Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261775AbVAHATp (ORCPT ); Fri, 7 Jan 2005 19:19:45 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261620AbVAHATR (ORCPT ); Fri, 7 Jan 2005 19:19:17 -0500 Received: from mail.tyan.com ([66.122.195.4]:6151 "EHLO tyanweb.tyan") by vger.kernel.org with ESMTP id S261762AbVAHARP (ORCPT ); Fri, 7 Jan 2005 19:17:15 -0500 Message-ID: <3174569B9743D511922F00A0C943142307291358@TYANWEB> From: YhLu To: jamesclv@us.ibm.com Cc: Andi Kleen , Matt Domsch , linux-kernel@vger.kernel.org, discuss@x86-64.org, suresh.b.siddha@intel.com Subject: RE: 256 apic id for amd64 Date: Fri, 7 Jan 2005 16:28:49 -0800 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1754 Lines: 60 Then sepertate that into init_amd and init_intel. YH -----Original Message----- From: James Cleverdon [mailto:jamesclv@us.ibm.com] Sent: Friday, January 07, 2005 4:13 PM To: YhLu Cc: Andi Kleen; Matt Domsch; linux-kernel@vger.kernel.org; discuss@x86-64.org; suresh.b.siddha@intel.com Subject: Re: 256 apic id for amd64 Clustered APIC systems need the phys_proc_id to come from the APIC ID register. Intel prefers that non-clustered systems get their phys_proc_id from the cpuid opcode. So, using c->x86_apicid is unlikely to satisfy both parties. On Friday 07 January 2005 04:04 pm, YhLu wrote: > arch/x86_64/kernel/setup.c > > static void __init detect_ht(struct cpuinfo_x86 *c) > > phys_proc_id[cpu] = phys_pkg_id(index_msb); > > ---> > Phy_proc_id[cpu] = cpu_to_node[cpu]; > Or > // that is initial apicid > phys_proc_id[cpu] = c->x86_apicid >> > hweight32(c->x86_num_cores - 1); > > YH > > -----Original Message----- > From: Andi Kleen [mailto:ak@muc.de] > Sent: Friday, January 07, 2005 2:18 PM > To: YhLu > Cc: Matt Domsch; linux-kernel@vger.kernel.org; discuss@x86-64.org; > jamesclv@us.ibm.com; suresh.b.siddha@intel.com > Subject: Re: 256 apic id for amd64 > > On Fri, Jan 07, 2005 at 01:44:19PM -0800, YhLu wrote: > > Can you consider to use c->x86_apicid to get phy_proc_id, that is > > initial apicid.? > > Where? > > -Andi -- James Cleverdon IBM LTC (xSeries Linux Solutions) {jamesclv(Unix, preferred), cleverdj(Notes)} at us dot ibm dot comm - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/