Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753183AbaAQSXc (ORCPT ); Fri, 17 Jan 2014 13:23:32 -0500 Received: from mail.skyhub.de ([78.46.96.112]:39147 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752592AbaAQSXa (ORCPT ); Fri, 17 Jan 2014 13:23:30 -0500 Date: Fri, 17 Jan 2014 19:23:21 +0100 From: Borislav Petkov To: "H. Peter Anvin" Cc: Ren Qiaowei , Thomas Gleixner , Ingo Molnar , x86@kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 2/5] x86, mpx: hook #BR exception handler to allocate bound tables Message-ID: <20140117182321.GJ8715@pd.tnic> References: <20140112092019.GA3664@pd.tnic> <52D35ABB.8070904@intel.com> <20140113103808.GC5388@pd.tnic> <52D95AD4.6060603@zytor.com> <20140117164855.GF8715@pd.tnic> <52D95F93.3030000@zytor.com> <20140117165656.GA9024@pd.tnic> <52D96149.8070706@zytor.com> <20140117170410.GH8715@pd.tnic> <52D968C5.9080102@zytor.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <52D968C5.9080102@zytor.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jan 17, 2014 at 09:30:45AM -0800, H. Peter Anvin wrote: > Yes. It would take some serious effort to get BOUND or MPX > instructions into the kernel -- you'd have to put them in inline > assembly, and BOUND doesn't even exist in 64-bit mode. Which reminds me - we will have to explicitly turn off any compiler switches that utilize MPX insns so that they don't get issued when building the kernel. Provided there will be compiler support, that is. -- Regards/Gruss, Boris. Sent from a fat crate under my desk. Formatting is fine. -- -- 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/