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SubjectCommit d9e7972619334656 breaks KVM's virtio-rng-pci
Date
Hello,

the commit d9e7972619334656 ends up being responsible that using "-device virtio-rng-pci" in KVM no longer works.

From: Kees Cook <keescook@chromium.org>
Date: Mon, 3 Mar 2014 15:51:48 -0800
Subject: [PATCH] hwrng: add randomness to system from rng sources

When bringing a new RNG source online, it seems like it would make sense
to use some of its bytes to make the system entropy pool more random,
as done with all sorts of other devices that contain per-device or
per-boot differences.

When providing "-device virtio-rng-pci" to a kernel with the above commit, the kernel never finishes booting. It just stops. My guess it is waiting for some magic entropy to appear.

Maybe this is something that should be fixed in virtio-rng driver instead of reverting this patch, but I leave this to the experts in this area.

Regards

Marcel



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