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=-11.1 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, NICE_REPLY_A,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham 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 B70B6C433E2 for ; Tue, 15 Sep 2020 15:37:35 +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 28364206B2 for ; Tue, 15 Sep 2020 15:37:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="gm5joaHM" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 28364206B2 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:42084 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kID1R-0003B0-Te for qemu-devel@archiver.kernel.org; Tue, 15 Sep 2020 11:37:33 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:48246) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kID0h-0002Jc-58 for qemu-devel@nongnu.org; Tue, 15 Sep 2020 11:36:47 -0400 Received: from us-smtp-delivery-1.mimecast.com ([207.211.31.120]:23144 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kID0f-0004IA-4w for qemu-devel@nongnu.org; Tue, 15 Sep 2020 11:36:46 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1600184204; 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: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:autocrypt:autocrypt; bh=saQfClsBHSI3Dm4A06zPAKhihmkN6sWCtXHqGXJ/hOQ=; b=gm5joaHMMmEpYqWzaN1h7u84g1groPCx5S8/oew+0RIAKZa8Csl8hl+wJSZNQsxs7abJDh RpfYnNdjQkZnhCjrbGCicY/xwTbnkP1TNcbmeTcV+Zo4RI9GF87E+3guyMYVfJ3JAZwlij aRBYA9MwUh4HM8a6wyiWK4uNMB0Vaq8= Received: from mail-wm1-f69.google.com (mail-wm1-f69.google.com [209.85.128.69]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-589--CoWYDKwNO291Yc5EQx6Mw-1; Tue, 15 Sep 2020 11:36:42 -0400 X-MC-Unique: -CoWYDKwNO291Yc5EQx6Mw-1 Received: by mail-wm1-f69.google.com with SMTP id c200so1034956wmd.5 for ; Tue, 15 Sep 2020 08:36:42 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:autocrypt :message-id:date:user-agent:mime-version:in-reply-to :content-language:content-transfer-encoding; bh=saQfClsBHSI3Dm4A06zPAKhihmkN6sWCtXHqGXJ/hOQ=; b=PHtmP4i72C36ibdw7cVN7hg4TEGdnHhR3PIP/h1gaozg0QATxc2q2FWhY+gE4IkeI1 wZDf9idjc8RnPKCqpLvB2LvuEuBuJKs2EgAm9xC3jgZOB+ejlKOiAi8pr8Jpj8U6oVZv 4sjMZy1KofQSByZiuv6qT7WL0FkifA0LblSwSEpDd0WL9xqobS07BLknPJVTdOJk5ENT fvBx24gspKYJk8DGw+cpwczV23K8T7VXG/ywpbs22+eWwdGLNiFRzmjy04G4OlIhzUDX 38vQZ4O+PAaS9zdZ0lY/H4DJRETBGoO4I0OrKsyqKX7yt/kwiAqbG0aVqFepz5YdHqke cB4w== X-Gm-Message-State: AOAM530F8rY8obOnnt5ektHLdoH1kGTNP3m5CdPGaXuafWApI1GJFv+0 g8k+o34XwGqQsYoA3dOVKJxeV5pieLBQ1O5cUY8xZC5jrfG7O5nSK+v8lt1yllDN09M9VT13m/I jOmp+EyGbcjT8RtY= X-Received: by 2002:a5d:5042:: with SMTP id h2mr22449160wrt.409.1600184201062; Tue, 15 Sep 2020 08:36:41 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwz7PMCUiqrIDTT3J7QUtGhas3cib3bEXTeKl0XCkCn8PWq361WKlQLRLBOZsdrhmx5HsdDbA== X-Received: by 2002:a5d:5042:: with SMTP id h2mr22449135wrt.409.1600184200804; Tue, 15 Sep 2020 08:36:40 -0700 (PDT) Received: from [192.168.1.36] (65.red-83-57-170.dynamicip.rima-tde.net. [83.57.170.65]) by smtp.gmail.com with ESMTPSA id b194sm27071407wmd.42.2020.09.15.08.36.39 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 15 Sep 2020 08:36:40 -0700 (PDT) Subject: Re: [PATCH v2] docs/system: clarify deprecation schedule To: Stefan Hajnoczi , qemu-devel@nongnu.org References: <20200915150734.711426-1-stefanha@redhat.com> From: =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= Autocrypt: addr=philmd@redhat.com; keydata= mQINBDXML8YBEADXCtUkDBKQvNsQA7sDpw6YLE/1tKHwm24A1au9Hfy/OFmkpzo+MD+dYc+7 bvnqWAeGweq2SDq8zbzFZ1gJBd6+e5v1a/UrTxvwBk51yEkadrpRbi+r2bDpTJwXc/uEtYAB GvsTZMtiQVA4kRID1KCdgLa3zztPLCj5H1VZhqZsiGvXa/nMIlhvacRXdbgllPPJ72cLUkXf z1Zu4AkEKpccZaJspmLWGSzGu6UTZ7UfVeR2Hcc2KI9oZB1qthmZ1+PZyGZ/Dy+z+zklC0xl XIpQPmnfy9+/1hj1LzJ+pe3HzEodtlVA+rdttSvA6nmHKIt8Ul6b/h1DFTmUT1lN1WbAGxmg CH1O26cz5nTrzdjoqC/b8PpZiT0kO5MKKgiu5S4PRIxW2+RA4H9nq7nztNZ1Y39bDpzwE5Sp bDHzd5owmLxMLZAINtCtQuRbSOcMjZlg4zohA9TQP9krGIk+qTR+H4CV22sWldSkVtsoTaA2 