From owner-cvs-src@FreeBSD.ORG Fri May 13 00:38:36 2005 Return-Path: Delivered-To: cvs-src@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 2F55D16A4CE; Fri, 13 May 2005 00:38:36 +0000 (GMT) Received: from ylpvm43.prodigy.net (ylpvm43-ext.prodigy.net [207.115.57.74]) by mx1.FreeBSD.org (Postfix) with ESMTP id B311C43D1F; Fri, 13 May 2005 00:38:35 +0000 (GMT) (envelope-from nate@root.org) Received: from pimout5-ext.prodigy.net (pimout5-ext.prodigy.net [207.115.63.73])j4D0ce9Q006691; Thu, 12 May 2005 20:38:40 -0400 X-ORBL: [64.171.185.67] Received: from [10.0.0.115] (adsl-64-171-185-67.dsl.snfc21.pacbell.net [64.171.185.67])j4D0cXFh438602; Thu, 12 May 2005 20:38:34 -0400 Message-ID: <4283F708.4020304@root.org> Date: Thu, 12 May 2005 17:38:32 -0700 From: Nate Lawson User-Agent: Mozilla Thunderbird 1.0.2 (X11/20050416) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Jacques Vidrine , cvs-src@FreeBSD.org, cvs-all@FreeBSD.org, src-committers@FreeBSD.org References: <20050513000600.8390E16A52A@hub.freebsd.org> In-Reply-To: <20050513000600.8390E16A52A@hub.freebsd.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: cvs commit: src/sys/amd64/amd64 mp_machdep.csrc/sys/amd64/include cpufunc.h src/sys/i386/i386 mp_machdep.c src/sys/i386/include cpufunc.h X-BeenThere: cvs-src@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: CVS commit messages for the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 13 May 2005 00:38:36 -0000 Jacques Vidrine wrote: > nectar 2005-05-13 00:05:56 UTC > > FreeBSD src repository > > Modified files: > sys/amd64/amd64 mp_machdep.c > sys/amd64/include cpufunc.h > sys/i386/i386 mp_machdep.c > sys/i386/include cpufunc.h > Log: > Add a knob for disabling/enabling HTT, "machdep.hyperthreading_allowed". > Default off due to information disclosure on multi-user systems. > > Submitted by: cperciva > Reviewed by: jhb > > Revision Changes Path > 1.254 +101 -0 src/sys/amd64/amd64/mp_machdep.c > 1.148 +8 -0 src/sys/amd64/include/cpufunc.h > 1.248 +101 -0 src/sys/i386/i386/mp_machdep.c > 1.144 +8 -0 src/sys/i386/include/cpufunc.h What's the problem? I hope this is not about timing attacks on crypto operations. -- Nate