On Tue, 4 February 2014 12:39:28 -0800, H. Peter Anvin wrote: > > USB and the Ethernet PHY frequently do still have their own crystals, > for reasons not entirely clear to me. However, what all of these have > in common is that they are way out in the periphery.
Storage might be another source. We have had add_disk_randomness() forever. Flash also takes quite variable timings for writes and erases. Even if the timings are not random, they certainly change from block to block and depending on wear. I am less certain about reads. But one can run a few experiments and see how consistent the timings are. Jörn -- Linux is more the core point of a concept that surrounds "open source" which, in turn, is based on a false concept. This concept is that people actually want to look at source code. -- Rob Enderle -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
