[vbox-dev] Have any non-Linux developers looked at the vboxvideo drm/kms driver?

[Michael Thayer]

Hello Jan,

I'm afraid I will have to ask for a bit of clarification there.  My 
understanding of a frame buffer is an area of (usually video) memory 
representing the image shown on a screen.  You can have more or less as 
many of those as will fit into video memory and flip between them.  You 
can also have up to 32 virtual screens (the hardware supports 64).

Regards
Michael

08.02.2017 13:00, Jan Petrouš wrote:
> Hi Michael,
>
> sorry for hijacking the thread, but can I ask if there will be (or even
> better - is already)
> support for MORE framebuffers?
> I still see it as nice feature for more broader audience then me only :)
>
> For example as tooling solution for development multihead devices.
>
> BR.
> /Jan
>
>
> On 8 February 2017 at 12:00, Michael Thayer <michael.thayer at oracle.com
> <mailto:michael.thayer at oracle.com>> wrote:
>
>     Hello All,
>
>     I am mainly asking this out of curiosity and interest.  On Linux as
>     of X.Org 1.19 we no longer maintain the user-space vboxvideo driver
>     (it does not play well with non-root X.Org or with Wayland) and
>     instead wrote a drm/kms driver which works with the X.Org
>     modesetting driver and GNOME Shell.  I was wondering whether any
>     non-Linux developers have had a look at the source yet, since I know
>     that a number of other systems have ported drm drivers from Linux.
>     The source code in our tree for the Linux drm/kms driver for
>     vboxvideo is located at
>
>     src/VBox/Additions/linux/drm/
>
>     See the make files and the file files_vboxvideo_drv for details of
>     all the files involved (I am still trying to simplify it).  It
>     builds unchanged against Linux 3.11 to Linux 4.10 inclusive, which I
>     hope would simplify porting, and I would be happy to make any
>     changes to our in-tree sources which are not problematic for Linux
>     and are helpful for other systems (even if you carry your own
>     sources it would probably be helpful if what we provide is as close
>     to yours as possible).
>
>     Regards
>     Michael
>     --
>     Michael Thayer | VirtualBox engineer
>     ORACLE Deutschland B.V. & Co. KG | Werkstr. 24 | D-71384 Weinstadt
>
>     ORACLE Deutschland B.V. & Co. KG
>     Hauptverwaltung: Riesstraße 25, D-80992 München
>     Registergericht: Amtsgericht München, HRA 95603
>
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>

-- 
Michael Thayer | VirtualBox engineer
ORACLE Deutschland B.V. & Co. KG | Werkstr. 24 | D-71384 Weinstadt

ORACLE Deutschland B.V. & Co. KG
Hauptverwaltung: Riesstraße 25, D-80992 München
Registergericht: Amtsgericht München, HRA 95603

Komplementärin: ORACLE Deutschland Verwaltung B.V.
Hertogswetering 163/167, 3543 AS Utrecht, Niederlande Handelsregister 
der Handelskammer Midden-Nederland, Nr. 30143697
Geschäftsführer: Alexander van der Ven, Jan Schultheiss, Val Maher