From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 95764C04AB5 for ; Thu, 6 Jun 2019 14:20:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6CE3E20673 for ; Thu, 6 Jun 2019 14:20:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728837AbfFFOUz (ORCPT ); Thu, 6 Jun 2019 10:20:55 -0400 Received: from mout.kundenserver.de ([212.227.126.135]:38249 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727961AbfFFOUz (ORCPT ); Thu, 6 Jun 2019 10:20:55 -0400 Received: from [192.168.1.110] ([77.9.2.22]) by mrelayeu.kundenserver.de (mreue012 [212.227.15.167]) with ESMTPSA (Nemesis) id 1M91Tq-1hWAED47fi-006Aqa; Thu, 06 Jun 2019 16:20:48 +0200 Subject: Re: libata: sysctl knob for enabling tpm/opal at runtime To: Christoph Hellwig , "Enrico Weigelt, metux IT consult" Cc: linux-kernel@vger.kernel.org, axboe@kernel.dk, linux-ide@vger.kernel.org References: <1559734587-32596-1-git-send-email-info@metux.net> <20190605192320.GA16831@infradead.org> From: "Enrico Weigelt, metux IT consult" Organization: metux IT consult Message-ID: <3720d2a4-c8e8-0024-bc39-2aed5c4bf0a3@metux.net> Date: Thu, 6 Jun 2019 16:20:46 +0200 User-Agent: Mozilla/5.0 (X11; Linux i686 on x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.2.1 MIME-Version: 1.0 In-Reply-To: <20190605192320.GA16831@infradead.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Provags-ID: V03:K1:/GS942zi5O5i4vgVfWA015f/miYS7gLEV1AIVPzcAU0rhaL3Gvy 3aaSJnmYcCRviX1XlstBl/SpOrplHBMcTD+Xx4XmkVRyVPj5zLdQtFB9r3b4xtknjjUhvgU vyfjgtWyRbgzyMJIiYzxXkX2+7ucABLPGDI1t0wlFxUCb2nneTkM61L84cZOG8W6lGabz9e RkTbmz/AueP+cMvyLA2ag== X-UI-Out-Filterresults: notjunk:1;V03:K0:8bLMwidkVXw=:4ARllqipmzLaR77mg2XFIF 6m1TxPNtdM3N+Ot6a2TUfLcF4K2v4i7u+wrcAOSuHanbQTOIU88Oo6bVDIeEuP+N97oxtMLp2 hXhncvNPGVVOPSrPMfuMBWOOxOd2GPLDjR9Ww8uC1PA23pxDH7dopA25QvWDPl8NWCQGYnpjy HwlIQFV3t+kZFjR/wip/Q4Gk/eMeiGrdvfXs8bjaV9SLBgB8xUw9u2xg+x5H18ma3nEI/57+u sk13yt4t4cR0zY0C0Acv6hOcsgd3zN4q3uG/lxlbqBjqqzL131unLiqK6h5gyGZdZAqk99CJk WhhXV7y7hvJmfj2t9W+J6kp7UE86l1FDx2tZWsk0uHxGE/RQ3sg0aB88xTHPmn2Mn70Sak0G7 u1AlFoPqWPiMEXJ2JDCg10+/2gXrOif0Fx2cSQyw2ERH+1sckJTnOzWXriOliN/GEpsjieMvs aeNglV8DYMbj8BZQQTJ+l2emRf9ItgzPRwrLlncRR81TBDrUgwrhYcPlgnhToZ9ciSZBv8X6A qklgqqNtTHhczzYWGh86widWA1iAv9ZSGhkF4R8RW5/bGATwg6imBxFfi3kInEzWBTfjUi3cn fOmppP3DqPv3n14iwcgVZGKx38XKejzovXKHgjt5G1RaP24sMdGA2J+gxp9pOuU/z8Mio3dmk bX6uU+O1z/+3+yibVPJiQTwuF/7Ij2Dn85naQ/71zYIzD+y+aidFmcSyYviP1VV4IsRU5r/9E fqkxQOXhwvLrdBFNZQ8ZDa8LcDzLATog2ol9+6mhtsyzGLJV6RYPAZjQwVI= Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 05.06.19 21:23, Christoph Hellwig wrote: > On Wed, Jun 05, 2019 at 01:36:25PM +0200, Enrico Weigelt, metux IT consult wrote: >> Hello folks, >> >> >> here's a patchset that allows enabling libata's tpm features (opal) >> at runtime. Until now we need to boot with special kernel parameter, >> in order to use OPAL - this patch also adds a sysctl knob for that. > > Or you can use the block/sed-opal.c code which doesn't require the > tweak, and really is the proper way forward to use OPAL. You're referring to the OPAL ioctl()s ? hmm, it seems that sed-util doesn't use them at all, but directly sends raw ata commands. Shall I use a different userland tool ? --mtx -- Enrico Weigelt, metux IT consult Free software and Linux embedded engineering info@metux.net -- +49-151-27565287