From mboxrd@z Thu Jan 1 00:00:00 1970 From: Theodore Tso Subject: Re: [PATCH] drivers/net: remove network drivers' last few uses of IRQF_SAMPLE_RANDOM Date: Thu, 15 May 2008 17:47:21 -0400 Message-ID: <20080515214721.GP18825@mit.edu> References: <20080515142154.0595e475@core> <36D9DB17C6DE9E40B059440DB8D95F52052D71BB@orsmsx418.amr.corp.intel.com> <482C7B18.6060003@garzik.org> <482C7E53.3050300@hp.com> <482C8184.2030906@garzik.org> <482C8550.5000909@intel.com> <482C8D4D.3040702@garzik.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Jeff Garzik , "Kok, Auke" , Rick Jones , "Brandeburg, Jesse" , Alan Cox , netdev@vger.kernel.org, linux-kernel@vger.kernel.org To: Chris Peterson Return-path: Received: from www.church-of-our-saviour.org ([69.25.196.31]:37957 "EHLO thunker.thunk.org" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754477AbYEOVr4 (ORCPT ); Thu, 15 May 2008 17:47:56 -0400 Content-Disposition: inline In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: On Thu, May 15, 2008 at 01:01:36PM -0700, Chris Peterson wrote: > Please correct me if I'm wrong, but this thread's conclusions seem to be: > > * network interrupts are an inappropriate source of entropy (see my patch) > * headless servers need entropy, but should seek a better solution, > such as EGD, hardware RNG, or other kernel entropy sources (but that > is a separate task) > * TPM RNG is a separate task and, if implemented, should be in > drivers/char/hw_random/ The TPM RNG task is probably best done in a user space process, which might also do other things like pulling environmental noise from the sound card's microphone, etc. The problem is finding someone with the skills, time, and energy to create the appropriate user space daemon. All of the kernel interfaces already exist; it's just matter of implementing the user space support. - Ted