Re: priority of paths to kernel modules?

On Fri, Aug 24, 2018 at 4:20 PM Niclas Zeising <zeising_at_freebsd.org> wrote:

> On 08/24/18 17:20, Warner Losh wrote:
> >  This would allow the graphics port to have a rc script that sets
> > this up so when X11 goes to automatically load the module, the right one
> > gets loaded.
> >
>
> I just want to point out that X11 doesn't load the graphics kernel
> driver by default when using the drm-*-kmod ports, and I'm not sure the
> hack to have the intel ddx (xf86-video-intel) load the drm2 driver is
> still around.
>
> It doesn't really matter though, since upstream is moving away from
> having X load the driver, and I'd like us to follow suit by using
> devmatch (this is one of the reasons we wanted to get rid of the base
> drivers, as I've stated before).  X can't always know which driver to
> load (when using modesetting for instance), and in my opinion, it should
> be the kernel/loader that decides which drivers to load.


Excellent. That reduces the compatibility matrix I need to consider. I have
some ideas, and will hack on them to see if a clever bit of slide of hand
will solve the main problem of loading the wrong driver in a dependency
chain.

Warner