It might be possible, just no one has implemented it in a way that does not require complex processing by trusted parts of system.
There is an attempt called XenGT (for Intel iGPUs), but I am not sure about its state and at least it is not integrated to Qubes yet. Regards, Vít Šesták 'v6ak' -- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to qubes-users+unsubscr...@googlegroups.com. To post to this group, send email to qubes-users@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/8f99b20c-82c8-4771-9cfc-460883e2d10a%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
