Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755611Ab0BDCCj (ORCPT ); Wed, 3 Feb 2010 21:02:39 -0500 Received: from mx1.redhat.com ([209.132.183.28]:2096 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753087Ab0BDCCi (ORCPT ); Wed, 3 Feb 2010 21:02:38 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit From: Roland McGrath To: "Lu, Hongjiu" X-Fcc: ~/Mail/linus Cc: "Siddha, Suresh B" , Oleg Nesterov , "H. Peter Anvin" , Ingo Molnar , Thomas Gleixner , LKML , "Lachner, Peter" Subject: RE: [patch] x86: ptrace and core-dump extensions for xstate In-Reply-To: Lu, Hongjiu's message of Wednesday, 3 February 2010 15:45:12 -0800 <8EA2C2C4116BF44AB370468FBF85A7770123AAB0AE@orsmsx504.amr.corp.intel.com> References: <1265076025.2802.194.camel@sbs-t61.sc.intel.com> <20100203230817.E6529AA@magilla.sf.frob.com> <8EA2C2C4116BF44AB370468FBF85A7770123AAB0AE@orsmsx504.amr.corp.intel.com> X-Shopping-List: (1) Extemporaneous rectum animals (2) Impotent advantageous cheater-hawks (3) Jellied travesty Message-Id: <20100204020224.45379725@magilla.sf.frob.com> Date: Wed, 3 Feb 2010 18:02:24 -0800 (PST) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 609 Lines: 15 > Gdb calls cpuid during startup time to find out the actual xstate_size > on the target machine. It has to be reliable. There is no need for > another ptrace option. But we should document it clearly in ABI. As I said, I think that is an extremely poor API choice. There is no such arcane requirement in the API now, so we do not have add one. Thanks, Roland -- 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/