From patchwork Wed May 1 18:27:59 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= X-Patchwork-Id: 1930324 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=dNmMhK1o; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-ppc-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4VV5JZ0BMjz1ymc for ; Thu, 2 May 2024 04:32:14 +1000 (AEST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1s2EkU-0003PF-De; Wed, 01 May 2024 14:32:10 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s2Ej0-0001Pz-0Y for qemu-ppc@nongnu.org; Wed, 01 May 2024 14:30:41 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s2Eiw-0003kc-8I for qemu-ppc@nongnu.org; Wed, 01 May 2024 14:30:37 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1714588232; 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; bh=55LYe09ZkKTt5KEzMkOfymT9wIM5eYrex0lvCFU2yqA=; b=dNmMhK1oDDy38yNqqQQTrYx7uq82JM98NI7MhnVTEWHNhy4qkf81hhrc4TSmWiZeufzvyt Jnz9sKdDXP5pqXsPRG/U/I25N0j3pZ+He11YVFo7AeieGPGcALMflFtjMc58QRfIVxkjE0 JPcEG7Y39lC+Alopen+iVhYFuE2KeD4= 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-352-3vzO9TcOM86q7dj0xX7y_w-1; Wed, 01 May 2024 14:30:28 -0400 X-MC-Unique: 3vzO9TcOM86q7dj0xX7y_w-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.rdu2.redhat.com [10.11.54.1]) (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 BFF3A80E95D; Wed, 1 May 2024 18:30:27 +0000 (UTC) Received: from toolbox.redhat.com (unknown [10.42.28.121]) by smtp.corp.redhat.com (Postfix) with ESMTP id 2470A8C4; Wed, 1 May 2024 18:30:17 +0000 (UTC) From: =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= To: qemu-devel@nongnu.org Cc: Harsh Prateek Bora , Peter Maydell , Nicholas Piggin , Richard Henderson , Yanan Wang , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Thomas Huth , =?utf-8?q?C=C3=A9dric_Le_Goater?= , Halil Pasic , Laurent Vivier , qemu-arm@nongnu.org, Daniel Henrique Barboza , Eduardo Habkost , qemu-ppc@nongnu.org, David Gibson , Ilya Leoshkevich , Eric Farman , Christian Borntraeger , "Michael S. Tsirkin" , Paolo Bonzini , Marcel Apfelbaum , David Hildenbrand , qemu-s390x@nongnu.org, =?utf-8?q?Dani?= =?utf-8?q?el_P=2E_Berrang=C3=A9?= Subject: [PATCH 14/14] docs: document special exception for machine type deprecation & removal Date: Wed, 1 May 2024 19:27:59 +0100 Message-ID: <20240501182759.2934195-15-berrange@redhat.com> In-Reply-To: <20240501182759.2934195-1-berrange@redhat.com> References: <20240501182759.2934195-1-berrange@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.1 Received-SPF: pass client-ip=170.10.133.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -29 X-Spam_score: -3.0 X-Spam_bar: --- X-Spam_report: (-3.0 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.897, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-ppc@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-ppc-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-ppc-bounces+incoming=patchwork.ozlabs.org@nongnu.org This extends the deprecation policy to indicate that versioned machine types will be marked deprecated after 3 years, and then subject to removal after a further 3 years has passed. Signed-off-by: Daniel P. Berrangé Reviewed-by: Thomas Huth --- docs/about/deprecated.rst | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst index 7b8aafa15b..55120e774c 100644 --- a/docs/about/deprecated.rst +++ b/docs/about/deprecated.rst @@ -11,6 +11,18 @@ 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. +As a special exception to this general timeframe, rather than have an +indefinite lifetime, versioned machine types are only intended to be +supported for a period of 6 years, equivalent to 18 QEMU releases. All +versioned machine types will be automatically marked deprecated after an +initial 3 years (9 QEMU releases) has passed, and will then be deleted after +a further 3 year period has passed. It is recommended that a deprecated +machine type is only used for incoming migrations and restore of saved state, +for pre-existing VM deployments. Newly deployed VMs should exclusively use a +non-deprecated machine type, with use of the most recent version highly +recommended. Non-versioned machine types follow the general feature +deprecation policy. + Prior to the 2.10.0 release there was no official policy on how long features would be deprecated prior to their removal, nor any documented list of which features were deprecated. Thus