[igt-dev] [RFC v1] Data Port Coherency tests.

Chris Wilson chris at chris-wilson.co.uk
Tue Mar 20 15:36:12 UTC 2018


Quoting Chris Wilson (2018-03-20 15:30:59)
> Quoting Tomasz Lis (2018-03-20 15:12:32)
> > From: "Lis, Tomasz" <tomasz.lis at intel.com>
> > 
> > This adds a new test binary, containing tests for the Data Port Coherency
> > option. The tests check whether the option is correctly set to proper GPU
> > register.
> 
> But where's the test that it *does* anything? I.e. what's the expected
> change in user visible behaviour? (What does the flag really mean, now
> and for years to come?)

To be clear; this test illustrates that it is a context register being
tweaked and not an execbuf property.
-Chris


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