[RFC PATCH] drm/aperture: Add param to disable conflicting framebuffers removal

[Neal Gompa]

On Sun, Oct 24, 2021 at 4:40 PM Javier Martinez Canillas
<javierm at redhat.com> wrote:
>
> Hello Thomas,
>
> Thanks a lot for your feedback.
>
> On 10/22/21 21:05, Thomas Zimmermann wrote:
>
> > There's still the question of the semantics of this parameter. It's a
> > bit fuzzy.
> >
> > If you use 'disable_handover' (as you mentioned in another mail), it
> > would mean that only the handover itself is disabled. So if simpledrm is
> > not bound to the device, then a native driver should load. That would be
> > hard to implement with the current code base, where we have to take old
> > fbdev drivers into account.
> >
> > (And to be pedantic, we don't really do a handover of the device. We
> > hot-unplug the generic platform device, so that the driver for the
> > native device can operate the HW without interference.)
> >
> > Simpledrm only acquires an aperture, but never removes a driver. If
> > there is a driver already, simpledrm would fail. Only native drivers try > to remove drivers and would trigger the test. So your patch is more
> > something like 'disable_native_drivers'.
> >
> > I'd go with 'disable_native_drivers', or maybe 'disable_device_handover'
>
> That works for me and "drm.disable_native_drivers" is also what Neal meant
> with his "drm.noplatformdrv", but yours is much easier to remember / type.
>

I'm good with that too. :)

-- 
真実はいつも一つ！/ Always, there's only one truth!