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 [170.10.129.124]) by sourceware.org (Postfix) with ESMTPS id CBE5D3858D34 for ; Sun, 14 Apr 2024 06:31:53 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org CBE5D3858D34 Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=redhat.com ARC-Filter: OpenARC Filter v1.0.0 sourceware.org CBE5D3858D34 Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1713076315; cv=none; b=u9biW/J9MXIvTHf94p5MNHmKo7hAnrMQHxknW+vQwwd+psAMCDKW8JPGf3JdJlD7xH5Kb8a7QTTlIfIAvE18U/O3y1g4lv6Ozaly2Bga+DvgZiPwHivpn9zYDgNtN9Gw4WUHJ6JvniG5ob35Bp+xCQhfoTpfTc9bV2tPO/9K4UQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1713076315; c=relaxed/simple; bh=HO612gFkd9d7XdSr+6nU6REES2w26YEEYe+VOYQORyE=; h=DKIM-Signature:From:To:Subject:Date:Message-ID:MIME-Version; b=HLewmiePdHngAb0CMMeeQszcYY2HmJsdtpe/SpIX5BPILx1pfN9s+2qjvZbl6UgRh7x9znmJLG3WhMukYR3jyuW2tzgdPx/7yBijitIHmi3m8irkhiKaGUEnjh0MsTW9R7RlH3h4kgUnW7vhI1rYftV3+TD7esp7k0BUkQZMhhw= ARC-Authentication-Results: i=1; server2.sourceware.org DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1713076313; 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=mEMIwdicGA5xoKvvhD2Lgn9sfrZuYxc4jkgvudfe2I0=; b=O5odpNmVhNNNILvFvrR6y8g+P0SkGyXv6PAdLsU+ITq0fgU5+pU+P5i3oLuDXEL5Fxfazq i57JzjgDQeutmKT46aAeCaf/M2YX7W16h3mEN0m6tdgZ84Cq9QgOqDKTprv4+xZ0FK8Md3 nRkR5AV2x32pI6rkXJJzLiXm+V+IT5E= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-307-cAoiX--DMceBG7QQKOdxaQ-1; Sun, 14 Apr 2024 02:31:49 -0400 X-MC-Unique: cAoiX--DMceBG7QQKOdxaQ-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id D7958104456D; Sun, 14 Apr 2024 06:31:48 +0000 (UTC) Received: from oldenburg.str.redhat.com (unknown [10.39.192.5]) by smtp.corp.redhat.com (Postfix) with ESMTPS id CDB682166B31; Sun, 14 Apr 2024 06:31:47 +0000 (UTC) From: Florian Weimer To: "H.J. Lu" Cc: Libc-stable Mailing List , Sunil K Pandey Subject: Re: [2.39 Backport] x86_64: Exclude SSE, AVX and FMA4 variants in libm multiarch In-Reply-To: (H. J. Lu's message of "Sat, 13 Apr 2024 13:26:24 -0700") References: Date: Sun, 14 Apr 2024 08:31:41 +0200 Message-ID: <875xwk1mlu.fsf@oldenburg.str.redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.6 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain X-Spam-Status: No, score=-5.7 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H4,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,SPF_NONE,TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: * H. J. Lu: > Since > > commit befe2d3c4dec8be2cdd01a47132e47bdb7020922 > Author: H.J. Lu > Date: Wed Feb 28 09:51:14 2024 -0800 > > x86-64: Don't use SSE resolvers for ISA level 3 or above > > has been backported to 2.39 branch, I think we should also backport > > commit 9f78a7c1d0963282608da836b840f0d5ae1c478e > Author: Sunil K Pandey > Date: Tue Feb 13 12:23:14 2024 -0800 > > x86_64: Exclude SSE, AVX and FMA4 variants in libm multiarch > > When glibc is built with ISA level 3 or higher by default, the resulting > glibc binaries won't run on SSE or FMA4 processors. Exclude SSE, AVX and > FMA4 variants in libm multiarch when ISA level 3 or higher is enabled by > default. > > When glibc is built with ISA level 2 enabled by default, only keep SSE4.1 > variant. > > Fixes BZ 31335. No objections from me, we'd want to backport this downstream anyway. Thanks, Florian