Received: by 2002:a25:c593:0:0:0:0:0 with SMTP id v141csp3632853ybe; Sun, 15 Sep 2019 20:53:24 -0700 (PDT) X-Google-Smtp-Source: APXvYqyqMg0zyOEO3Ju+cTWzs/f/PUXvvc99jP+Cc2K4ZCtdA3XNYYdYREo+9iTiXMfsDIkdECKv X-Received: by 2002:a17:906:8041:: with SMTP id x1mr5454067ejw.132.1568606004237; Sun, 15 Sep 2019 20:53:24 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1568606004; cv=none; d=google.com; s=arc-20160816; b=bUc7Y9VJglLh+wwRfLy5LKvStrjm/DWkv8XHJch4Sm2W1WK8Kc/rot1RdUY/24GnlC 6A+1IgNP9wNsVExICk3TV62ivSaQ2QmSLN9S7pLewihOMdqeeWmqd14mhGRRviqkkbv0 dqDzH6Cxq8LqVV7wMrY/8BO0CTPiGvmW8194Q03u/MTCnRT6a4owaHg8d3KEK+fmwr2l UuZ4E0TlJTik69Q3sUCaGhm14VlPpYsNWl1dwnp+eszZf+7ITSbWuAHgg9oal5AAk6m7 6ORTY3lbQeELH2ycCttoVTn5yGpmz1hrhtK+GfomqMPZ+qJEqYRVpInssddAQzTO8Oso lHeQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:message-id:subject:cc:to:from:date; bh=JTdA+Xbt8BE6/Z+Le/eQH3Us3caOubICMEPFWT2qxJQ=; b=E8uojAVmQtgHosGSaQINAx54KNcncowFerkEAxMaUpkYkNmV6LZe9R0hpIaIgsNpHK EXG0nikBgcBMI0yDR99QNwAWr+J0tBq0PP5EP78TDW2thZq23qIPHmDr3nZ5zqWZe/yS CLMZW00R1VsdOXj0bXQfMlDzVW9XvkhVPurkRYq3tgzL+fjrh9zU2Eiq9MyRIvG2Vys0 iRDBPXwsOio89TG6Yucj/HIC0w8M5wXU1dnHNr8aEgsCZExw3QyM/HDBS8yJkJZAm2Mq w1zI9Q541VAK+6hiV6QL7tCPvToIeC07bEe1snSuEOLK45cAKADMch08ZvC1n0/1HEH9 UZpg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-ext4-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-ext4-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id r26si1676572eds.443.2019.09.15.20.52.54; Sun, 15 Sep 2019 20:53:24 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-ext4-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-ext4-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-ext4-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728988AbfIPDwy (ORCPT + 99 others); Sun, 15 Sep 2019 23:52:54 -0400 Received: from helcar.hmeau.com ([216.24.177.18]:33832 "EHLO fornost.hmeau.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727387AbfIPDwy (ORCPT ); Sun, 15 Sep 2019 23:52:54 -0400 Received: from gwarestrin.arnor.me.apana.org.au ([192.168.0.7]) by fornost.hmeau.com with smtp (Exim 4.89 #2 (Debian)) id 1i9i41-0000sf-QO; Mon, 16 Sep 2019 13:52:34 +1000 Received: by gwarestrin.arnor.me.apana.org.au (sSMTP sendmail emulation); Mon, 16 Sep 2019 13:52:28 +1000 Date: Mon, 16 Sep 2019 13:52:28 +1000 From: Herbert Xu To: "Theodore Y. Ts'o" Cc: torvalds@linux-foundation.org, darwish.07@gmail.com, adilger.kernel@dilger.ca, jack@suse.cz, rstrode@redhat.com, mccann@jhu.edu, zachary@baishancloud.com, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: Linux 5.3-rc8 Message-ID: <20190916035228.GA1767@gondor.apana.org.au> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190911160729.GF2740@mit.edu> X-Newsgroups: apana.lists.os.linux.kernel User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-ext4-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org Theodore Y. Ts'o wrote: > > Ultimately, though, we need to find *some* way to fix userspace's > assumptions that they can always get high quality entropy in early > boot, or we need to get over people's distrust of Intel and RDRAND. > Otherwise, future performance improvements in any part of the system > which reduces the number of interrupts is always going to potentially > result in somebody's misconfigured system or badly written > applications to fail to boot. :-( Can we perhaps artifically increase the interrupt rate while the CRNG is not initialised? Cheers, -- Email: Herbert Xu Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt