[igt-dev] Must-Pass Test Suite for KMS drivers

[Maxime Ripard]

On Mon, Oct 24, 2022 at 06:58:09PM +0300, Ville Syrjälä wrote:
> On Mon, Oct 24, 2022 at 08:48:15AM -0700, Rob Clark wrote:
> > On Mon, Oct 24, 2022 at 5:43 AM <maxime at cerno.tech> wrote:
> > >
> > > Hi,
> > >
> > > I've discussing the idea for the past year to add an IGT test suite that
> > > all well-behaved KMS drivers must pass.
> > >
> > > The main idea behind it comes from v4l2-compliance and cec-compliance,
> > > that are being used to validate that the drivers are sane.
> > >
> > > We should probably start building up the test list, and eventually
> > > mandate that all tests pass for all the new KMS drivers we would merge
> > > in the kernel, and be run by KCi or similar.
> > 
> > Let's get https://patchwork.freedesktop.org/patch/502641/ merged
> > first, that already gives us a mechanism similar to what we use in
> > mesa to track pass/fail/flake
> > 
> > Beyond that, I think some of the igt tests need to get more stable
> > before we could consider a "mustpass" list.  The kms_lease tests seem
> > to fail on msm due to bad assumptions in the test about which CRTCs
> > primary planes can attach to.  The legacy-cursor crc tests seem a bit
> > racy (there was a patch posted for that, not sure if it landed yet),
> > etc.
> 
> I think the safest set to start with would be pure uapi validation
> stuff. Anything that interactics with real world hardware is a much
> tougher cookie.

So I guess we would remove kms_cursor_legacy, kms_lease and
kms_tv_load_detect. Anything else?

Thanks!
Maxime
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