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=-6.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 53191C11F69 for ; Thu, 1 Jul 2021 08:21:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 37E9B6148E for ; Thu, 1 Jul 2021 08:21:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234865AbhGAIYI (ORCPT ); Thu, 1 Jul 2021 04:24:08 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:60810 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234684AbhGAIYI (ORCPT ); Thu, 1 Jul 2021 04:24:08 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1625127697; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=WLKJhbgcvFuPJHaea6EMauv0v6hOekQR7bhLFOeZe5U=; b=WqVAJsCq9OGEmZZTAkJs9Iwcf36AOL9jZVChgw+BVkne78H4OYgbieTWjVAUSPJ8wAT67h HSNykf9r/CDvjLtLPghFHuzpP0wWEEyvw+0Cc/xwPvtq/yMGxCbDVRmTfPKmHygrdagsvz 5d5IAMOYnDHVW2FOmukdzIkG3Spxef0= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-467-0ePXuSitOUWZhHbHAYDBYg-1; Thu, 01 Jul 2021 04:21:34 -0400 X-MC-Unique: 0ePXuSitOUWZhHbHAYDBYg-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id C885D1922965; Thu, 1 Jul 2021 08:21:32 +0000 (UTC) Received: from oldenburg.str.redhat.com (ovpn-115-5.ams2.redhat.com [10.36.115.5]) by smtp.corp.redhat.com (Postfix) with ESMTPS id B708060C13; Thu, 1 Jul 2021 08:21:30 +0000 (UTC) From: Florian Weimer To: "Enrico Weigelt, metux IT consult" Cc: Thiago Macieira , hjl.tools@gmail.com, libc-alpha@sourceware.org, linux-api@vger.kernel.org, linux-arch@vger.kernel.org, x86@kernel.org Subject: Re: x86 CPU features detection for applications (and AMX) 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> Date: Thu, 01 Jul 2021 10:21:28 +0200 In-Reply-To: <4ba30cb7-6854-0691-fad6-4ca9ce674ac2@metux.net> (Enrico Weigelt's message of "Thu, 1 Jul 2021 10:08:04 +0200") Message-ID: <878s2qh2bb.fsf@oldenburg.str.redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Precedence: bulk List-ID: X-Mailing-List: linux-api@vger.kernel.org * 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. Thanks, Florian