[dpdk-dev] [PATCH v4 0/2] eal: choose initial PRNG seed source at runtime

[Dan Gora]

On Mon, Jun 29, 2020 at 6:06 PM Mattias Rönnblom
<mattias.ronnblom at ericsson.com> wrote:
>
> It's unlikely to fail, and if it does something is probably seriously
> wrong with your system. You also seem to think it might fail, since you
> take great care of setting errno and having non-zero return code in
> __rte_getentropy().

Well, no, I don't personally think that it will fail and certainly
even if a read call to /dev/random fails, the whole function will not
fail.  As I said, I was trying to emulate the glibc getentropy and all
its semantics.

>  From what I recall, it was Bruce that suggested rdseed should be
> included as one of the sources. I have no opinion on that particular
> subject, other than I think kernel-originated randomness should have
> priority.

In light of new attacks on rdseed, it should probably just be removed, IMHO.
https://www.phoronix.com/scan.php?page=article&item=crosstalk-srbds-vulnerability&num=1

thanks
d