From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) by sourceware.org (Postfix) with ESMTP id 0F48F3851C3B; Thu, 4 Jun 2020 17:21:25 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 0F48F3851C3B Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=kernel.crashing.org Authentication-Results: sourceware.org; spf=fail smtp.mailfrom=segher@kernel.crashing.org Received: from gate.crashing.org (localhost.localdomain [127.0.0.1]) by gate.crashing.org (8.14.1/8.14.1) with ESMTP id 054HKsNM030263; Thu, 4 Jun 2020 12:20:54 -0500 Received: (from segher@localhost) by gate.crashing.org (8.14.1/8.14.1/Submit) id 054HKrBq030262; Thu, 4 Jun 2020 12:20:53 -0500 X-Authentication-Warning: gate.crashing.org: segher set sender to segher@kernel.crashing.org using -f Date: Thu, 4 Jun 2020 12:20:53 -0500 From: Segher Boessenkool To: Michal =?iso-8859-1?Q?Such=E1nek?= Cc: Daniel Kolesa , libc-alpha@sourceware.org, eery@paperfox.es, musl@lists.openwall.com, Will Springer , Palmer Dabbelt via binutils , via libc-dev , linuxppc-dev@lists.ozlabs.org, Joseph Myers Subject: Re: ppc64le and 32-bit LE userland compatibility Message-ID: <20200604172053.GH31009@gate.crashing.org> References: <2047231.C4sosBPzcN@sheen> <20200602142337.GS25173@kitsune.suse.cz> <3aeb6dfe-ae23-42f9-ac23-16be6b54a850@www.fastmail.com> <20200602152724.GU25173@kitsune.suse.cz> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20200602152724.GU25173@kitsune.suse.cz> User-Agent: Mutt/1.4.2.3i X-Spam-Status: No, score=-11.8 required=5.0 tests=BAYES_00, JMQ_SPF_NEUTRAL, KAM_DMARC_STATUS, RCVD_IN_DNSWL_NONE, TXREP, T_SPF_HELO_PERMERROR, T_SPF_PERMERROR autolearn=no autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: binutils@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Binutils mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 04 Jun 2020 17:21:26 -0000 On Tue, Jun 02, 2020 at 05:27:24PM +0200, Michal Suchánek wrote: > Naturally on POWER the first cpu that has LE support is POWER8 so you > can count on all other POWER8 features to be present. This is not true. The oldest CPU the ELFv2 ABI (and so, powerpc64le-linux) supports is POWER8, but most 6xx/7xx CPUs had a working LE mode already. There are very old ABIs that support LE as well. Segher