Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750875AbVLBWHu (ORCPT ); Fri, 2 Dec 2005 17:07:50 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750913AbVLBWHu (ORCPT ); Fri, 2 Dec 2005 17:07:50 -0500 Received: from zproxy.gmail.com ([64.233.162.198]:38374 "EHLO zproxy.gmail.com") by vger.kernel.org with ESMTP id S1750891AbVLBWHt (ORCPT ); Fri, 2 Dec 2005 17:07:49 -0500 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:references; b=S2SoQDl6zK+K0IdnU+02cf1yUPPqxh9Ta+xn2jlA+sxdzmoqz+2/C+nhEEA3yeUK9BJlcp7OkasE6CwODaEjg24hdFfw4Qa3VqpmGDCI5IqI7UEUK5eAEfz+0VB696/uoseRiIV61cz92cuqhduLhhIC1aPPNNdJGPRaM2n+9pU= Message-ID: Date: Fri, 2 Dec 2005 14:07:47 -0800 From: Keith Mannthey To: Bharath Ramesh Subject: Re: Only one processor detected in 8-Way opteron in 32-bit mode Cc: "linux-kernel@vger.kernel.org" In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_1006_3002813.1133561267089" References: Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1666 Lines: 54 ------=_Part_1006_3002813.1133561267089 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Welcome to hardware bring up. Ok I looked a little closer at the story. In x86_64 the only check for valid apic is apicid < MAX_APICS which make sense to me. I386 has this concept of version. Where the valid check is diffrent if (version >=3D 0x14) return apicid < 0xff; else return apicid < 0xf; Now the patch is sent before was a litle in haste. Your apic version is 16. The valid check returns false because apicid is greater that 0xf (0x15). Most likey the bios entry for the apic version is wrong but I don't know much about that or why it matters. So what does this all mean. Legacy..... Give this patch a whirl. Thanks, Keith ------=_Part_1006_3002813.1133561267089 Content-Type: application/octet-stream; name=apicid.fix Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="apicid.fix" --- arch/i386/kernel/mpparse.c.orig 2005-12-01 15:20:51.000000000 -0800 +++ arch/i386/kernel/mpparse.c 2005-12-01 15:21:19.000000000 -0800 @@ -112,9 +112,10 @@ #else static int MP_valid_apicid(int apicid, int version) { - if (version >= 0x14) +/* if (version >= 0x14) return apicid < 0xff; else +*/ return apicid < MAX_APICS; } #endif ------=_Part_1006_3002813.1133561267089-- - 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/