[Intel-gfx] [PATCH] drm/i915/execlists: Skip lite restore on the currently executing request

[Chris Wilson]

Quoting Chris Wilson (2018-04-25 12:23:30)
> Quoting Mika Kuoppala (2018-04-25 12:19:08)
> > Did you try with WA_TAIL_DWORDS 16?
> 
> Sure can try, but the error state doesn't indicate TAIL==HEAD as would
> be the issue with WaIdleLiteRestore (restoring to an idle ring wouldn't
> generate the arbitration event, so no more context switches).

Watch https://patchwork.freedesktop.org/series/42284/

Actually surviving on my bdw
-Chris