Re: [PATCH 2/2] lguest: virtio-rng support

["H. Peter Anvin" <hpa@zytor.com>]

Johannes Berg wrote:
>> +
>> +/* Our random number generator device reads from /dev/urandom into the Guest's
>> + * input buffers.  The usual case is that the Guest doesn't want random numbers
>> + * and so has no buffers although /dev/urandom is still readable, whereas
>> + * console is the reverse.
> 
> Is it really a good idea to use the hosts /dev/urandom to fill the
> guests /dev/random?

Only if you have an entropy estimate to go with it.  It's still dubious, 
though: the guests own pool will do its own mixing, so you might as well 
pull from /dev/random in the host as being a genuine entropy source and 
only add what entropy is available.

	-hpa