Re: [PATCH] virtio: rng: add derating factor for use by hwrng core

[H. Peter Anvin]

On 08/13/2014 12:09 PM, Rusty Russell wrote:
> The khwrngd thread is started when a hwrng device of sufficient
> quality is registered.  The virtio-rng device is backed by the
> hypervisor, and we trust the hypervisor to provide real entropy.
> 
> A malicious hypervisor is a scenario that's irrelevant -- such a setup
> is bound to cause all sorts of badness, and a compromised hwrng is not
> the biggest threat.
> 
> Given this, we are certain the quality of randomness we receive is
> perfectly trustworthy.  Hence, we use 100% for the factor, indicating
> maximum confidence in the source.
> 
> Signed-off-by: Amit Shah <amit.shah@xxxxxxxxxx>
> Signed-off-by: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
> ---
> Pretty small and contained patch; would be great if it is picked up for
> 3.17.
> 
> v2: re-word commit msg
> 
> [Agreed, re-sending to Linus with SOB before jumping on plane]

Reviewed-by: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/