@pipe-a-cursor-suspend.html

  * igt@kms_flip@flip-vs-expired-vblank:
    - shard-skl:          [PASS][21] -> [FAIL][22] ([i915#79])
   [21]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-skl1/igt@kms_flip@flip-vs-expired-vblank.html
   [22]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-skl9/igt@kms_flip@flip-vs-expired-vblank.html

  * igt@kms_flip@flip-vs-suspend-interruptible:
    - shard-skl:          [PASS][23] -> [INCOMPLETE][24] ([i915#221])
   [23]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-skl8/igt@kms_flip@flip-vs-suspend-interruptible.html
   [24]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-skl2/igt@kms_flip@flip-vs-suspend-interruptible.html

  * igt@kms_frontbuffer_tracking@psr-1p-primscrn-spr-indfb-draw-mmap-gtt:
    - shard-tglb:         [PASS][25] -> [SKIP][26] ([i915#668]) +7 similar issues
   [25]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-tglb3/igt@kms_frontbuffer_tracking@psr-1p-primscrn-spr-indfb-draw-mmap-gtt.html
   [26]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-tglb3/igt@kms_frontbuffer_tracking@psr-1p-primscrn-spr-indfb-draw-mmap-gtt.html

  * igt@kms_pipe_crc_basic@nonblocking-crc-pipe-c-frame-sequence:
    - shard-skl:          [PASS][27] -> [FAIL][28] ([i915#53])
   [27]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-skl7/igt@kms_pipe_crc_basic@nonblocking-crc-pipe-c-frame-sequence.html
   [28]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-skl4/igt@kms_pipe_crc_basic@nonblocking-crc-pipe-c-frame-sequence.html

  * igt@kms_plane@plane-panning-bottom-right-suspend-pipe-a-planes:
    - shard-apl:          [PASS][29] -> [DMESG-WARN][30] ([i915#180]) +1 similar issue
   [29]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-apl3/igt@kms_plane@plane-panning-bottom-right-suspend-pipe-a-planes.html
   [30]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-apl7/igt@kms_plane@plane-panning-bottom-right-suspend-pipe-a-planes.html

  * igt@kms_plane_alpha_blend@pipe-c-coverage-7efc:
    - shard-skl:          [PASS][31] -> [FAIL][32] ([fdo#108145] / [i915#265]) +1 similar issue
   [31]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-skl4/igt@kms_plane_alpha_blend@pipe-c-coverage-7efc.html
   [32]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-skl5/igt@kms_plane_alpha_blend@pipe-c-coverage-7efc.html

  * igt@kms_psr2_su@page_flip:
    - shard-iclb:         [PASS][33] -> [SKIP][34] ([fdo#109642] / [fdo#111068])
   [33]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-iclb2/igt@kms_psr2_su@page_flip.html
   [34]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-iclb5/igt@kms_psr2_su@page_flip.html

  * igt@kms_psr@no_drrs:
    - shard-iclb:         [PASS][35] -> [FAIL][36] ([i915#173])
   [35]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-iclb6/igt@kms_psr@no_drrs.html
   [36]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-iclb1/igt@kms_psr@no_drrs.html

  * igt@kms_psr@psr2_primary_page_flip:
    - shard-iclb:         [PASS][37] -> [SKIP][38] ([fdo#109441]) +1 similar issue
   [37]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-iclb2/igt@kms_psr@psr2_primary_page_flip.html
   [38]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-iclb5/igt@kms_psr@psr2_primary_page_flip.html

  
#### Possible fixes ####

  * igt@gem_exec_schedule@pi-distinct-iova-bsd:
    - shard-iclb:         [SKIP][39] ([i915#677]) -> [PASS][40] +2 similar issues
   [39]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-iclb1/igt@gem_exec_schedule@pi-distinct-iova-bsd.html
   [40]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-iclb6/igt@gem_exec_schedule@pi-distinct-iova-bsd.html

