From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756251Ab2KVTE4 (ORCPT ); Thu, 22 Nov 2012 14:04:56 -0500 Received: from out02.mta.xmission.com ([166.70.13.232]:34082 "EHLO out02.mta.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756205Ab2KVTEs (ORCPT ); Thu, 22 Nov 2012 14:04:48 -0500 From: ebiederm@xmission.com (Eric W. Biederman) To: "H. Peter Anvin" Cc: Yinghai Lu , Thomas Gleixner , Ingo Molnar , linux-kernel@vger.kernel.org, Matt Fleming References: <1353482170-10160-1-git-send-email-yinghai@kernel.org> <1353482170-10160-2-git-send-email-yinghai@kernel.org> <50AD0E22.3020807@zytor.com> <50AD307C.6060008@zytor.com> <87d2z6jigs.fsf@xmission.com> <3178cb29-0e9e-44d2-b21f-45c53f38980a@email.android.com> Date: Thu, 22 Nov 2012 03:27:58 -0800 In-Reply-To: <3178cb29-0e9e-44d2-b21f-45c53f38980a@email.android.com> (H. Peter Anvin's message of "Wed, 21 Nov 2012 21:59:49 -0800") Message-ID: <874nkh3mip.fsf@xmission.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-XM-AID: U2FsdGVkX1+2EIFKrKF4vrdIRN8jwBj5dZotCpLusfc= X-SA-Exim-Connect-IP: 75.135.205.0 X-SA-Exim-Mail-From: ebiederm@xmission.com X-Spam-Report: * -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP * 0.0 TVD_RCVD_IP TVD_RCVD_IP * 0.1 XMSubLong Long Subject * 0.0 T_TM2_M_HEADER_IN_MSG BODY: T_TM2_M_HEADER_IN_MSG * -3.0 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] * -0.0 DCC_CHECK_NEGATIVE Not listed in DCC * [sa05 1397; Body=1 Fuz1=1 Fuz2=1] * 0.0 T_TooManySym_01 4+ unique symbols in subject * 0.0 T_TooManySym_03 6+ unique symbols in subject * 0.0 T_TooManySym_02 5+ unique symbols in subject X-Spam-DCC: XMission; sa05 1397; Body=1 Fuz1=1 Fuz2=1 X-Spam-Combo: ;"H. Peter Anvin" X-Spam-Relay-Country: Subject: Re: [PATCH v3 01/12] x86, boot: move verify_cpu.S after 0x200 X-SA-Exim-Version: 4.2.1 (built Sun, 08 Jan 2012 03:05:19 +0000) X-SA-Exim-Scanned: Yes (on in02.mta.xmission.com) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org "H. Peter Anvin" writes: > Quite certain something depends on it. It would not surprise me at all that there is a dependency, if we have not had a better way to report the 64bit entry point. I just wanted to make the context clear as that was confused in the discussion. Note that having a 32bit entry point at offset 0 is as much of an ABI. I am surprised that there are legitimate reasons to bulk up the 32bit entry point code before the 0x200. Everything that we are doing at that point is architectural. Eric