From: Dave Gordon <david.s.gordon@xxxxxxxxx> 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.gordon@xxxxxxxxx> --- 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@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
