Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755205Ab1ECUvK (ORCPT ); Tue, 3 May 2011 16:51:10 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:39351 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755150Ab1ECUvI (ORCPT ); Tue, 3 May 2011 16:51:08 -0400 Date: Tue, 3 May 2011 22:50:51 +0200 From: Ingo Molnar To: "H. Peter Anvin" Cc: Linus Torvalds , werner , Thomas Gleixner , Linux Kernel Mailing List Subject: Re: 2.6.39-rc5-git2 boot crashs Message-ID: <20110503205051.GA28647@elte.hu> References: <20110503190822.GA20520@elte.hu> <4DC06386.8090206@zytor.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4DC06386.8090206@zytor.com> User-Agent: Mutt/1.5.20 (2009-08-17) X-ELTE-SpamScore: -2.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.3.1 -2.0 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1075 Lines: 33 * H. Peter Anvin wrote: > On 05/03/2011 01:17 PM, Linus Torvalds wrote: > > > > That said, I don't really see why ELAN would be so special. > > > > ELAN used to have a nonstandard A20 enabling sequence, until someone > found out that changes to the mainline sequence had made ELAN work as a > side effect. > > At this point, it's just a CPU selection thing, so it makes very little > sense. the ELAN .config option influences the following details: - sets X86_L1_CACHE_SHIFT to 4 (16 bytes) instead of the typical 6 (64 bytes) - sets X86_ALIGNMENT_16 - sets the -march=i486 compiler flag So in terms of the kernel image it seems to be mostly equivalent to selecting i486 from the CPU menu - except the X86_ALIGNMENT_16 detail (which does not seem to do anything substantive, AFAICS). Thanks, Ingo -- 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/