  * igt@gem_exec_schedule@preempt-other-chain-bsd:
    - shard-iclb:         [SKIP][41] ([fdo#112146]) -> [PASS][42] +10 similar issues
   [41]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-iclb2/igt@gem_exec_schedule@preempt-other-chain-bsd.html
   [42]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-iclb8/igt@gem_exec_schedule@preempt-other-chain-bsd.html

  * igt@gem_partial_pwrite_pread@writes-after-reads-display:
    - shard-hsw:          [FAIL][43] ([i915#694]) -> [PASS][44]
   [43]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-hsw7/igt@gem_partial_pwrite_pread@writes-after-reads-display.html
   [44]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-hsw6/igt@gem_partial_pwrite_pread@writes-after-reads-display.html

  * igt@gem_softpin@noreloc-s3:
    - shard-apl:          [DMESG-WARN][45] ([i915#180]) -> [PASS][46] +1 similar issue
   [45]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-apl6/igt@gem_softpin@noreloc-s3.html
   [46]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-apl6/igt@gem_softpin@noreloc-s3.html

  * igt@gem_tiled_blits@normal:
    - shard-hsw:          [FAIL][47] ([i915#818]) -> [PASS][48]
   [47]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-hsw7/igt@gem_tiled_blits@normal.html
   [48]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-hsw6/igt@gem_tiled_blits@normal.html

  * igt@i915_pm_rps@waitboost:
    - shard-tglb:         [FAIL][49] ([i915#413]) -> [PASS][50] +1 similar issue
   [49]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-tglb7/igt@i915_pm_rps@waitboost.html
   [50]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-tglb6/igt@i915_pm_rps@waitboost.html

  * igt@i915_selftest@live_blt:
    - shard-hsw:          [DMESG-FAIL][51] ([i915#725]) -> [PASS][52]
   [51]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-hsw7/igt@i915_selftest@live_blt.html
   [52]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-hsw4/igt@i915_selftest@live_blt.html

  * igt@kms_cursor_crc@pipe-c-cursor-suspend:
    - shard-kbl:          [DMESG-WARN][53] ([i915#180]) -> [PASS][54] +3 similar issues
   [53]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-kbl3/igt@kms_cursor_crc@pipe-c-cursor-suspend.html
   [54]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-kbl4/igt@kms_cursor_crc@pipe-c-cursor-suspend.html

  * igt@kms_flip@2x-flip-vs-expired-vblank:
    - shard-glk:          [FAIL][55] ([i915#79]) -> [PASS][56]
   [55]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-glk1/igt@kms_flip@2x-flip-vs-expired-vblank.html
   [56]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-glk8/igt@kms_flip@2x-flip-vs-expired-vblank.html

  * igt@kms_plane_lowres@pipe-a-tiling-x:
    - shard-glk:          [FAIL][57] ([i915#899]) -> [PASS][58] +1 similar issue
   [57]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-glk9/igt@kms_plane_lowres@pipe-a-tiling-x.html
   [58]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-glk4/igt@kms_plane_lowres@pipe-a-tiling-x.html

  * igt@kms_psr@psr2_primary_mmap_gtt:
    - shard-iclb:         [SKIP][59] ([fdo#109441]) -> [PASS][60]
   [59]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-iclb6/igt@kms_psr@psr2_primary_mmap_gtt.html
   [60]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-iclb2/igt@kms_psr@psr2_primary_mmap_gtt.html

  * igt@perf_pmu@busy-no-semaphores-vcs1:
    - shard-iclb:         [SKIP][61] ([fdo#112080]) -> [PASS][62] +14 similar issues
   [61]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-iclb7/igt@perf_pmu@busy-no-semaphores-vcs1.html
   [62]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-iclb4/igt@perf_pmu@busy-no-semaphores-vcs1.html

  * igt@prime_busy@hang-bsd2:
    - shard-iclb:         [SKIP][63] ([fdo#109276]) -> [PASS][64] +25 similar issues
   [63]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-iclb7/igt@prime_busy@hang-bsd2.html
   [64]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-iclb4/igt@prime_busy@hang-bsd2.html

