On Thu, Jan 09, 2020 at 04:57:24PM +0000, Luca Filipozzi wrote: > > > >> I'd encourage those of you who are in position to make Amazon listen > > > >> to get with the program and support virtio-rng. :-) > > > > Noah: chances of AWS supporting virtio-rng? > > > I wonder if the correct criterion for the cloud image is compatibility > > > with AWS and GCP only. I suppose a large number of deployment are based > > > on private cloud environments (OpenStack etc.). In addition to AWS and > > > GCP, there is also Azure, which is based on Hyper-V, which has a low > > > chance of getting support for virtio-rng for obvious reasons. > > > > The cloud kernel flavour currently targets AWS and Azure only. Hence > > the lack of support for virtio-rng. > > How is entropy starvation at boot solved for x86-64 in AWS / Azure?
RDRAND is available on amd64, and contributes early entropy. Our 5.4 kernel in sid does not suffer from a lack of entropy at boot on arm64 EC2 instances. I guess it could be due to the "random: try to actively add entropy rather than passively wait for it" that tytso mentioned earlier. I'm going to try to cherry-pick that into 4.19 and see if things speed up. Since we're already running it in 5.4, I guess it's safe... noah