Talked to Joanna at C1C3.
Qubes does not forward real randomness from `/dev/random` to VMs yet. They have no plans to add this feature yet.
Although Qubes installs `haveged` by default, it's not clear if that is random enough. Randomness is a very difficult topic. Difficult to get down the rabbit hole. It's better to bootstrap `haveged` with strong entropy and to have multiple sources of randomness.
In comparison, for `KVM` there is `VirtIO RNG`.
> VirtIO RNG is a paravirtualized device that is exposed as a hardware RNG device to the guest.
And I don't think they implemented this because they were bored. I think in this case it's better to be safe than sorry.
She said one could implement this using `qrexec` and that they would merge a patch implementing this.
General info on randomness:
Forum Discussion: https://www.whonix.org/forum/index.php/topic,870.0.html