From owner-cvs-src@FreeBSD.ORG Sat Mar 11 01:59:36 2006 Return-Path: X-Original-To: cvs-src@freebsd.org 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 864F516A5CD; Sat, 11 Mar 2006 01:59:16 +0000 (GMT) (envelope-from jhb@freebsd.org) Received: from server.baldwin.cx (66-23-211-162.clients.speedfactory.net [66.23.211.162]) by mx1.FreeBSD.org (Postfix) with ESMTP id E8AE444361; Fri, 10 Mar 2006 12:58:39 +0000 (GMT) (envelope-from jhb@freebsd.org) Received: from zion.baldwin.cx (zion.baldwin.cx [192.168.0.7]) (authenticated bits=0) by server.baldwin.cx (8.13.4/8.13.4) with ESMTP id k2ACvghS053506; Fri, 10 Mar 2006 07:57:43 -0500 (EST) (envelope-from jhb@freebsd.org) From: John Baldwin To: Yar Tikhiy Date: Fri, 10 Mar 2006 07:48:06 -0500 User-Agent: KMail/1.8.3 References: <200603091623.k29GNFf9003993@repoman.freebsd.org> <20060310102001.GX4474@comp.chem.msu.su> In-Reply-To: <20060310102001.GX4474@comp.chem.msu.su> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Message-Id: <200603100748.08275.jhb@freebsd.org> X-Virus-Scanned: ClamAV 0.87.1/1321/Thu Mar 9 23:54:15 2006 on server.baldwin.cx X-Virus-Status: Clean X-Spam-Status: No, score=-3.1 required=4.2 tests=ALL_TRUSTED,AWL,BAYES_00 autolearn=ham version=3.1.0 X-Spam-Checker-Version: SpamAssassin 3.1.0 (2005-09-13) on server.baldwin.cx Cc: cvs-src@freebsd.org, src-committers@freebsd.org, cvs-all@freebsd.org Subject: Re: cvs commit: src/sys/i386/i386 mpapic.c X-BeenThere: cvs-src@freebsd.org X-Mailman-Version: 2.1.5 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: Sat, 11 Mar 2006 01:59:36 -0000 On Friday 10 March 2006 05:20 am, Yar Tikhiy wrote: > On Thu, Mar 09, 2006 at 04:23:15PM +0000, John Baldwin wrote: > > jhb 2006-03-09 16:23:15 UTC > > > > FreeBSD src repository > > > > Modified files: (Branch: RELENG_4) > > sys/i386/i386 mpapic.c > > Log: > > Revert the previous change. Even though Intel insists that the > > behavior this change restores is wrong, it turns out the "proper" method > > is worse in practice for existing machines. This is probably due to the > > fact that using fixed priority with a physical broadcast destination > > effectively broadcasts interrupts to all CPUs. Fixing that would requi= re > > a lot more work than just restoring the previous "incorrect" behavior a= nd > > would probably be riskier as well. > > > > PR: kern/94160 > > Reported by: Richard Wiwatowski rjwiwat at internode dot on dot net > > > > Revision Changes Path > > 1.37.2.9 +3 -3 src/sys/i386/i386/mpapic.c > > This problem cannot affect a kernel unless it has been built > with "options SMP", can it? Thanks! Correct. Strictly speaking it's under options APIC_IO, but on 4.x those two options are basically tied together. =2D-=20 John Baldwin =A0<>< =A0http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" =A0=3D =A0http://www.FreeBSD.org