Gerd Hoffmann wrote: > On 04/20/10 23:31, Ian Molton wrote: > > >Using virtio-rng means that the data is going into the guest > >kernels hwrng subsystem. > > Which is *the* major advantage of the virtio-rng driver. In case the > guest kernel is recent enougth to have support for it, it will > JustWork[tm]. No need for guest configuration, no need for some > userspace tool. I'd like to see this driver being merged. > > With any kind of serial port (be it a emulated 16550 or virtio-serial) > you'll need some daemon running inside the guest grabbing entropy data > from the port and feeding it back into the kernel.
That's a bunch of false assumptions. There's no reason a hwrng connector to virtio-serial could not be automatic in a similar way to the console. But enough of that: It's history now; the guest virtio-rng has existed for more than a year. It is also amazingly short and simple. Yay for Rusty! I don't object to virtio-rng; I think it's fine in principle and would be happy to see the existing guests which have a virtio-rng driver make use of it. A bit of overlapping functionality is rife in emulators anyway :-) -- Jamie
