There is now a mailing list for virglrenderer library hosted at freedesktop. It is to be used for development discussion of the virgl->GL renderer library and for patches to it.
The git tree is also now hosted at:
My personal repo will only be used for my own development stuff.
I'll also get a freedesktop patchwork instance set up for this asap.
I'm also contemplating bugzilla vs phabricator.