From owner-cvs-src@FreeBSD.ORG Wed Nov 29 08:04:25 2006 Return-Path: <owner-cvs-src@FreeBSD.ORG> X-Original-To: cvs-src@freebsd.org Delivered-To: cvs-src@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 8B38016A47B for <cvs-src@freebsd.org>; Wed, 29 Nov 2006 08:04:25 +0000 (UTC) (envelope-from nate@root.org) Received: from root.org (root.org [67.118.192.226]) by mx1.FreeBSD.org (Postfix) with ESMTP id BE8E943CB8 for <cvs-src@freebsd.org>; Wed, 29 Nov 2006 08:04:24 +0000 (GMT) (envelope-from nate@root.org) Received: (qmail 81806 invoked from network); 29 Nov 2006 04:04:20 -0000 Received: from ppp-71-139-31-204.dsl.snfc21.pacbell.net (HELO ?10.0.5.59?) (nate-mail@71.139.31.204) by root.org with ESMTPA; 29 Nov 2006 04:04:20 -0000 Message-ID: <456D06BB.6010007@root.org> Date: Tue, 28 Nov 2006 20:04:11 -0800 From: Nate Lawson <nate@root.org> User-Agent: Thunderbird 1.5.0.8 (Windows/20061025) MIME-Version: 1.0 To: Maxim Sobolev <sobomax@FreeBSD.org> References: <20061129011937.4DEA816A5B0@hub.freebsd.org> In-Reply-To: <20061129011937.4DEA816A5B0@hub.freebsd.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: cvs-src@freebsd.org, src-committers@freebsd.org, cvs-all@freebsd.org Subject: Re: cvs commit: src/sys/i386/i386 local_apic.c src/sys/amd64/amd64 local_apic.c X-BeenThere: cvs-src@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: CVS commit messages for the src tree <cvs-src.freebsd.org> List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-src>, <mailto:cvs-src-request@freebsd.org?subject=unsubscribe> List-Archive: <http://lists.freebsd.org/pipermail/cvs-src> List-Post: <mailto:cvs-src@freebsd.org> List-Help: <mailto:cvs-src-request@freebsd.org?subject=help> List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-src>, <mailto:cvs-src-request@freebsd.org?subject=subscribe> X-List-Received-Date: Wed, 29 Nov 2006 08:04:25 -0000 Maxim Sobolev wrote: > sobomax 2006-11-29 01:19:23 UTC > > FreeBSD src repository > > Modified files: (Branch: RELENG_6) > sys/i386/i386 local_apic.c > sys/amd64/amd64 local_apic.c > Log: > Another attempt to MFC changes that prevent any accounting for the disabled > HTT cores. This time make code conditional on !defined(SCHED_ULE), since > SCHED_ULE is generally b0rken due to the fact that it doesn't honour > hlt_cpus_mask when scheduling processes like all other schedulers in the > system do. > > I am not sure if such SCHED_ULE behaviour should be considered as a > security flaw, basically it means that anybody running SCHED_ULE kernel > on HTT system still affected by FreeBSD-SA-05:09.htt. > > Revision Changes Path > 1.17.2.11 +16 -0 src/sys/amd64/amd64/local_apic.c > 1.17.2.11 +16 -0 src/sys/i386/i386/local_apic.c No, since FreeBSD-SA-05:09.htt is not a HTT problem, it's a cache problem that is exploitable on single thread/core systems as well. -- Nate