[Intel-gfx] [PATCH] drm/i915/perf: Invalidate OA TLB on when closing perf stream

[Chris Wilson]

Quoting Umesh Nerlige Ramappa (2020-03-09 21:10:57)
> On running several back to back perf capture sessions involving closing
> and opening the perf stream, invalid OA reports are seen in the
> beginning of the OA buffer in some sessions. Fix this by invalidating OA
> TLB when the perf stream is closed or disabled on gen12.
> 
> Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa at intel.com>

Testcase?
-Chris