Footnote taking width of *both* body and margin note

I am wondering how can I adjust geometry parameters (or using other packages) to make the layout of footnote taking the width of BOTH body and margin note.

Thanks,

-

It can be done, provided you use only onesided typesetting, or footnotes on left hand pages will appear as hanging from nowhere.

\documentclass[a4paper]{article}

\usepackage{lipsum}

\usepackage{etoolbox}
\makeatletter
\patchcmd\@footnotetext
{\hsize\columnwidth}