From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751605Ab2LSW7o (ORCPT ); Wed, 19 Dec 2012 17:59:44 -0500 Received: from terminus.zytor.com ([198.137.202.10]:47607 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751093Ab2LSW7i (ORCPT ); Wed, 19 Dec 2012 17:59:38 -0500 Message-ID: <50D246BB.9010800@zytor.com> Date: Wed, 19 Dec 2012 14:59:07 -0800 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/17.0 Thunderbird/17.0 MIME-Version: 1.0 To: Yinghai Lu CC: Jacob Shin , Borislav Petkov , "H. Peter Anvin" , "Yu, Fenghua" , "mingo@kernel.org" , "linux-kernel@vger.kernel.org" , "tglx@linutronix.de" , "linux-tip-commits@vger.kernel.org" , Konrad Rzeszutek Wilk , Stefano Stabellini Subject: Re: [tip:x86/microcode] x86/microcode_intel_early.c: Early update ucode on Intel's CPU References: <50CCCFD0.7030704@linux.intel.com> <50CCEE49.3080801@zytor.com> <50CCF6F6.4020107@zytor.com> <50CD04F1.8020902@zytor.com> <0dcbce7a-d2ae-44fa-9658-81590f71ec47@email.android.com> <20121219220504.GA32212@jshin-Toonie> <50D23EE8.7030904@zytor.com> In-Reply-To: X-Enigmail-Version: 1.4.6 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 12/19/2012 02:47 PM, Yinghai Lu wrote: > > on demand to only map 2M will help ? > or have to return to v6 version for-x86-boot ? > Why would 2M be inherently better than 1G? I realize it works for the *one particular system* that you have a specimen for, but that is not a sensible approach for architecture. The problem remains no matter how you slice it; we need a general solution. The fact that this system was ever built reflects a number of critical failures that should be surprising but sadly are not. -hpa