From: Amit Shah Date: Mon, 11 Aug 2014 18:35:41 +0000 (+0530) Subject: virtio: rng: add derating factor for use by hwrng core X-Git-Tag: omap-for-v3.17/fixes-against-rc2~47^2 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=34679ec7a0c45da8161507e1f2e1f72749dfd85c;p=pandora-kernel.git virtio: rng: add derating factor for use by hwrng core 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 or badly-implemented hypervisor is a scenario that's irrelevant -- such a setup is bound to cause all sorts of badness, and a compromised hwrng is the least of the user's worries. Given this, we might as well assume that 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 Reviewed-by: H. Peter Anvin Reviewed-by: Amos Kong Signed-off-by: Rusty Russell --- Reading git-diff-tree failed