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* [PATCH RESEND] drm/i915: Mark GPU wedging on driver unregister unrecoverable
@ 2021-09-03 14:28 ` Janusz Krzysztofik
  0 siblings, 0 replies; 9+ messages in thread
From: Janusz Krzysztofik @ 2021-09-03 14:28 UTC (permalink / raw)
  To: intel-gfx; +Cc: dri-devel, Michał Winiarski, Janusz Krzysztofik

GPU wedged flag now set on driver unregister to prevent from further
using the GPU can be then cleared unintentionally when calling
__intel_gt_unset_wedged() still before the flag is finally marked
unrecoverable.  We need to have it marked unrecoverable earlier.
Implement that by replacing a call to intel_gt_set_wedged() in
intel_gt_driver_unregister() with intel_gt_set_wedged_on_fini().

With the above in place, intel_gt_set_wedged_on_fini() is now called
twice on driver remove, second time from __intel_gt_disable().  This
seems harmless, while dropping intel_gt_set_wedged_on_fini() from
__intel_gt_disable() proved to break some driver probe error unwind
paths as well as mock selftest exit path.

Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Cc: Michał Winiarski <michal.winiarski@intel.com>
---
Resending with Cc: dri-devel@lists.freedesktop.org as requested.

Thanks,
Janusz

 drivers/gpu/drm/i915/gt/intel_gt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c
index 62d40c986642..173b53cb2b47 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt.c
@@ -750,7 +750,7 @@ void intel_gt_driver_unregister(struct intel_gt *gt)
 	 * all in-flight requests so that we can quickly unbind the active
 	 * resources.
 	 */
-	intel_gt_set_wedged(gt);
+	intel_gt_set_wedged_on_fini(gt);
 
 	/* Scrub all HW state upon release */
 	with_intel_runtime_pm(gt->uncore->rpm, wakeref)
-- 
2.25.1


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

end of thread, other threads:[~2021-09-15 15:03 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-09-03 14:28 [PATCH RESEND] drm/i915: Mark GPU wedging on driver unregister unrecoverable Janusz Krzysztofik
2021-09-03 14:28 ` [Intel-gfx] " Janusz Krzysztofik
2021-09-03 16:54 ` [Intel-gfx] ✓ Fi.CI.BAT: success for drm/i915: Mark GPU wedging on driver unregister unrecoverable (rev2) Patchwork
2021-09-03 19:07 ` [Intel-gfx] ✗ Fi.CI.IGT: failure " Patchwork
2021-09-06  7:11   ` Janusz Krzysztofik
2021-09-06  8:34 ` [Intel-gfx] ✓ Fi.CI.IGT: success " Patchwork
2021-09-15 15:03   ` Matt Roper
2021-09-10 11:31 ` [PATCH RESEND] drm/i915: Mark GPU wedging on driver unregister unrecoverable Michał Winiarski
2021-09-10 11:31   ` [Intel-gfx] " Michał Winiarski

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