From owner-freebsd-questions@freebsd.org Tue Jan 16 13:18:01 2018 Return-Path: Delivered-To: freebsd-questions@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id A0BC3EC2C95 for ; Tue, 16 Jan 2018 13:18:01 +0000 (UTC) (envelope-from g8kbvdave@googlemail.com) Received: from mail-wm0-x231.google.com (mail-wm0-x231.google.com [IPv6:2a00:1450:400c:c09::231]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 2E73078FA6 for ; Tue, 16 Jan 2018 13:18:00 +0000 (UTC) (envelope-from g8kbvdave@googlemail.com) Received: by mail-wm0-x231.google.com with SMTP id 141so8519784wme.3 for ; Tue, 16 Jan 2018 05:18:00 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language; bh=x2HPPIh41Y+6S+4lTWZHpn+NR2cAeMv3G3yuMDylfkg=; b=rspPmPeL0WbbUpRVpUV3pQcpT5f54wFppXmOuKt51ukzpVvsHJRPObwZ3wQ1gAYW+f ZFVV8AJmJEh9DEhPmAPiOu8eiHf5RHmN/thSJQ5qfAbcSjz2LId5O7hXStTGXc7IfPGE zhOti0ENDKtdLEaV6nI+6dFA7lTd8CaRnP8qywGWFglcXBm+RYgHViP+QAGpTWIgpIn8 iAyEFOPLmkYx5mBMPdp/FnbnK5AxFxXaw/A62Rv9zoDBaglHbhRzioOWzRtAS80cZcPp zH3seYBhfPtJhw73qGURX249NfbGCVwkI633kx6LnNsjSxxjzZEdEt9dbCnagTHO8f7s 47cw== X-Gm-Message-State: AKwxytcWNPQBzps7kXKxMP8zOPNOPR3dRePcectNVrj9c1fHq5HgYcfa 2hlje8GCmcs6sdMyDh/38Rpr5u/x X-Google-Smtp-Source: ACJfBotYFvhlhESJa33zdRfk4BoMH2KPFh77+jw2XlZaLgLsARhdLkmz68Xh1o1+IFWuzVvyBS5Lng== X-Received: by 10.28.111.219 with SMTP id c88mr14727507wmi.41.1516108678225; Tue, 16 Jan 2018 05:17:58 -0800 (PST) Received: from [192.168.2.55] ([217.41.35.220]) by smtp.gmail.com with ESMTPSA id o12sm2139067wrf.81.2018.01.16.05.17.56 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 16 Jan 2018 05:17:57 -0800 (PST) Subject: Speculation & meldown. Nothing new! To: freebsd-questions@freebsd.org References: From: Dave B Message-ID: <76499e59-497e-bb96-7adc-4484da8197d4@googlemail.com> Date: Tue, 16 Jan 2018 13:17:56 +0000 User-Agent: Mozilla/5.0 (X11; Linux i686; rv:52.0) Gecko/20100101 Thunderbird/52.5.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-GB Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit X-Content-Filtered-By: Mailman/MimeDel 2.1.25 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 16 Jan 2018 13:18:01 -0000 Here you go.  From SN show notes for episode 645, aired last week. From:-  https://www.grc.com/sn/sn-645-notes.pdf   Page 12 of 13. WhatWhat's Old is New Again... 1995: "The Intel 80x86 Processor Architecture: Pitfalls for Secure Systems." https://pdfs.semanticscholar.org/2209/42809262c17b6631c0f6536c91aaf7756857.pdf 1995: on page 9 under section "4.2 Security Flaws": Item 6. Prefetching may fetch otherwise inaccessible instructions in Virtual 8086 mode. (From a paper in 1992!) -- 25 years ago. Enjoy. Dave B.