From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 12483 invoked by alias); 25 Sep 2013 16:59:16 -0000 Mailing-List: contact libc-ports-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: libc-ports-owner@sourceware.org Received: (qmail 12471 invoked by uid 89); 25 Sep 2013 16:59:16 -0000 Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Wed, 25 Sep 2013 16:59:16 +0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-4.4 required=5.0 tests=AWL,BAYES_00,RP_MATCHES_RCVD autolearn=ham version=3.3.2 X-HELO: mx1.redhat.com Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id r8PGxDmc012337 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Wed, 25 Sep 2013 12:59:13 -0400 Received: from zebedee.pink (ovpn-113-58.phx2.redhat.com [10.3.113.58]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id r8PGxBUo026495; Wed, 25 Sep 2013 12:59:12 -0400 Message-ID: <5243165F.804@redhat.com> Date: Wed, 25 Sep 2013 16:59:00 -0000 From: Andrew Haley User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130625 Thunderbird/17.0.7 MIME-Version: 1.0 To: Will Newton CC: "Carlos O'Donell" , "libc-ports@sourceware.org" , Patch Tracking Subject: Re: [PATCH] ARM: Add pointer guard support. References: <5242A79D.1030709@linaro.org> <52430AA4.70703@redhat.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-IsSubscribed: yes X-SW-Source: 2013-09/txt/msg00136.txt.bz2 On 09/25/2013 05:23 PM, Will Newton wrote: > From a back of the envelope calculation the cost of accessing TLS is > one cycle faster than accessing a global in best case (e.g. > Cortex-A15) Why is TLS so fast on Cortex-A15? Andrew.