From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by sourceware.org (Postfix) with ESMTP id 458EA398B406 for ; Fri, 9 Apr 2021 08:35:47 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 458EA398B406 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-254-2gXuXjxNObye6BH7SgRKJw-1; Fri, 09 Apr 2021 04:35:45 -0400 X-MC-Unique: 2gXuXjxNObye6BH7SgRKJw-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 4CD8787A83A; Fri, 9 Apr 2021 08:35:44 +0000 (UTC) Received: from oldenburg.str.redhat.com (ovpn-112-70.ams2.redhat.com [10.36.112.70]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 7507818AAB; Fri, 9 Apr 2021 08:35:43 +0000 (UTC) From: Florian Weimer To: Stefan Liebler Cc: libc-alpha@sourceware.org Subject: Re: s390x: Diagnose missing VXE at run time if required at build time References: <87k0pfmmpy.fsf@oldenburg.str.redhat.com> <294a9d07-64bc-7db7-6cd9-1fe4fdbfc1f9@linux.ibm.com> <87eefk3ibd.fsf@oldenburg.str.redhat.com> Date: Fri, 09 Apr 2021 10:35:52 +0200 In-Reply-To: <87eefk3ibd.fsf@oldenburg.str.redhat.com> (Florian Weimer's message of "Thu, 08 Apr 2021 17:30:14 +0200") Message-ID: <87fszzzwgn.fsf@oldenburg.str.redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain X-Spam-Status: No, score=-6.4 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H4, RCVD_IN_MSPIKE_WL, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 09 Apr 2021 08:35:49 -0000 * Florian Weimer: > * Stefan Liebler: > >> I've just had a quick look to dl_platform_init for other architectures >> to check if there are similar checks. But I haven't found those there. >> Are there similar checks for other architectures at a different place? > > There is a check in sysdeps/x86/dl-prop.h, but that's different because > it looks at ELF data, not build flags. I should have mentioned that the placement isn't arbitrary: This is a target hook that runs right after dl_hwcap has been extracted from the auxiliary vector. Thanks, Florian