From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755325AbaD2AQR (ORCPT ); Mon, 28 Apr 2014 20:16:17 -0400 Received: from terminus.zytor.com ([198.137.202.10]:53322 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751925AbaD2AQQ (ORCPT ); Mon, 28 Apr 2014 20:16:16 -0400 Message-ID: <535EEF10.1080602@zytor.com> Date: Mon, 28 Apr 2014 17:15:12 -0700 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.4.0 MIME-Version: 1.0 To: Andrew Lutomirski , "H. Peter Anvin" CC: comex , Linux Kernel Mailing List , Linus Torvalds , Ingo Molnar , Alexander van Heukelum , Konrad Rzeszutek Wilk , Boris Ostrovsky , Borislav Petkov , Arjan van de Ven , Brian Gerst , Alexandre Julliard , Andi Kleen , Thomas Gleixner Subject: Re: [PATCH] x86-64: espfix for 64-bit mode *PROTOTYPE* References: <1398120472-6190-1-git-send-email-hpa@linux.intel.com> <535EDEC5.7030209@zytor.com> <535EDF67.3090501@linux.intel.com> In-Reply-To: X-Enigmail-Version: 1.6 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 04/28/2014 05:02 PM, Andrew Lutomirski wrote: > > I'm compiling your branch. In the mean time, two possibly stupid questions: > > What's the assembly code in the double-fault entry for? > It was easier for me to add it there than adding all the glue (prototypes and so on) to put it into C code... can convert it to C when it works. > Have you tried hbreak in qemu? I've had better luck with hbreak than > regular break in the past. Yes, no real change. -hpa