Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755146Ab2BUTaU (ORCPT ); Tue, 21 Feb 2012 14:30:20 -0500 Received: from terminus.zytor.com ([198.137.202.10]:45013 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752472Ab2BUTaT (ORCPT ); Tue, 21 Feb 2012 14:30:19 -0500 Message-ID: <4F43F0C0.5050104@zytor.com> Date: Tue, 21 Feb 2012 11:30:08 -0800 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0) Gecko/20120131 Thunderbird/10.0 MIME-Version: 1.0 To: Andy Lutomirski CC: "H. Peter Anvin" , x86@kernel.org, linux-kernel@vger.kernel.org Subject: Re: Do the x86 kernel entry points need an xabort on TSX cpus? References: <4F35517F.9070904@linux.intel.com> In-Reply-To: X-Enigmail-Version: 1.3.5 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 Content-Length: 697 Lines: 19 On 02/10/2012 09:24 AM, Andy Lutomirski wrote: > > Is that architecturally guaranteed? (My manual suggests that it's > specifically *not* guaranteed, which is surprising.) > I asked internally for a statement, and got the following: "Intel does not expect operating systems to require XABORT at the entry points. Intel takes system security extremely seriously and that any functionality added is scrutinized for security implications." -hpa -- 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/