From: Dave Gordon <david.s.gor...@intel.com>
To reinitialise a ringbuffer after a hang (or preemption), we need to not
only to not only set both h/w and s/w HEAD and TAIL to 0, but also clear
last_retired_head and recalculate the available space.
For: VIZ-2021
Signed-off-by: Dave Gordon <david.s.gor...@intel.com>
---
drivers/gpu/drm/i915/intel_lrc.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c
index f64283f..296d900 100644
--- a/drivers/gpu/drm/i915/intel_lrc.c
+++ b/drivers/gpu/drm/i915/intel_lrc.c
@@ -2675,5 +2675,7 @@ void intel_lr_context_reset(struct drm_device *dev,
ringbuf->head = 0;
ringbuf->tail = 0;
+ ringbuf->last_retired_head = -1;
+ intel_ring_update_space(ringbuf);
}
}
--
1.9.1
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/intel-gfx
