[2/2] drm/i915/execlists: Ensure the context is reloaded after a GPU reset
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Message ID 20190912070925.11526-2-chris@chris-wilson.co.uk
State New
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Series
  • [1/2] drm/i915/execlists: Add a paranoid flush of the CSB pointers upon reset
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Commit Message

Chris Wilson Sept. 12, 2019, 7:09 a.m. UTC
After we manipulate the context to allow replay after a GPU reset, force
that context to be reloaded. This should be a layer of paranoia, for if
the GPU was reset, the context will no longer be resident!

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
---
 drivers/gpu/drm/i915/gt/intel_lrc.c | 1 +
 1 file changed, 1 insertion(+)

Patch
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diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c
index 61a38a4ccbca..40b479d0ca5d 100644
--- a/drivers/gpu/drm/i915/gt/intel_lrc.c
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
@@ -2921,6 +2921,7 @@  static void __execlists_reset(struct intel_engine_cs *engine, bool stalled)
 	intel_ring_update_space(ce->ring);
 	__execlists_reset_reg_state(ce, engine);
 	__execlists_update_reg_state(ce, engine);
+	ce->lrc_desc |= CTX_DESC_FORCE_RESTORE; /* paranoid: GPU was reset! */
 	__context_pin_release(ce);
 
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