>> Should be trivially fixable with some Kconfig tweaks, I'll have a look.
> 
> Here we go, this patch disables vga console and the mouse/kbd hardware 
> drivers on UML.  Running a "allmodconfig" testbuild right now, but I 
> hope that everything else is catched by PCI + ISA dependencies ...

Unfortunaly not, there are a few more places which need fixing, updated 
patch attached, with that one applied on top of the uml framebuffer 
patch "ARCH=um allmodconfig" works again ...

cheers,

   Gerd