From owner-freebsd-questions@freebsd.org Tue Jan 16 16:28:56 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 9D3EEE79660 for ; Tue, 16 Jan 2018 16:28:56 +0000 (UTC) (envelope-from gurenchan@gmail.com) Received: from mail-it0-x231.google.com (mail-it0-x231.google.com [IPv6:2607:f8b0:4001:c0b::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 6717B81A1E for ; Tue, 16 Jan 2018 16:28:56 +0000 (UTC) (envelope-from gurenchan@gmail.com) Received: by mail-it0-x231.google.com with SMTP id 196so5501833iti.5 for ; Tue, 16 Jan 2018 08:28:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=QXXQuPDhTzvU5rFCIhLlH37cKXFkAyfrY5s7qRgem3U=; b=G54CcXVI6vqFiRN3yrdYQaxkt/g/CSg+Q7ZYGI9S3k64eu9qOY17eazima0nd2tK8/ +3IvREm6sdTvS+rZWHbx6nM5b1EOR/E3I1TkNs6YxHAKO+1Eot/y30QjYQdQkU6gIi+k ARuB/hYMsRnbFXpTgufA8CAUmlJ1RgmNs3o28GSXCQjqWe+v10gBpgWn1WFX+r31Kve+ 5kkO58OPibWWmYSY4NZd3VS2GPgpB2X9JTDx6+0Tl3GBZnGOBbftLvnsXgRwDQ8eHEcm v1FMLI/9XGkZuJkRAK+cS0Wcguble/VHyXu8ORme0WOk/x8MigJom3t/lbA7PK+CSlDQ T/Hg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=QXXQuPDhTzvU5rFCIhLlH37cKXFkAyfrY5s7qRgem3U=; b=WzNpRhYMEULqO1BqtqUUqOisxv7BwafBYoWhF+yveY9BNKyQcXRr3yF5MyybWv/uBk 7oo9vsvARBqceq+4ohZiU5b/4ElDJ41nFFrb2PUA8FKWmZb9ghxGUfYxM9ozml8AmU3U wEGx9cGgpBwp7L9Y/fxpheA4FsM1TxS7urA24kWelRMtYEUOFyyZE7U8Uic4kDEFIlJp suXusNChhVK8+FMOAzx5I9FqzsVQKFuxDC0GEdgo2k3lYljuFufGh6dLur/zqGO90vmR MV4U2CX/KzPVIJU63EJL1ASzdIZWeyCByVslWB2jL+vekCotkWaRBgtz+A/jyl2hiPuz MtJA== X-Gm-Message-State: AKwxytc4KFv7wH3h31ebn/cogdh2nG98tQkBKnetnH5u7K6P85r7Hw0B d02lyo+xSG9mtvXdUOpz/jdNgz7+CvYk+qUAx30HMA== X-Google-Smtp-Source: ACJfBovKrOghdO7aqTrvG1culgl/a1rrj3WocxVkd9m8UnoPsikrmA5kS2J+8EujeZuoqVhrezsrsnBe1MtviEcMH+E= X-Received: by 10.36.238.194 with SMTP id b185mr5664178iti.100.1516120135594; Tue, 16 Jan 2018 08:28:55 -0800 (PST) MIME-Version: 1.0 Received: by 10.107.164.193 with HTTP; Tue, 16 Jan 2018 08:28:54 -0800 (PST) In-Reply-To: <76499e59-497e-bb96-7adc-4484da8197d4@googlemail.com> References: <76499e59-497e-bb96-7adc-4484da8197d4@googlemail.com> From: blubee blubeeme Date: Wed, 17 Jan 2018 00:28:54 +0800 Message-ID: Subject: Re: Speculation & meldown. Nothing new! To: Dave B Cc: FreeBSD Content-Type: text/plain; charset="UTF-8" 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 16:28:56 -0000 On Tue, Jan 16, 2018 at 9:17 PM, Dave B via freebsd-questions < freebsd-questions@freebsd.org> wrote: > 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/2209/42809262c17b6631c0f6536c91aaf7 > 756857.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. > > _______________________________________________ > freebsd-questions@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions- > unsubscribe@freebsd.org" > Yea but look at those single core performance speeds! /s How does performance stack up now when valid security practices are applied?