Created attachment 597566 [details, diff] patch to compile with kernel 5.4.0 The attached patch works for me. A better solution would be to create an ebuild for Virtualbox 6.1
Created attachment 597838 [details, diff] fix fall_through defines Here are official patches: https://www.virtualbox.org/changeset/81586/vbox?format=diff https://www.virtualbox.org/changeset/81587/vbox?format=diff https://www.virtualbox.org/changeset/81649/vbox?format=diff And I needed the attached fall-through.patch from https://lkml.org/lkml/2019/10/15/1009. BTW: The modules vboxguest and vboxvideo are in linux 5.4 now. The last one (vboxsf) gets in there maybe with linux 5.5.
