Re: [Linux-fbdev-users] virtual frame buffer

[Yan S. <ya...@se...>]

>Vfb behaves like a real frame buffer device, except that you cannot mmap() it
>to userspace (resulting behavior is undefined). But that should be fixable by
>letting vfb provide its own fb_mmap() routine, if anyone cares to implement.
>
>Gr{oetje,eeting}s,
>
>						Geert
>  
>
Well, that explains why vncserver won't work right.  It gives me hope 
that everything else I've done works.

OK, I've had a look at the various kernel source xxfb_mmap functions...  
If I were to try and write one for the vfb, where do I find some docs or 
info on where to start?

And/or what's the closest one I can copy from driver/video?  Is there 
one that is simple and well documented which explains what xxfb_mmap is 
supposed to do and how?

--Yan