Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757997AbZATDgP (ORCPT ); Mon, 19 Jan 2009 22:36:15 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754214AbZATDf6 (ORCPT ); Mon, 19 Jan 2009 22:35:58 -0500 Received: from turing-police.cc.vt.edu ([128.173.14.107]:54115 "EHLO turing-police.cc.vt.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754175AbZATDf5 (ORCPT ); Mon, 19 Jan 2009 22:35:57 -0500 X-Mailer: exmh version 2.7.2 01/07/2005 with nmh-1.2 To: Suresh Siddha Cc: Avuton Olrich , "H. Peter Anvin" , LKML , Ingo Molnar Subject: Re: Fail to early boot with v2.6.27-rc2 to at least v2.6.29-rc2 due to dc1e35c In-Reply-To: Your message of "Mon, 19 Jan 2009 13:57:36 PST." <20090119215736.GE31356@linux-os.sc.intel.com> From: Valdis.Kletnieks@vt.edu References: <3aa654a40901190604l2149c592ne4fbf782fa46655f@mail.gmail.com> <4974CC8B.1030403@zytor.com> <3aa654a40901191131p7c141378m1bcd3baeed098e09@mail.gmail.com> <4974DD86.2090300@zytor.com> <20090119201115.GD31356@linux-os.sc.intel.com> <3aa654a40901191346i12cc736m40bebd422100a088@mail.gmail.com> <20090119215736.GE31356@linux-os.sc.intel.com> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="==_Exmh_1232422525_3870P"; micalg=pgp-sha1; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit Date: Mon, 19 Jan 2009 22:35:25 -0500 Message-ID: <85492.1232422525@turing-police.cc.vt.edu> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1270 Lines: 36 --==_Exmh_1232422525_3870P Content-Type: text/plain; charset=us-ascii On Mon, 19 Jan 2009 13:57:36 PST, Suresh Siddha said: > Though the bios is the culprit and this option will severely limit > the cpu capabilities that OS can take advantage of, OS should fallback > to a safer mode. I will have a patch for it. > > Also, I wonder, if we should complain/scream during boot if we find only > fewer cpuid levels on modern generation cpu's. I think a KERN_INFO "Core2 E9700 expected 6 cpuid levels, got 4" would possibly be a good idea. Might be a good idea to check what happens under VMWare and similar though, it looks like the type of thing a hypervisor is likely to do something odd to us... --==_Exmh_1232422525_3870P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Exmh version 2.5 07/13/2001 iD8DBQFJdUZ9cC3lWbTT17ARAgG5AKD8CaejNRq+QCAy1gtuGzyULF3bigCePeSp tjJy44vJ2Uso3zq5fEd/oUA= =8+34 -----END PGP SIGNATURE----- --==_Exmh_1232422525_3870P-- -- 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/