Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754184AbZJ1Oqx (ORCPT ); Wed, 28 Oct 2009 10:46:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752994AbZJ1Oqw (ORCPT ); Wed, 28 Oct 2009 10:46:52 -0400 Received: from snt0-omc1-s27.snt0.hotmail.com ([65.55.90.38]:5987 "EHLO snt0-omc1-s27.snt0.hotmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752104AbZJ1Oqw (ORCPT ); Wed, 28 Oct 2009 10:46:52 -0400 Message-ID: X-Originating-IP: [164.116.126.146] From: Yuhong Bao To: CC: , , , , , Subject: RE: [X86] Fix up silly i1586 boot message. Date: Wed, 28 Oct 2009 07:46:54 -0700 Importance: Normal In-Reply-To: References: <20080528165713.GA412@redhat.com> X-OriginalArrivalTime: 28 Oct 2009 14:46:53.0584 (UTC) FILETIME=[7D58C900:01CA57DD] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1821 Lines: 41 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 > On Wednesday 2009-10-28 04:08=2C Yuhong Bao wrote: >>=20 >> >>> Intel started it first with picking up a ridiculous number for the fami= ly >>> ID for the P4 line. There is no technical justification for not keeping >>> these numbers consecutive. > > Once one knows that there are 4 bits for the family field=2C 15 is not > such a strange value - it is the last value=2C one could take it as > "reserved=2C and look elsewhere". Indeed=2C as I said=2C AMD began to use the extended family field with the = K10. >>[...] Intel has assigned family 7 for the original Itanium processor >>[...] there was a bug in original NT 4 truncating family IDs >>returned by CPUID [...] > > That would explain why Intel still shows an oldfashioned family=3D6 on > many contemporary processors (e.g. core i7). BUT=2C AMD64 processors > have family=3D15 "almost throughout"=2C and so seem to have at least some > Intel models.=A0See my second mailing post message for why. > So that tells us that either NT4 works=2C or nobody uses > NT4 on fam15s.Family 15 truncated to 3 bits is family 7=2C which do work = with NT 4=2C while family 8 truncated to 3 bits is family 0. Yuhong bao =20 _________________________________________________________________ Windows 7: Simplify your PC. Learn more. http://www.microsoft.com/Windows/windows-7/default.aspx?ocid=3DPID24727::T:= WLMTAGL:ON:WL:en-US:WWL_WIN_evergreen1:102009= -- 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/