x86 virtualization solution - kernel module source

 VirtualBox is a free x86 virtualization solution allowing a wide range
 of x86 operating systems such as Windows, DOS, BSD or Linux to run on a
 Linux system.
 .
 This package provides the source code for the virtualbox kernel module.
 The virtualbox package is also required in order to make use of these
 modules. Kernel sources or headers are required to compile this module.