On Mon, 3 Feb 2014, Theodore Ts'o wrote: > > How about taking the saved registers from the interrupted CPU, xor'ing > > them all and calling the result random_get_entropy() on systems > > lacking a good cycles-counter? > > So we could take the struct pt_regs which we get from get_irq_regs(), > XOR them together and use them to feed into input[2] amd input[3] in > add_interrupt_randomness(). Or some other way of distributing the > values of all of the irq registers into the __u32 input[4] array.
Can we be sure we don't leak information this way? Just being paranoid... Maciej -- 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/