  * igt@prime_mmap_coherency@ioctl-errors:
    - shard-hsw:          [FAIL][65] ([i915#831]) -> [PASS][66]
   [65]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-hsw5/igt@prime_mmap_coherency@ioctl-errors.html
   [66]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-hsw7/igt@prime_mmap_coherency@ioctl-errors.html

  
#### Warnings ####

  * igt@gem_ctx_isolation@vcs1-nonpriv:
    - shard-iclb:         [SKIP][67] ([fdo#112080]) -> [FAIL][68] ([IGT#28]) +1 similar issue
   [67]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-iclb6/igt@gem_ctx_isolation@vcs1-nonpriv.html
   [68]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-iclb1/igt@gem_ctx_isolation@vcs1-nonpriv.html

  * igt@kms_dp_dsc@basic-dsc-enable-edp:
    - shard-iclb:         [SKIP][69] ([fdo#109349]) -> [DMESG-WARN][70] ([fdo#107724])
   [69]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_7864/shard-iclb6/igt@kms_dp_dsc@basic-dsc-enable-edp.html
   [70]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_16398/shard-iclb2/igt@kms_dp_dsc@basic-dsc-enable-edp.html

  
  [IGT#28]: https://gitlab.freedesktop.org/drm/igt-gpu-tools/issues/28
  [fdo#107724]: https://bugs.freedesktop.org/show_bug.cgi?id=107724
  [fdo#108145]: https://bugs.freedesktop.org/show_bug.cgi?id=108145
  [fdo#109276]: https://bugs.freedesktop.org/show_bug.cgi?id=109276
  [fdo#109349]: https://bugs.freedesktop.org/show_bug.cgi?id=109349
  [fdo#109441]: https://bugs.freedesktop.org/show_bug.cgi?id=109441
  [fdo#109642]: https://bugs.freedesktop.org/show_bug.cgi?id=109642
  [fdo#110841]: https://bugs.freedesktop.org/show_bug.cgi?id=110841
  [fdo#111068]: https://bugs.freedesktop.org/show_bug.cgi?id=111068
  [fdo#112080]: https://bugs.freedesktop.org/show_bug.cgi?id=112080
  [fdo#112146]: https://bugs.freedesktop.org/show_bug.cgi?id=112146
  [i915#173]: https://gitlab.freedesktop.org/drm/intel/issues/173
  [i915#180]: https://gitlab.freedesktop.org/drm/intel/issues/180
  [i915#221]: https://gitlab.freedesktop.org/drm/intel/issues/221
  [i915#265]: https://gitlab.freedesktop.org/drm/intel/issues/265
  [i915#413]: https://gitlab.freedesktop.org/drm/intel/issues/413
  [i915#454]: https://gitlab.freedesktop.org/drm/intel/issues/454
  [i915#53]: https://gitlab.freedesktop.org/drm/intel/issues/53
  [i915#668]: https://gitlab.freedesktop.org/drm/intel/issues/668
  [i915#677]: https://gitlab.freedesktop.org/drm/intel/issues/677
  [i915#694]: https://gitlab.freedesktop.org/drm/intel/issues/694
  [i915#725]: https://gitlab.freedesktop.org/drm/intel/issues/725
  [i915#79]: https://gitlab.freedesktop.org/drm/intel/issues/79
  [i915#817]: https://gitlab.freedesktop.org/drm/intel/issues/817
  [i915#818]: https://gitlab.freedesktop.org/drm/intel/issues/818
  [i915#831]: https://gitlab.freedesktop.org/drm/intel/issues/831
  [i915#899]: https://gitlab.freedesktop.org/drm/intel/issues/899


