Messages in this thread Patch in this message | | | From | Amit Shah <> | Subject | [PATCH 1/1] virtio: rng: add derating factor for use by hwrng core | Date | Tue, 12 Aug 2014 00:19:42 +0530 |
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The khwrngd thread is started when a hwrng device of sufficient quality is registered. The virtio-rng device is backed by the hypervisor, and we trust the hypervisor to provide real entropy. A malicious hypervisor is a scenario that's ruled out, so we are certain the quality of randomness we receive is perfectly trustworthy. Hence, we use 100% for the factor, indicating maximum confidence in the source.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
--- Pretty small and contained patch; would be great if it is picked up for 3.17. --- drivers/char/hw_random/virtio-rng.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/char/hw_random/virtio-rng.c b/drivers/char/hw_random/virtio-rng.c index 0027137..2e3139e 100644 --- a/drivers/char/hw_random/virtio-rng.c +++ b/drivers/char/hw_random/virtio-rng.c @@ -116,6 +116,7 @@ static int probe_common(struct virtio_device *vdev) .cleanup = virtio_cleanup, .priv = (unsigned long)vi, .name = vi->name, + .quality = 1000, }; vdev->priv = vi; -- 1.9.3
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