From: Herbert Xu Subject: Re: [PATCH 0/5] Feed entropy pool via high-resolution clocksources Date: Sun, 19 Jun 2011 08:07:58 -0700 Message-ID: <20110619150758.GB14723@gondor.apana.org.au> References: <4DF77BBC.8090702@redhat.com> <1308071629.15617.127.camel@calx> <4DF7C1CD.4060504@redhat.com> <1308087902.15617.208.camel@calx> <4DF7E5FB.3080907@redhat.com> <1308093142.15617.233.camel@calx> <4DFBAF75.30505@zytor.com> <1308342487.15617.552.camel@calx> <4DFD2972.7020603@zytor.com> <20110619133843.GA2900@neilslaptop.think-freely.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: "H. Peter Anvin" , Matt Mackall , Jarod Wilson , linux-crypto@vger.kernel.org, "Venkatesh Pallipadi (Venki)" , Thomas Gleixner , Ingo Molnar , John Stultz , "David S. Miller" , Steve Grubb , Fenghua Yu To: Neil Horman Return-path: Received: from helcar.apana.org.au ([209.40.204.226]:33591 "EHLO fornost.hengli.com.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754142Ab1FSPI1 (ORCPT ); Sun, 19 Jun 2011 11:08:27 -0400 Content-Disposition: inline In-Reply-To: <20110619133843.GA2900@neilslaptop.think-freely.org> Sender: linux-crypto-owner@vger.kernel.org List-ID: On Sun, Jun 19, 2011 at 09:38:43AM -0400, Neil Horman wrote: > > It sounds to me like, if its desireous to bypass the entropy pool, then we > should bypass the /dev/random path altogether. Why not write a hwrng driver > that can export access to the rdrand instruction via a misc device. I presume the rdrand instruction can be used from user-space directly. Cheers, -- Email: Herbert Xu Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt