Quoting Mika Kuoppala (2018-08-13 11:42:42) > If engine reports that it is not ready for reset, we > give up. Evidence shows that forcing a per engine reset > on an engine which is not reporting to be ready for reset, > can bring it back into a working order. There is risk that > we corrupt the context image currently executing on that > engine. But that is a risk worth taking as if we unblock > the engine, we prevent a whole device wedging in a case > of full gpu reset. > > Reset individual engine even if it reports that it is not > prepared for reset, but only if we aim for full gpu reset > and not on first reset attempt. > > v2: force reset only on later attempts, readability (Chris) > v3: simplify with adequate caffeine levels (Chris) > > Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> > Signed-off-by: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx> Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> One last thing, you said you recalled one of the reasons for its existence was to prevent machine lockups on kbl. Is the recollection true? Do we want to leave a comment in case of fire? -Chris _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
