Chris Wilson 22e6157d38 igt/gem_exec_flush: Immediately repeat the same cacheline
When looking at a pair of GPU writes, where we want to make sure that
the clean cacheline is invalidated automatically, we want to reuse that
cacheline whilst we know it remains valid (i.e. repeat the test using a
new value to the same location).

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2016-05-02 16:10:18 +01:00
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