From nobody Sun Dec 29 17:41:23 2024 Delivered-To: importer2@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer2=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1718903007; cv=none; d=zohomail.com; s=zohoarc; b=CGxPKQ2N3/iUXfL3mpkJlmefRqa4bS/uMcKABta7kkfuubHBDsucmogOXBgXYZIX2gjcebFPUSpbA2nRHmdTlsuUC8MfNF4SteLIgcxGpDXP+deMotUB2pC0xNZhbOo2qLIa5xP10pCU5X5BrUFrza1fn9qGa7Ar6VAdUXAVtXQ= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1718903007; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=cp5hTDyX0yXK7RBKij04gMtATUSvfKAIAWpFR+x0kC4=; b=d9mvzt/DiCgBdCbpMpWpNY4RgpDG3OxHzDNlC1fTOwKd0luQOut4sEzjHezWn3uUc5HYoXM+AnrjK4lT4uO5a6BZQ/cATOxZ617Pp50Zo/rkAWfkoyTJbmT/slFE0H9rkTX8h5sUqdcor7F7dHATNCLV+jud0yZEF4S/DpmRiUM= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer2=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1718903007566578.2334634176664; Thu, 20 Jun 2024 10:03:27 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sKL9K-0001vx-A4; Thu, 20 Jun 2024 13:00:39 -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 1sKL8z-0001L5-Mf for qemu-devel@nongnu.org; Thu, 20 Jun 2024 13:00:20 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sKL8x-0001Qh-DO for qemu-devel@nongnu.org; Thu, 20 Jun 2024 13:00:17 -0400 Received: from mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-171-BEtTyNoYMYGeIfmCQyYrJQ-1; Thu, 20 Jun 2024 13:00:04 -0400 Received: from mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.40]) (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 mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 8C66F19560B8; Thu, 20 Jun 2024 17:00:01 +0000 (UTC) Received: from toolbox.redhat.com (unknown [10.42.28.69]) by mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 66BC019560AF; Thu, 20 Jun 2024 16:59:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1718902810; 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=cp5hTDyX0yXK7RBKij04gMtATUSvfKAIAWpFR+x0kC4=; b=SzKl6syugq8EMAQUL4LMAPrQBnnjNMmsHjxYaVIahyR0OClCB/AUEYFFBTKaDUDUroIqkk /DCTuia4tolGvLY7gvPJK+qdR2oNN2BcxHUVs8UDBYc504WSEJDAb9zeNPUkC1qzvvVqoV hZs6pGOSoMQB/U4vzchwv5F6wV1+n54= X-MC-Unique: BEtTyNoYMYGeIfmCQyYrJQ-1 From: =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= To: qemu-devel@nongnu.org Cc: Halil Pasic , devel@lists.libvirt.org, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , "Michael S. Tsirkin" , Eric Farman , qemu-s390x@nongnu.org, Richard Henderson , Nicholas Piggin , David Hildenbrand , Ilya Leoshkevich , David Gibson , qemu-arm@nongnu.org, =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , Harsh Prateek Bora , Yanan Wang , Eduardo Habkost , Peter Maydell , Daniel Henrique Barboza , Thomas Huth , Paolo Bonzini , Marcel Apfelbaum , Christian Borntraeger , Laurent Vivier , qemu-ppc@nongnu.org, =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= Subject: [PATCH v2 14/14] docs: document special exception for machine type deprecation & removal Date: Thu, 20 Jun 2024 17:57:42 +0100 Message-ID: <20240620165742.1711389-15-berrange@redhat.com> In-Reply-To: <20240620165742.1711389-1-berrange@redhat.com> References: <20240620165742.1711389-1-berrange@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.40 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer2=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.129.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: 11 X-Spam_score: 1.1 X-Spam_bar: + X-Spam_report: (1.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.152, 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, RCVD_IN_SBL_CSS=3.335, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@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-devel-bounces+importer2=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer2=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1718903008765100006 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. Reviewed-by: Thomas Huth Signed-off-by: Daniel P. Berrang=C3=A9 Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- docs/about/deprecated.rst | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst index ff3da68208..bba12d1641 100644 --- a/docs/about/deprecated.rst +++ b/docs/about/deprecated.rst @@ -11,6 +11,19 @@ releases, the feature is liable to be removed. Deprecate= d 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. =20 +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 aft= er +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 sta= te, +for pre-existing VM deployments. They should be scheduled for updating to a +newer machine type during an appropriate service window. 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 --=20 2.43.0