Re: [XEN PATCH v2] libxl/arm: provide guests with random seed

[Julien Grall <julien@xxxxxxx>]

Hi,

On 27/05/2021 09:52, Sergiy Kibrik wrote:
> Pass 128 bytes of random seed via FDT, so that guests' CRNGs are better seeded
> early at boot. This is larger than ChaCha20 key size of 32, so each byte of
> CRNG state will be mixed 4 times using this seed. There does not seem to be
> advantage in larger seed though.
>
> Depending on its configuration Linux can use the seed as device randomness
> or to just quickly initialize CRNG.
> In either case this will provide extra randomness to further harden CRNG.
>
> CC: Julien Grall <julien@xxxxxxx>
> Signed-off-by: Sergiy Kibrik <Sergiy_Kibrik@xxxxxxxx>
Reviewed-by: Julien Grall <jgrall@xxxxxxxxxx>

Ian, Wei, can we get an ack for this patch?

Cheers,

--
Julien Grall