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=-5.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 3FAB4C11F67 for ; Thu, 1 Jul 2021 11:59:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1EB0661492 for ; Thu, 1 Jul 2021 11:59:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236192AbhGAMCO (ORCPT ); Thu, 1 Jul 2021 08:02:14 -0400 Received: from mout.kundenserver.de ([212.227.126.187]:41773 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236364AbhGAMCO (ORCPT ); Thu, 1 Jul 2021 08:02:14 -0400 Received: from [192.168.1.155] ([95.117.176.189]) by mrelayeu.kundenserver.de (mreue009 [212.227.15.167]) with ESMTPSA (Nemesis) id 1M9Frj-1lti9x12jn-006R94; Thu, 01 Jul 2021 13:59:34 +0200 Subject: Re: x86 CPU features detection for applications (and AMX) To: Florian Weimer Cc: Thiago Macieira , hjl.tools@gmail.com, libc-alpha@sourceware.org, linux-api@vger.kernel.org, linux-arch@vger.kernel.org, x86@kernel.org References: <22261946.eFiGugXE7Z@tjmaciei-mobl1> <3c5c29e2-1b52-3576-eda2-018fb1e58ff9@metux.net> <2379132.fg5cGID6mU@tjmaciei-mobl1> <87pmw3ifpv.fsf@oldenburg.str.redhat.com> <030f1462-2bf9-39bc-d620-6d9fbe454a27@metux.net> <87lf6ricqg.fsf@oldenburg.str.redhat.com> <4ba30cb7-6854-0691-fad6-4ca9ce674ac2@metux.net> <878s2qh2bb.fsf@oldenburg.str.redhat.com> From: "Enrico Weigelt, metux IT consult" Message-ID: <034dcf9b-1f8c-23ee-86a6-791122bc0f8c@metux.net> Date: Thu, 1 Jul 2021 13:59:33 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <878s2qh2bb.fsf@oldenburg.str.redhat.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: tl Content-Transfer-Encoding: 8bit X-Provags-ID: V03:K1:yrIhHVBkyeQUmrUAbNBdH57c14ndQpRwW0g3SJYcM7nPaEhvs+9 wKa0zGh20qrmugmIuA4P9vJCeA2XSW5HhAI2sxloXcThdYd6ltSBt1yK0JIzhqIBOZL4Xf3 FSLB3gDXr5JMyEWsoswFTvjniNKBDDtah0wicV6K09Wixg1E4GDwD6H/R6ZsXLWTQRDcOw8 L02pRUeImwD7gOD+9kTaQ== X-UI-Out-Filterresults: notjunk:1;V03:K0:GOa+F/xu6gc=:kTj0e2FFcmC0xavUgUvh9D 08y2L85aPpsUvlhoa+PeCQUt/olDwNbhroJWHyVnRsQy2hff+paqpfMMX3xlXU4a+3w3vPQdu 9RLs9GVVxuSXwZVya+da2bYnEocHQGoeGCqQoIWuuTRZfL9AG68BGPTf6L6riM6IIe7+1iX1W cSYH3LJu7pv4yw9WgNiOyEQD+Tmgp6UIEVMLahuEFnx3mUCu4TAXvb7Yku2nTE8Pnjix+YbYb GfHD0fQgijzyYkN7MDefH/Q1Z/e0UaxQK9+d7yjeUZr2OwWF605OAxGeyT4RrpSm05LF/e7Gb ZblmAR8RkEWP/B2khU9shfCwyH3legBzSwo8r1BW4GDxHFYSyrpWvHBD5jmTjkrPzJ4flmeD/ CSS0AujMi9Sd/EHpV+dDJM6s+4oJxEJfous0tcqJTLPVShadnhqpoJ3iP8RqcMQhOzlFfs6NB VgeczPBa0h7DPc6iX7YuQuoGjTPj9xetpGGfswaRl1cik+CHoBVSQFPYVdVVXPXmb81xsbc/n q2g+pmghpQxsfP9K5BnQBJqqjmGxy3kq5U+7FZQS6Irp/QyQPZv4eUOBPEalNWZYteNQXaLuv jvlRRM6+1XY9gmaP1DZEC0VnLCm3yh8t40JN0sbJbeMM+nVUXDHjmxk27yOC9CygmmMVTP48k QYwG0WM1zsjPqnFpB+QxRAlFg3pg39y5dQ2RXqL5MRiAyzgVFd1dW68HhBCMjR3PyOs2AZD+I ab2G2tho4ZISseNFDkt2OnpEwaKyshamDoJnVYNKoc8qPZrI0c5qzo9cKKRtFvDUV4RSHu9MU lIDOHOV1OvMsFTfZazr2Wg1tQzMPZLKeEk7wBZEa22FNv7MVRRfdPNteObO5W1zVhNmF3BJ Precedence: bulk List-ID: X-Mailing-List: linux-api@vger.kernel.org On 01.07.21 10:21, Florian Weimer wrote: > * Enrico Weigelt: > >> And I'm repeating my previous questions: can you name some actual real >> world (not hypothetical or academical) scenarios where: >> >> somebody really needs some binary-only application && >> needs those extra modules *into that* application && >> cannot recompile these modules into the applications's prefix && >> needs AMX in that application && >> cannot just use chroot && >> cannot put it into container ? > > There are no real-world scenarios yet which involve AMX, so I'm not sure > what you are after with this question. Okay, let's take AMX out of the equation (until it actually arrives in the field). How does it look like then ? --mtx -- --- Hinweis: unverschlüsselte E-Mails können leicht abgehört und manipuliert werden ! Für eine vertrauliche Kommunikation senden Sie bitte ihren GPG/PGP-Schlüssel zu. --- Enrico Weigelt, metux IT consult Free software and Linux embedded engineering info@metux.net -- +49-151-27565287