On KVM guests where the virtio-rng device is available, and set as the
current rng, this udev rule will start rngd which will feed in the
host-provided entropy to /dev/random.

Signed-off-by: Amit Shah <redacted>
---
 90-virtio-rng.rules | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 90-virtio-rng.rules

diff --git a/90-virtio-rng.rules b/90-virtio-rng.rules
new file mode 100644
index 0000000..07f2f9c
--- /dev/null
+++ b/90-virtio-rng.rules

@@ -0,0 +1 @@
+KERNEL=="hw_random", ATTR{rng_current}=="virtio*", RUN+="/sbin/rngd -r /dev/hwrng"

-- 
1.9.3