Re: [Qemu-discuss] [libvirt-users] Efficacy of jitterentropy RNG on qemu-kvm Guests

[Martin Kletzander]

On Fri, Aug 10, 2018 at 08:33:00PM +0000, procmem wrote:
> Hello. I'm a distro maintainer and was wondering about the efficacy of
> entropy daemons like haveged and jitterentropyd in qemu-kvm. One of the
> authors of haveged [0] pointed out if the hardware cycles counter is
> emulated and deterministic, and thus predictible. He therefore does not
> recommend using HAVEGE on those systems. Is this the case with KVM's
> counters?

I don't know the answer.  But try asking on address@hidden or maybe
KVM-related ML.

Have a nice day,
Martin

> PS. I will be setting VM CPU settings to host-passthrough.
>
> Bonus: Also if anyone knows the answer to this question about Xen please
> let me know because its the other main platform we support and they
> don't have the luxury of virtio-rng in PVH mode.
>
> Thanks.
>
> [0]
> https://github.com/BetterCrypto/Applied-Crypto-Hardening/commit/cf7cef7a870c1b77089b1bd6209ded6525b5a4e0#commitcomment-23006392
>
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