From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751971Ab3KMX0k (ORCPT ); Wed, 13 Nov 2013 18:26:40 -0500 Received: from terminus.zytor.com ([198.137.202.10]:57552 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751294Ab3KMX0c (ORCPT ); Wed, 13 Nov 2013 18:26:32 -0500 User-Agent: K-9 Mail for Android In-Reply-To: <20131113232349.GA13970@amd.pavel.ucw.cz> References: <1381450698-28710-4-git-send-email-keescook@chromium.org> <20131111182046.GA14961@gmail.com> <20131113181600.GA6160@amd.pavel.ucw.cz> <5283C7A8.2010902@linux.intel.com> <20131113232349.GA13970@amd.pavel.ucw.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Subject: Re: [tip:x86/kaslr] x86, kaslr: Provide randomness functions From: "H. Peter Anvin" Date: Wed, 13 Nov 2013 15:25:46 -0800 To: Pavel Machek , "H. Peter Anvin" CC: Ingo Molnar , linux-kernel@vger.kernel.org, keescook@chromium.org, tglx@linutronix.de, linux-tip-commits@vger.kernel.org Message-ID: <2482e945-c263-4273-ad09-de83a830ecd6@email.android.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org No, it literally doesn't exist yet. As in it isn't in memory at the point this is run. Pavel Machek wrote: >On Wed 2013-11-13 10:40:40, H. Peter Anvin wrote: >> On 11/13/2013 10:16 AM, Pavel Machek wrote: >> > >> > If it is not performance critical, why not use "/dev/random" >> > infrastructure? >> > >> >> Because it doesn't exist yet? > >Would it be feasible to initialize /dev/random earlier instead of >reinventing it? > Pavel -- Sent from my mobile phone. Please pardon brevity and lack of formatting.