From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759176Ab2AFUmj (ORCPT ); Fri, 6 Jan 2012 15:42:39 -0500 Received: from lennier.cc.vt.edu ([198.82.162.213]:47260 "EHLO lennier.cc.vt.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759166Ab2AFUmi (ORCPT ); Fri, 6 Jan 2012 15:42:38 -0500 X-Mailer: exmh version 2.7.2 01/07/2005 with nmh-1.3-dev To: Jan Beulich Cc: mingo@elte.hu, tglx@linutronix.de, hpa@zytor.com, Andi Kleen , linux-kernel@vger.kernel.org Subject: Re: x86-64: memset()/memcpy() not fully standards compliant In-Reply-To: Your message of "Thu, 05 Jan 2012 14:04:30 GMT." <4F05BBFE020000780006A983@nat28.tlf.novell.com> From: Valdis.Kletnieks@vt.edu References: <4F05BBFE020000780006A983@nat28.tlf.novell.com> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="==_Exmh_1325882419_3358P"; micalg=pgp-sha1; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit Date: Fri, 06 Jan 2012 15:40:19 -0500 Message-ID: <73464.1325882419@turing-police.cc.vt.edu> X-Mirapoint-Received-SPF: 198.82.161.152 auth3.smtp.vt.edu Valdis.Kletnieks@vt.edu 2 pass X-Junkmail-Status: score=10/50, host=dagger.cc.vt.edu X-Junkmail-Signature-Raw: score=unknown, refid=str=0001.0A020208.4F075C39.0012,ss=1,re=0.000,fgs=0, ip=0.0.0.0, so=2011-07-25 19:15:43, dmn=2011-05-27 18:58:46, mode=single engine X-Junkmail-IWF: false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --==_Exmh_1325882419_3358P Content-Type: text/plain; charset=us-ascii On Thu, 05 Jan 2012 14:04:30 GMT, Jan Beulich said: > Forever these two functions have been limited to deal with at most 4G > at a time. While I cannot point out an in-tree user that would require > larger sizes, it is now the second time that within our Xen kernel we got > bitten by that limitation. Wow. Second time? What the heck is the Xen kernel *doing* that it's trying to do over 4G in a single memset/memcpy? --==_Exmh_1325882419_3358P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Exmh version 2.5 07/13/2001 iD8DBQFPB1wzcC3lWbTT17ARAm+UAJ9GQJ0ceZku5tRPaVvpdzm868jlAACg0bRm qSN5cBkWQwEi8Q907Byhn+Q= =U3eQ -----END PGP SIGNATURE----- --==_Exmh_1325882419_3358P--