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=-3.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED 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 E74A1C43461 for ; Mon, 7 Sep 2020 09:06:00 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 470F62145D for ; Mon, 7 Sep 2020 09:06:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="y/iwS32/" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 470F62145D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:40514 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kFD67-0007Ks-9r for qemu-devel@archiver.kernel.org; Mon, 07 Sep 2020 05:05:59 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59710) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kFD5Y-0006mC-VY for qemu-devel@nongnu.org; Mon, 07 Sep 2020 05:05:24 -0400 Received: from mail-wr1-x443.google.com ([2a00:1450:4864:20::443]:45023) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kFD5X-00018m-4N for qemu-devel@nongnu.org; Mon, 07 Sep 2020 05:05:24 -0400 Received: by mail-wr1-x443.google.com with SMTP id c15so14912741wrs.11 for ; Mon, 07 Sep 2020 02:05:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=references:user-agent:from:to:cc:subject:in-reply-to:date :message-id:mime-version:content-transfer-encoding; bh=0LtdfdwVNGUM4kMXLYeo8eZbTFSGOBCWmXRhP6es5pg=; b=y/iwS32/E0Sqam0qn6S6DhmJpGDtMEuq2RNPU9IfgqWbt0deXES6wwbLHfU7zXxVUH eZxWD4X/Y5sL62PpOvdqMF53NY9HWKKd+9sNhfjXN1/A326Nf6scwCSrVgv0rqs7CFBt SdxjJNg/+8zbxqcEyJepf4OUUFkHsRr/j1SbhBNTFVBPtkDw0L8C+ac06KO6Hx9qbpAu T7UmavVjFQnJLhuwxk5KkgRlVbD4EOPcrZtLSv1cmsSjINFjGZFLcpRih3chyr4whLxE DOLIgdAVySWKJMTIyX2CMKVoh2gl5MeQYfkkd/u0olyR5FPVcSVFzsiSfV/fRoez/Spx 5kbg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:references:user-agent:from:to:cc:subject :in-reply-to:date:message-id:mime-version:content-transfer-encoding; bh=0LtdfdwVNGUM4kMXLYeo8eZbTFSGOBCWmXRhP6es5pg=; b=kf2f1QdlisNDp3gWJKgngVaySVSHeIGTbfTt+FwpCCXZrE0ycLrrspVjc+UcqE7Q5y x5k9V6FQrq17rQh3f7Aogv+XroyS4ibd1pb3ORt7iWmOnaS2haaELSdnG/0zanpaMN8U vNOOV1tSpsmyO97dlcbiyk34BXA6ZIM4np7SxFJC8BuGQl3vb0NJYHzMe9dmLkv7P1sB F/i3FkoTp8WVllEaKoKiVp96Z5oDboyUCaxW2afN7iF7HtqFhQlqfLM/pi458c72bMWa /0icmpTwe/ThOJaTtELq/e1yhBkLBSonIXaE2MXtAjVDqjElWtmaUyao0rbmeavp0jkc 0FsQ== X-Gm-Message-State: AOAM530F4mlXsdntOEceqRjKv+jdItGZio+JzBtyfZ+qF3fwXZ7S1g9f z7rRoURSuGqLvxusXKltMVWTOw== X-Google-Smtp-Source: ABdhPJx8DE5V0k5nrKMJfUPI0yd7Opu6K7v9Ouzx8cZfwlkXI0j4zNyKRT46bvmlLk1rRYbseldsfw== X-Received: by 2002:adf:f78c:: with SMTP id q12mr20661236wrp.6.1599469521109; Mon, 07 Sep 2020 02:05:21 -0700 (PDT) Received: from zen.linaroharston ([51.148.130.216]) by smtp.gmail.com with ESMTPSA id h8sm27156374wrw.68.2020.09.07.02.05.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 07 Sep 2020 02:05:20 -0700 (PDT) Received: from zen (localhost [127.0.0.1]) by zen.linaroharston (Postfix) with ESMTP id 2D3441FF7E; Mon, 7 Sep 2020 10:05:19 +0100 (BST) References: <20200904165140.10962-1-alex.bennee@linaro.org> User-agent: mu4e 1.5.5; emacs 28.0.50 From: Alex =?utf-8?Q?Benn=C3=A9e?= To: Peter Maydell Subject: Re: [RFC PATCH] docs/system/deprecated: mark ppc64abi32-linux-user for deprecation In-reply-to: Date: Mon, 07 Sep 2020 10:05:18 +0100 Message-ID: <87d02yrm7l.fsf@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=2a00:1450:4864:20::443; envelope-from=alex.bennee@linaro.org; helo=mail-wr1-x443.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "reviewer:Incompatible changes" , David Gibson , QEMU Developers , Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Peter Maydell writes: > On Fri, 4 Sep 2020 at 17:52, Alex Benn=C3=A9e wr= ote: >> >> It's buggy and we are not sure anyone uses it. > >> +``ppc64abi32`` CPUs (since 5.2.0) >> +''''''''''''''''''''''''''''''''' >> + >> +The ``ppc64abi32`` architecture has a number of issues which regularly >> +trip up our CI testing and is suspected to be quite broken. >> +Furthermore the maintainers are unsure what the correct behaviour >> +should be and strongly suspect no one actually uses it. > > IRC discussion suggests we do know what the correct behaviour > is -- it should be "what the compat32 interface of a 64-bit > PPC kernel gives you", it's just that the code doesn't do that > (and never has?). It's like the mipsn32, mipsn32el, sparc32plus > ABIs which we also implement (hopefully correctly...) > > But "this has always been broken and nobody complained" is > a good reason to deprecate anyway. What about tweaking configure? Or should I just manually squash it in all our CI configs? --=20 Alex Benn=C3=A9e