[igt-dev] [PATCH i-g-t] lib: Use unsigned gen for forward compatible tests

[Chris Wilson]

Quoting Petri Latvala (2020-08-10 09:22:42)
> On Mon, Aug 10, 2020 at 10:09:46AM +0200, Zbigniew Kempczyński wrote:
> > On Thu, Aug 06, 2020 at 03:45:29PM +0100, Chris Wilson wrote:
> > > Unknown, so future, gen are marked as -1 which we want to treat as -1u
> > > so that always pass >= gen checks.
> > 
> > Do we really want to enable the tests when platform is not fully
> > enabled in IGT?
> 
> What does "fully enabled" mean?
> 
> If the test is checking for just "gen > x", the test should work
> already. If the test is also checking for "gen < y" then we get a
> spurious failure, but either way CI is going to tell you that
> something is not passing. Without this it will be a skip, along with
> skipping in the case that should just work already without actual test
> changes.

And for a very large fraction of tests, the behaviour of next gen
follows current gen. Those that do not are very interesting, and will be
a much smaller number than the volume of skips we have to process.
-Chris