Il 01/03/2013 21:13, Stefan Berger ha scritto: > On 03/01/2013 02:37 PM, H. Peter Anvin wrote: >> On 02/28/2013 04:36 PM, Eric Blake wrote: >>> Stefan Berger and I discovered on IRC that virtio-rng is unable to >>> support fd passing. We attempted: >>> >>> qemu-system-x86_64 ... -add-fd >>> set=4,fd=34,opaque=RDONLY:/dev/urandom >> ^^^^^^^^^^^^ >>> -object rng-random,id=rng0,filename=/dev/fdset/4 -device >>> virtio-rng-pci,rng=rng0,bus=pci.0,addr=0x6 >>> >> Unrelated, but you really, really, really don't want to pass >> /dev/urandom there, use /dev/random. > > From what I am reading about /dev/random is that it will start blocking > once not enough entropy is available anymore.
Yes, and the purpose of virtio-rng is not to provide fancy random numbers. It's to provide actual entropy. Paolo
