On 07/16/2014 08:41 AM, Gleb Natapov wrote:
On Tue, Jul 15, 2014 at 07:48:06PM -0700, Andy Lutomirski wrote:
virtio-rng is both too complicated and insufficient for initial rng
seeding. It's far too complicated to use for KASLR or any other
early boot random number needs. It also provides /dev/random-style
bits, which means that making guest boot wait for virtio-rng is
unacceptably slow, and doing it asynchronously means that
/dev/urandom might be predictable when userspace starts.
This introduces a very simple synchronous mechanism to get
/dev/urandom-style bits.
>
Why can't you use RDRAND instruction for that?
You mean using it directly? I think simply for the very same reasons
as in c2557a303a ...
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
