From owner-svn-src-head@freebsd.org Thu Mar 8 21:58:08 2018 Return-Path: Delivered-To: svn-src-head@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 6ED8FF3433D; Thu, 8 Mar 2018 21:58:08 +0000 (UTC) (envelope-from carpeddiem@gmail.com) Received: from mail-io0-x242.google.com (mail-io0-x242.google.com [IPv6:2607:f8b0:4001:c06::242]) (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 03CDD726CE; Thu, 8 Mar 2018 21:58:08 +0000 (UTC) (envelope-from carpeddiem@gmail.com) Received: by mail-io0-x242.google.com with SMTP id d71so1365604iog.4; Thu, 08 Mar 2018 13:58:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc; bh=5/Os8dzUISeGSUBq1XXNGmthG1EKFRkIK08+pNMI8AE=; b=QDjwFiHVJadOD6DMANJPtPrPsvR+z1TmsN0Gxq3Kbab9h9jggCYlHOP2YOu1UuSmRb +LY1WuTwH/nJi4qIAPTPakbMPYXSJx3tXQ5O2/ugHr4g4GEdU8WBPULko9R8H5P73FLT lgnrZJtbk7ZlAUFhJ4xmqFQIgI2GdyeE/6Id1pLlrDQCFhvvCBUjhja3RbGcnph10Y5s 9419JcQRYXiIi9PV89RT4fFjOy2v7D394XMkRKDh6UAXezFcIvpETvvXIZOBIJoCLpgN Fhftr/nsTThZ8hlo6bJQ6WWQUxvsfxEVQLt/Qf0pNVz6s/4crtKfyNVFcY0EmgEvSOpt l5ZA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:sender:in-reply-to:references:from :date:message-id:subject:to:cc; bh=5/Os8dzUISeGSUBq1XXNGmthG1EKFRkIK08+pNMI8AE=; b=g7KMujc0vLVuzurJ36bpWNBHIb7VNLfsK5EvGbIhJm90RH/AJDx16ul2Iy6kdLmpGY WrMB011OQou/1J2q3cbY1LnaWSswKsPa2ZY8eM2A4pJoKhYbHzI1f+5wWeN5lABb6GS7 U9X+h86R/CgJBBvyA20jK5/0cBynmpcKYtqBkYk+MjJnniQ6D6NugBPSScXJ5ZIsvKop qLwonbt3FX5W9oSbn5KVUJ1kJ8yV2G/jPmlXJ8yKkF8Pak92DEIlhphf2mCNVrJ5HIyu bO0Gsq2TP0et7upRSBSuPjeMJ+Z0fSyse+KMCXzKvQGjPCQ/ay+Q2+/+cG7zT/ku8SQ0 fT9Q== X-Gm-Message-State: APf1xPCcLuGDqelMflTVyc7U0Zf38I2b1kd2pi3ip9R1QHLiupycyR5G b1Ij708gHSabvh8fNcWMmJBOOS3dGtObZlXU2hOpBQ== X-Google-Smtp-Source: AG47ELuaw/mTNf6eq7qsNI5TYwjNrZQ13m8G0/IzJGb6+G4z5khMKHzVDFMxfEqULoGYUNKg1QZ8evI+5UXlKceCToQ= X-Received: by 10.107.141.12 with SMTP id p12mr33507713iod.288.1520546287267; Thu, 08 Mar 2018 13:58:07 -0800 (PST) MIME-Version: 1.0 Sender: carpeddiem@gmail.com Received: by 10.107.163.13 with HTTP; Thu, 8 Mar 2018 13:57:46 -0800 (PST) In-Reply-To: <201801151837.w0FIb3R7098459@repo.freebsd.org> References: <201801151837.w0FIb3R7098459@repo.freebsd.org> From: Ed Maste Date: Thu, 8 Mar 2018 16:57:46 -0500 X-Google-Sender-Auth: L8_welenpRbhi9S5DhNUzdCgWkI Message-ID: Subject: Re: svn commit: r328011 - in head/sys/amd64/vmm: amd intel To: Tycho Nightingale Cc: src-committers , svn-src-all@freebsd.org, svn-src-head@freebsd.org Content-Type: text/plain; charset="UTF-8" X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 08 Mar 2018 21:58:08 -0000 On 15 January 2018 at 13:37, Tycho Nightingale wrote: > Author: tychon > Date: Mon Jan 15 18:37:03 2018 > New Revision: 328011 > URL: https://svnweb.freebsd.org/changeset/base/328011 > > Log: > Provide some mitigation against CVE-2017-5715 by clearing registers > upon returning from the guest which aren't immediately clobbered by > the host. This eradicates any remaining guest contents limiting their > usefulness in an exploit gadget. Will you MFC this to stable/11?