From owner-svn-src-stable-8@FreeBSD.ORG Sun Aug 16 15:32:15 2009 Return-Path: Delivered-To: svn-src-stable-8@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 929B2106568B; Sun, 16 Aug 2009 15:32:15 +0000 (UTC) (envelope-from xcllnt@mac.com) Received: from asmtpout025.mac.com (asmtpout025.mac.com [17.148.16.100]) by mx1.freebsd.org (Postfix) with ESMTP id 745518FC4D; Sun, 16 Aug 2009 15:32:15 +0000 (UTC) MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: text/plain; charset=us-ascii; format=flowed Received: from macbook-pro.lan.xcllnt.net ([75.101.29.67]) by asmtp025.mac.com (Sun Java(tm) System Messaging Server 6.3-8.01 (built Dec 16 2008; 32bit)) with ESMTPSA id <0KOH00KFB75P4N10@asmtp025.mac.com>; Sun, 16 Aug 2009 08:32:15 -0700 (PDT) From: Marcel Moolenaar In-reply-to: <3bbf2fe10908160241x64555c15oe185d429908f7131@mail.gmail.com> Date: Sun, 16 Aug 2009 08:32:12 -0700 Message-id: <90894806-263A-4BB5-AA5E-704EB24A6A0B@mac.com> References: <200908160212.n7G2CDUn097279@svn.freebsd.org> <3bbf2fe10908151919s17752057y53dd32fb02a857bb@mail.gmail.com> <3bbf2fe10908160241x64555c15oe185d429908f7131@mail.gmail.com> To: Attilio Rao X-Mailer: Apple Mail (2.1074) Cc: svn-src-stable@freebsd.org, svn-src-all@freebsd.org, Marcel Moolenaar , src-committers@freebsd.org, svn-src-stable-8@freebsd.org Subject: Re: svn commit: r196270 - in stable/8/sys: . amd64/include/xen cddl/contrib/opensolaris contrib/dev/acpica contrib/pf dev/ata dev/cxgb dev/xen/netfront dev/xen/xenpci ia64/ia64 modules/dtrace/dtnfsclie... X-BeenThere: svn-src-stable-8@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SVN commit messages for only the 8-stable src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 16 Aug 2009 15:32:15 -0000 On Aug 16, 2009, at 2:41 AM, Attilio Rao wrote: > 2009/8/16 Marcel Moolenaar : >> >> On Aug 15, 2009, at 7:19 PM, Attilio Rao wrote: >> >>> 2009/8/16 Marcel Moolenaar : >>>> >>>> Author: marcel >>>> Date: Sun Aug 16 02:12:13 2009 >>>> New Revision: 196270 >>>> URL: http://svn.freebsd.org/changeset/base/196270 >>>> >>>> Log: >>>> MFC rev 196268: >>>> Decouple ACPI CPU Ids from FreeBSD's cpuid. The ACPI Ids can be >>>> sparse, which causes a kernel assert. >>> >>> Can you be a bit more precise? >>> What kernel assert? >> >> In subr_smp.c, function smp_topo(): >> panic("Built bad topology at %p. CPU mask 0x%X != 0x%X", >> top, top->cg_mask, all_cpus); >> >> See also: >> http://docs.freebsd.org/cgi/getmsg.cgi?fetch=506001+0+archive/2009/freebsd-current/20090719.freebsd-current >> http://docs.freebsd.org/cgi/getmsg.cgi?fetch=626164+0+archive/2009/freebsd-current/20090719.freebsd-current > > lThat's very interesting. That probabilly means we will end without > any sparse CPUs IDs on all architectures? Yes. It also means that hot-swap CPUs are impossible to support for reasons that are unrelated to the technical problems of managing the appearance and disappearance of CPUs. -- Marcel Moolenaar xcllnt@mac.com