vboxvideo module does not load

[Konstantin Belousov]

On Fri, Jul 17, 2020 at 11:35:31AM +0200, Emmanuel Vadot wrote:
> On Fri, 17 Jul 2020 11:12:20 +0200
> Emmanuel Vadot <manu at bidouilliste.com> wrote:
> 
> > On Fri, 17 Jul 2020 11:05:57 +0200 (CEST)
> > Ronald Klop <ronald-lists at klop.ws> wrote:
> > 
> > > Thanks for the quick answer.
> > > 
> > > A recompile and kldload gave:
> > > 
> > > Jul 17 11:01:18 sjakie pkg-static[7338]: drm-devel-kmod-5.3.g20200710 deinstalled
> > > Jul 17 11:01:19 sjakie pkg-static[7522]: drm-devel-kmod-5.3.g20200710 installed
> > > Jul 17 11:02:07 sjakie kernel: link_elf_obj: symbol ttm_bo_dma_acc_size undefined
> > > Jul 17 11:02:08 sjakie kernel: linker_load_file: /boot/modules/drm.ko - unsupported file type
> > > Jul 17 11:02:08 sjakie kernel: KLD vboxvideo.ko: depends on drmn - not available or version mismatch
> > > Jul 17 11:02:08 sjakie kernel: linker_load_file: /boot/modules/vboxvideo.ko - unsupported file type
> > > 
> > > Regards,
> > > Ronald.
> > 
> >  Yeah I figured that there was other stuff needed, I'll have a look
> > this weekend and let you know.
> >  Thanks for the report.
> 
>  Can you try by kldload ttm before ? vboxvideo now depends on it but
> the dependancy wasn't added.

This is not how modules work.  You need to explicitly list the module as
a dependency for its symbol to participate in resolution.