Date: Sun, 16 Aug 2009 08:32:12 -0700 From: Marcel Moolenaar <xcllnt@mac.com> To: Attilio Rao <attilio@FreeBSD.org> Cc: svn-src-stable@freebsd.org, svn-src-all@freebsd.org, Marcel Moolenaar <marcel@freebsd.org>, 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... Message-ID: <90894806-263A-4BB5-AA5E-704EB24A6A0B@mac.com> In-Reply-To: <3bbf2fe10908160241x64555c15oe185d429908f7131@mail.gmail.com> References: <200908160212.n7G2CDUn097279@svn.freebsd.org> <3bbf2fe10908151919s17752057y53dd32fb02a857bb@mail.gmail.com> <C3941110-D8FB-48BF-A2D8-1472492EBCFA@mac.com> <3bbf2fe10908160241x64555c15oe185d429908f7131@mail.gmail.com>
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On Aug 16, 2009, at 2:41 AM, Attilio Rao wrote: > 2009/8/16 Marcel Moolenaar <xcllnt@mac.com>: >> >> On Aug 15, 2009, at 7:19 PM, Attilio Rao wrote: >> >>> 2009/8/16 Marcel Moolenaar <marcel@freebsd.org>: >>>> >>>> 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
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