qNeSJhfHQY0TyQvFbqRsSNIe2gTDzzEQ8itsmdHHE/yzhcCVvlUzXhAT6pIN0OT+cdsTTfif MIcDboys92auTuJ7U+4jWF1+WUaJ8gDL69ThAsu7mGDBbm80P3vvUZ4fQM14NkxOnuGRrJxO qjWNJ2ZUxgyHAh5TCxMLKWZoL5hpnvx3dF3Ti9HW2dsUUWICSQARAQABtDJQaGlsaXBwZSBN YXRoaWV1LURhdWTDqSAoUGhpbCkgPHBoaWxtZEByZWRoYXQuY29tPokCVQQTAQgAPwIbDwYL CQgHAwIGFQgCCQoLBBYCAwECHgECF4AWIQSJweePYB7obIZ0lcuio/1u3q3A3gUCXsfWwAUJ KtymWgAKCRCio/1u3q3A3ircD/9Vjh3aFNJ3uF3hddeoFg1H038wZr/xi8/rX27M1Vj2j9VH 0B8Olp4KUQw/hyO6kUxqkoojmzRpmzvlpZ0cUiZJo2bQIWnvScyHxFCv33kHe+YEIqoJlaQc JfKYlbCoubz+02E2A6bFD9+BvCY0LBbEj5POwyKGiDMjHKCGuzSuDRbCn0Mz4kCa7nFMF5Jv piC+JemRdiBd6102ThqgIsyGEBXuf1sy0QIVyXgaqr9O2b/0VoXpQId7yY7OJuYYxs7kQoXI 6WzSMpmuXGkmfxOgbc/L6YbzB0JOriX0iRClxu4dEUg8Bs2pNnr6huY2Ft+qb41RzCJvvMyu gS32LfN0bTZ6Qm2A8ayMtUQgnwZDSO23OKgQWZVglGliY3ezHZ6lVwC24Vjkmq/2yBSLakZE 6DZUjZzCW1nvtRK05ebyK6tofRsx8xB8pL/kcBb9nCuh70aLR+5cmE41X4O+MVJbwfP5s/RW 9BFSL3qgXuXso/3XuWTQjJJGgKhB6xXjMmb1J4q/h5IuVV4juv1Fem9sfmyrh+Wi5V1IzKI7 RPJ3KVb937eBgSENk53P0gUorwzUcO+ASEo3Z1cBKkJSPigDbeEjVfXQMzNt0oDRzpQqH2vp apo2jHnidWt8BsckuWZpxcZ9+/9obQ55DyVQHGiTN39hkETy3Emdnz1JVHTU0Q== Message-ID: <886e82e6-2015-9939-4bb6-dc93ec58c2fb@redhat.com> Date: Tue, 15 Sep 2020 17:36:39 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.11.0 MIME-Version: 1.0 In-Reply-To: <20200915150734.711426-1-stefanha@redhat.com> Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=philmd@redhat.com X-Mimecast-Spam-Score: 0.002 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Content-Language: en-US Received-SPF: pass client-ip=207.211.31.120; envelope-from=philmd@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/15 02:29:39 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -50 X-Spam_score: -5.1 X-Spam_bar: ----- X-Spam_report: (-5.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-2.999, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, 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: libvir-list@redhat.com, Peter Maydell , Daniel Berrange Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 9/15/20 5:07 PM, Stefan Hajnoczi wrote: > The sentence explaining the deprecation schedule is ambiguous. Make it > clear that a feature deprecated in the Nth release is guaranteed to > remain available in the N+1th release. Removal can occur in the N+2nd > release or later. > > As an example of this in action, see commit > 25956af3fe5dd0385ad8017bc768a6afe41e2a74 ("block: Finish deprecation of > 'qemu-img convert -n -o'"). The feature was deprecated in QEMU 4.2.0. It > was present in the 5.0.0 release and removed in the 5.1.0 release. > > Suggested-by: Daniel P. Berrangé > Signed-off-by: Stefan Hajnoczi Reviewed-by: Philippe Mathieu-Daudé > --- > v2: > * Use Dan's suggested wording [Daniel Berrange] > --- > docs/system/deprecated.rst | 9 +++++---- > 1 file changed, 5 insertions(+), 4 deletions(-) > > diff --git a/docs/system/deprecated.rst b/docs/system/deprecated.rst > index 0cb8b01424..f2d5bd8ce1 100644 > --- a/docs/system/deprecated.rst > +++ b/docs/system/deprecated.rst > @@ -3,10 +3,11 @@ Deprecated features > > In general features are intended to be supported indefinitely once > introduced into QEMU. In the event that a feature needs to be removed, > -it will be listed in this section. The feature will remain functional > -for 2 releases prior to actual removal. Deprecated features may also > -generate warnings on the console when QEMU starts up, or if activated > -via a monitor command, however, this is not a mandatory requirement. > +it will be listed in this section. The feature will remain functional for the > +release in which it was deprecated and one further release. After these two > +releases, the feature is liable to be removed. Deprecated features may also > +generate warnings on the console when QEMU starts up, or if activated via a > +monitor command, however, this is not a mandatory requirement. > > Prior to the 2.10.0 release there was no official policy on how > long features would be deprecated prior to their removal, nor >