Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753131AbcCGSM0 (ORCPT ); Mon, 7 Mar 2016 13:12:26 -0500 Received: from mga11.intel.com ([192.55.52.93]:39287 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752248AbcCGSMQ (ORCPT ); Mon, 7 Mar 2016 13:12:16 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.22,552,1449561600"; d="scan'208";a="904099639" Subject: Re: [PATCH v2] sparc64: Add support for Application Data Integrity (ADI) To: Andy Lutomirski References: <1456951177-23579-1-git-send-email-khalid.aziz@oracle.com> <20160305.230702.1325379875282120281.davem@davemloft.net> <56DD9949.1000106@oracle.com> <56DD9E94.70201@oracle.com> <56DDA6FD.4040404@oracle.com> <56DDBE68.6080709@linux.intel.com> Cc: Khalid Aziz , Rob Gardner , David Miller , Jonathan Corbet , Andrew Morton , dingel@linux.vnet.ibm.com, zhenzhang.zhang@huawei.com, bob.picco@oracle.com, "Kirill A. Shutemov" , "Aneesh Kumar K.V" , Andrea Arcangeli , Arnd Bergmann , sparclinux@vger.kernel.org, Michal Hocko , chris.hyser@oracle.com, Richard Weinberger , Vlastimil Babka , Konstantin Khlebnikov , Oleg Nesterov , Greg Thelen , Jan Kara , xiexiuqi@huawei.com, Vineet.Gupta1@synopsys.com, Andrew Lutomirski , "Eric W. Biederman" , bsegall@google.com, Geert Uytterhoeven , Davidlohr Bueso , Alexey Dobriyan , "linux-doc@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-mm@kvack.org" , linux-arch , Linux API From: Dave Hansen Message-ID: <56DDC47C.8010206@linux.intel.com> Date: Mon, 7 Mar 2016 10:12:12 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.5.1 MIME-Version: 1.0 In-Reply-To: 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: 346 Lines: 7 On 03/07/2016 09:53 AM, Andy Lutomirski wrote: > Also, what am I missing? Tying these tags to the physical page seems > like a poor design to me. This seems really awkward to use. Yeah, can you describe the structures that store these things? Surely the hardware has some kind of lookup tables for them and stores them in memory _somewhere_.