Participating hosts (10 -> 10)
------------------------------

  No changes in participating hosts


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

  * CI: CI-20190529 -> None
  * Linux: CI_DRM_7864 -> Patchwork_16398

  CI-20190529: 20190529
  CI_DRM_7864: 5a140e2fc771e4c8b10d14e2db7bfb4996ee9d8a @ git://anongit.freedesktop.org/gfx-ci/linux
  IGT_5417: 33cc93c8ba5daa0b7498f297a4f626844d895d06 @ git://anongit.freedesktop.org/xorg/app/intel-gpu-tools
  Patchwork_16398: 5eeb11aab588bee0a5e0b6feed3df9986ee73a64 @ 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_16398/index.html
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: [PATCH] drm/i915/gvt: more locking for ppgtt mm LRU list
  2020-02-03 15:07 ` Igor Druzhinin
  (?)
@ 2020-02-10  1:43   ` Zhenyu Wang
  -1 siblings, 0 replies; 9+ messages in thread
From: Zhenyu Wang @ 2020-02-10  1:43 UTC (permalink / raw)
  To: Igor Druzhinin
  Cc: linux-kernel, dri-devel, intel-gfx, intel-gvt-dev, airlied,
	joonas.lahtinen, jani.nikula, zhenyuw, daniel, rodrigo.vivi,
	zhi.a.wang

[-- Attachment #1: Type: text/plain, Size: 1122 bytes --]

On 2020.02.03 15:07:01 +0000, Igor Druzhinin wrote:
> When the lock was introduced in 72aabfb862e40 ("drm/i915/gvt: Add mutual
> lock for ppgtt mm LRU list") one place got lost.
> 
> Signed-off-by: Igor Druzhinin <igor.druzhinin@citrix.com>
> ---
>  drivers/gpu/drm/i915/gvt/gtt.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c
> index 34cb404..4a48280 100644
> --- a/drivers/gpu/drm/i915/gvt/gtt.c
> +++ b/drivers/gpu/drm/i915/gvt/gtt.c
> @@ -1956,7 +1956,11 @@ void _intel_vgpu_mm_release(struct kref *mm_ref)
>  
>  	if (mm->type == INTEL_GVT_MM_PPGTT) {
>  		list_del(&mm->ppgtt_mm.list);
> +
> +		mutex_lock(&mm->vgpu->gvt->gtt.ppgtt_mm_lock);
>  		list_del(&mm->ppgtt_mm.lru_list);
> +		mutex_unlock(&mm->vgpu->gvt->gtt.ppgtt_mm_lock);
> +
>  		invalidate_ppgtt_mm(mm);
>  	} else {
>  		vfree(mm->ggtt_mm.virtual_ggtt);
> -- 

Thanks for the fix!

Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>

-- 
Open Source Technology Center, Intel ltd.

$gpg --keyserver wwwkeys.pgp.net --recv-keys 4D781827

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^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: [PATCH] drm/i915/gvt: more locking for ppgtt mm LRU list
@ 2020-02-10  1:43   ` Zhenyu Wang
  0 siblings, 0 replies; 9+ messages in thread
From: Zhenyu Wang @ 2020-02-10  1:43 UTC (permalink / raw)
  To: Igor Druzhinin
  Cc: airlied, intel-gfx, linux-kernel, dri-devel, rodrigo.vivi,
	intel-gvt-dev, zhi.a.wang


[-- Attachment #1.1: Type: text/plain, Size: 1122 bytes --]

On 2020.02.03 15:07:01 +0000, Igor Druzhinin wrote:
> When the lock was introduced in 72aabfb862e40 ("drm/i915/gvt: Add mutual
> lock for ppgtt mm LRU list") one place got lost.
> 
> Signed-off-by: Igor Druzhinin <igor.druzhinin@citrix.com>
> ---
>  drivers/gpu/drm/i915/gvt/gtt.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c
> index 34cb404..4a48280 100644
> --- a/drivers/gpu/drm/i915/gvt/gtt.c
> +++ b/drivers/gpu/drm/i915/gvt/gtt.c
> @@ -1956,7 +1956,11 @@ void _intel_vgpu_mm_release(struct kref *mm_ref)
>  
>  	if (mm->type == INTEL_GVT_MM_PPGTT) {
>  		list_del(&mm->ppgtt_mm.list);
> +
> +		mutex_lock(&mm->vgpu->gvt->gtt.ppgtt_mm_lock);
>  		list_del(&mm->ppgtt_mm.lru_list);
> +		mutex_unlock(&mm->vgpu->gvt->gtt.ppgtt_mm_lock);
> +
>  		invalidate_ppgtt_mm(mm);
>  	} else {
>  		vfree(mm->ggtt_mm.virtual_ggtt);
> -- 

Thanks for the fix!

Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>

-- 
Open Source Technology Center, Intel ltd.

$gpg --keyserver wwwkeys.pgp.net --recv-keys 4D781827

[-- Attachment #1.2: signature.asc --]
[-- Type: application/pgp-signature, Size: 195 bytes --]

[-- Attachment #2: Type: text/plain, Size: 160 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

^ permalink raw reply	[flat|nested] 9+ messages in thread

* Re: [Intel-gfx] [PATCH] drm/i915/gvt: more locking for ppgtt mm LRU list
@ 2020-02-10  1:43   ` Zhenyu Wang
  0 siblings, 0 replies; 9+ messages in thread
From: Zhenyu Wang @ 2020-02-10  1:43 UTC (permalink / raw)
  To: Igor Druzhinin; +Cc: airlied, intel-gfx, linux-kernel, dri-devel, intel-gvt-dev


[-- Attachment #1.1: Type: text/plain, Size: 1122 bytes --]

On 2020.02.03 15:07:01 +0000, Igor Druzhinin wrote:
> When the lock was introduced in 72aabfb862e40 ("drm/i915/gvt: Add mutual
> lock for ppgtt mm LRU list") one place got lost.
> 
> Signed-off-by: Igor Druzhinin <igor.druzhinin@citrix.com>
> ---
>  drivers/gpu/drm/i915/gvt/gtt.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c
> index 34cb404..4a48280 100644
> --- a/drivers/gpu/drm/i915/gvt/gtt.c
> +++ b/drivers/gpu/drm/i915/gvt/gtt.c
> @@ -1956,7 +1956,11 @@ void _intel_vgpu_mm_release(struct kref *mm_ref)
>  
>  	if (mm->type == INTEL_GVT_MM_PPGTT) {
>  		list_del(&mm->ppgtt_mm.list);
> +
> +		mutex_lock(&mm->vgpu->gvt->gtt.ppgtt_mm_lock);
>  		list_del(&mm->ppgtt_mm.lru_list);
> +		mutex_unlock(&mm->vgpu->gvt->gtt.ppgtt_mm_lock);
> +
>  		invalidate_ppgtt_mm(mm);
>  	} else {
>  		vfree(mm->ggtt_mm.virtual_ggtt);
> -- 

Thanks for the fix!

Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>

-- 
Open Source Technology Center, Intel ltd.

$gpg --keyserver wwwkeys.pgp.net --recv-keys 4D781827

[-- Attachment #1.2: signature.asc --]
[-- Type: application/pgp-signature, Size: 195 bytes --]

[-- Attachment #2: Type: text/plain, Size: 160 bytes --]

_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

^ permalink raw reply	[flat|nested] 9+ messages in thread

end of thread, other threads:[~2020-02-10  1:55 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-02-03 15:07 [PATCH] drm/i915/gvt: more locking for ppgtt mm LRU list Igor Druzhinin
2020-02-03 15:07 ` [Intel-gfx] " Igor Druzhinin
2020-02-03 15:07 ` Igor Druzhinin
2020-02-04 18:12 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for " Patchwork
2020-02-04 18:41 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2020-02-06 18:42 ` [Intel-gfx] ✓ Fi.CI.IGT: " Patchwork
2020-02-10  1:43 ` [PATCH] " Zhenyu Wang
2020-02-10  1:43   ` [Intel-gfx] " Zhenyu Wang
2020-02-10  1:43   ` Zhenyu Wang

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