From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 49EEDC4CEC9 for ; Wed, 18 Sep 2019 13:40:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1E707208C0 for ; Wed, 18 Sep 2019 13:40:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731175AbfIRNko (ORCPT ); Wed, 18 Sep 2019 09:40:44 -0400 Received: from gardel.0pointer.net ([85.214.157.71]:41628 "EHLO gardel.0pointer.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727263AbfIRNkl (ORCPT ); Wed, 18 Sep 2019 09:40:41 -0400 Received: from gardel-login.0pointer.net (gardel.0pointer.net [IPv6:2a01:238:43ed:c300:10c3:bcf3:3266:da74]) by gardel.0pointer.net (Postfix) with ESMTP id 241C7E80FFC; Wed, 18 Sep 2019 15:40:40 +0200 (CEST) Received: by gardel-login.0pointer.net (Postfix, from userid 1000) id D1D6B160ADC; Wed, 18 Sep 2019 15:40:39 +0200 (CEST) Date: Wed, 18 Sep 2019 15:40:39 +0200 From: Lennart Poettering To: Martin Steigerwald Cc: "Ahmed S. Darwish" , Linus Torvalds , "Theodore Y. Ts'o" , Willy Tarreau , Matthew Garrett , Vito Caputo , Andreas Dilger , Jan Kara , Ray Strode , William Jon McCann , "Alexander E. Patrakov" , zhangjs , linux-ext4@vger.kernel.org, lkml Subject: Re: Linux 5.3-rc8 Message-ID: <20190918134039.GB32346@gardel-login> References: <2658007.Cequ2ms4lF@merkaba> <20190917205234.GA1765@darwi-home-pc> <1722575.Y5XjozQscI@merkaba> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1722575.Y5XjozQscI@merkaba> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Di, 17.09.19 23:38, Martin Steigerwald (martin@lichtvoll.de) wrote: > (I know that it still with /dev/urandom, so if it is using RDRAND now, > this may indeed be different, but would it then deplete entropy the CPU > has available and that by default is fed into the Linux crng as well > (even without trusting it completely)?) Neither RDRAND nor /dev/urandom know a concept of "depleting entropy". That concept does not exist for them. It does exist for /dev/random, but only crazy people use that. systemd does not. Lennart -- Lennart Poettering, Berlin