Re: [PATCH 10/19] Move CONTEXT_VALID_BIT check

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On Mon, Aug 30, 2021 at 02:09:57PM +0200, Maarten Lankhorst wrote:
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/gt/intel_engine_pm.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_engine_pm.c b/drivers/gpu/drm/i915/gt/intel_engine_pm.c
index 1f07ac4e0672..df81a0dc481e 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_pm.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_pm.c
@@ -52,8 +52,6 @@ static int __engine_unpark(struct intel_wakeref *wf)
	/* Discard stale context state from across idling */
	ce = engine->kernel_context;
	if (ce) {
-		GEM_BUG_ON(test_bit(CONTEXT_VALID_BIT, &ce->flags));
-
		/* Flush all pending HW writes before we touch the context */
		while (unlikely(intel_context_inflight(ce)))
			intel_engine_flush_submission(engine);
@@ -68,6 +66,9 @@ static int __engine_unpark(struct intel_wakeref *wf)
			 ce->timeline->seqno,
			 READ_ONCE(*ce->timeline->hwsp_seqno),
			 ce->ring->emit);
+
+		GEM_BUG_ON(test_bit(CONTEXT_VALID_BIT, &ce->flags));
+

Looks good to me.
Reviewed-by: Niranjana Vishwanathapura <niranjana.vishwanathapura@xxxxxxxxx>

		GEM_BUG_ON(ce->timeline->seqno !=
			   READ_ONCE(*ce->timeline->hwsp_seqno));
	}
--
2.32.0




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