Is support for DMA-BUF possible or planned?

[Vasily Postnicov]

Hi! I maintain my own port of webkitgtk. In version 2.44.0 WebKit's
developers broke WebGL support on systems which do not have DMA-BUF (all
systems but Linux, maybe). Is support for DMA-BUF possible or planned in
FreeBSD as a part of the Linux compatibility layer?