This is a note to let you know that I've just added the patch titled
Revert "drm/i915/gt: Propagate change in error status to children on unhold"
to the 5.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
revert-drm-i915-gt-propagate-change-in-error-status-to-children-on-unhold.patch
and it can be found in the queue-5.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From ac653dd7996edf1770959e11a078312928bd7315 Mon Sep 17 00:00:00 2001
From: Matthew Brost <matthew.brost@xxxxxxxxx>
Date: Thu, 9 Sep 2021 09:47:28 -0700
Subject: Revert "drm/i915/gt: Propagate change in error status to children on unhold"
From: Matthew Brost <matthew.brost@xxxxxxxxx>
commit ac653dd7996edf1770959e11a078312928bd7315 upstream.
Propagating errors to dependent fences is broken and can lead to errors
from one client ending up in another. In commit 3761baae908a ("Revert
"drm/i915: Propagate errors on awaiting already signaled fences""), we
attempted to get rid of fence error propagation but missed the case
added in commit 8e9f84cf5cac ("drm/i915/gt: Propagate change in error
status to children on unhold"). Revert that one too. This error was
found by an up-and-coming selftest which triggers a reset during
request cancellation and verifies that subsequent requests complete
successfully.
v2:
(Daniel Vetter)
- Use revert
v3:
(Jason)
- Update commit message
v4 (Daniele):
- fix checkpatch error in commit message.
References: '3761baae908a ("Revert "drm/i915: Propagate errors on awaiting already signaled fences"")'
Signed-off-by: Matthew Brost <matthew.brost@xxxxxxxxx>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
Signed-off-by: John Harrison <John.C.Harrison@xxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20210909164744.31249-8-matthew.brost@xxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/gt/intel_execlists_submission.c | 4 ----
1 file changed, 4 deletions(-)
--- a/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
+++ b/drivers/gpu/drm/i915/gt/intel_execlists_submission.c
@@ -2091,10 +2091,6 @@ static void __execlists_unhold(struct i9
if (p->flags & I915_DEPENDENCY_WEAK)
continue;
- /* Propagate any change in error status */
- if (rq->fence.error)
- i915_request_set_error_once(w, rq->fence.error);
-
if (w->engine != rq->engine)
continue;
Patches currently in stable-queue which might be from matthew.brost@xxxxxxxxx are
queue-5.14/revert-drm-i915-gt-propagate-change-in-error-status-to-children-on-unhold.patch
