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

[Julien Grall <julien@xxxxxxx>]

On 03/06/2021 14:08, Julien Grall wrote:
> 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?
This has been sitting on the ML for quite a while. I was going to commit 
it as this looks uncontroversial but the patch doesn't apply on the 
lastest Xen (tools/libxl was moved in tools/libs/light).
@Sergiy, would you be able to rebase the patch?

Cheers,

--
Julien Grall