From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758518AbYESJFj (ORCPT ); Mon, 19 May 2008 05:05:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756605AbYESJFU (ORCPT ); Mon, 19 May 2008 05:05:20 -0400 Received: from ozlabs.org ([203.10.76.45]:42257 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755349AbYESJFS (ORCPT ); Mon, 19 May 2008 05:05:18 -0400 From: Rusty Russell To: Jeremy Fitzhardinge Subject: Re: [PATCH 2/2] lguest: virtio-rng support Date: Mon, 19 May 2008 19:05:10 +1000 User-Agent: KMail/1.9.9 Cc: "H. Peter Anvin" , Theodore Tso , Herbert Xu , Jeff Garzik , LKML , virtualization@lists.linux-foundation.org, Christian Borntraeger , Matt Mackall , Johannes Berg References: <482C8595.5030509@garzik.org> <200805171628.03801.rusty@rustcorp.com.au> <482E8D75.10606@goop.org> In-Reply-To: <482E8D75.10606@goop.org> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200805191905.11452.rusty@rustcorp.com.au> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Saturday 17 May 2008 17:47:01 Jeremy Fitzhardinge wrote: > But the host->guest protocol should include the number of bits estimated > entropy along with the bits themselves. If we go down that path, we have to come up with a way of feeding that information to guest userspace. Patches welcome. If we meanwhile assume entropy == #bits, it fits the current /dev/hwrng model, and we can add an entropy count later if we want to change that. I'll change my lguest implementation to suck from /dev/random, since noone else seems to consider its depletion to be a real issue. It's no worse than what any other process can do. Thanks, Rusty.