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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 7A249C54E58 for ; Tue, 12 Mar 2024 05:01:45 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rjuG4-0007kI-No; Tue, 12 Mar 2024 01:01:00 -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 1rjuFp-0007jj-79; Tue, 12 Mar 2024 01:00:45 -0400 Received: from mail-pf1-x431.google.com ([2607:f8b0:4864:20::431]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1rjuFl-00006I-RU; Tue, 12 Mar 2024 01:00:44 -0400 Received: by mail-pf1-x431.google.com with SMTP id d2e1a72fcca58-6e56787e691so4069466b3a.0; Mon, 11 Mar 2024 22:00:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1710219635; x=1710824435; darn=nongnu.org; h=in-reply-to:references:from:subject:cc:to:message-id:date :content-transfer-encoding:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=2LE3qelXEvIBZTwy861HMsGltqDCoKADsEHL8U3k2b4=; b=h02/jedQFDAvxuFE9iGAppEr8G3kPt1ZHKaayu3cGRXjy1v7y1N1QYlNBSaoruV+Hz 7rQKuSn6Lz2x/DOsDB/I3/CMGXE3lKflfcqJ6aWu6ZhnmixX+IKelw33lXCwj/Tt4eNG y7rSdnSoJUg2hFrMjucB3vR948A33/GXeefCEhcz5KemJKlWLPHv0kGviOpJaOt9LSWc 9a/DyY+/LAv+matngITI+Y+9wqFQWhwszFLjvur77K4szC2B+l/nGO50Q6Al8WW2Mg8m HDLgDCYtqVrnzYpn8MnMqanisBMVIIksWDUuyjFavsaxp4iR7HdIQEX3qGiP4k6K3OnV cNZQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710219635; x=1710824435; h=in-reply-to:references:from:subject:cc:to:message-id:date :content-transfer-encoding:mime-version:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=2LE3qelXEvIBZTwy861HMsGltqDCoKADsEHL8U3k2b4=; b=pdCy2PtMjACZp08dLgB2nv0MRgU5n80sGFS4ePpNsKh6m2zrGi/s8niZTfYgKxF8Yu BBdQo/jgVkzHSYurPdRyNla656EZFFVoj632vWerf0sJLnUToJouVrwv/pHYZGyHGESe Z5JNnm4sQghPxrkPo1oIzWNNWmkgvnfVMrlSOqgwgkbMrIeqldxkWHa+TZGUmvPntR4D 1i5xZwaE1+JiYdBb99aaJgdyvhq2u/i6E+8MjeV+51++jtYK4YEPWsGLIoJ+7Cobxjuo HeU+lXTeuS8VSBvKq9ne4h9sXdm72xX90Sg/PFBDCgp5mSXjijv/hFT9v0xw4v2ms4G3 1mMA== X-Forwarded-Encrypted: i=1; AJvYcCU4m5qQCjZgiUZSHt+R+12Ei8DKbs1rpboiMYZ4PyzFpw60yRZtXnMZgB3lK/YXn19ut1X1cwIcm8mad2pBv7h6OG9SEbvPZ+SZC+dmCw73ILISaqD4CzPYC38= X-Gm-Message-State: AOJu0YyjNOU2CeBkvBjRzuHIZPjIuC16d9GNo6inCwZfN6KqjqKWGkoC 3uWJli4gASA1cyfbnipk7T9oCfYlZkQc7BILsmOMFPKAU8vefr/CqiTxy54JHmA= X-Google-Smtp-Source: AGHT+IFN+BXKH1OZ1ErtE2ySA/Zwgf49hwkZ+fXjXiOVh96raTvGiNcFQwjYMb2MiipTen6Zt+tXmg== X-Received: by 2002:a05:6a20:548c:b0:1a1:879e:9b33 with SMTP id i12-20020a056a20548c00b001a1879e9b33mr9720669pzk.13.1710219634646; Mon, 11 Mar 2024 22:00:34 -0700 (PDT) Received: from localhost ([1.146.55.44]) by smtp.gmail.com with ESMTPSA id v66-20020a626145000000b006e6450ccac5sm5431279pfb.126.2024.03.11.22.00.30 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 11 Mar 2024 22:00:34 -0700 (PDT) Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Tue, 12 Mar 2024 15:00:27 +1000 Message-Id: To: =?utf-8?b?RGFuaWVsIFAuIEJlcnJhbmfDqQ==?= , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= Cc: =?utf-8?q?C=C3=A9dric_Le_Goater?= , "David Gibson" , "Daniel Henrique Barboza" , "Thomas Huth" , "Harsh Prateek Bora" , , Subject: Re: [PATCH v2] spapr: Tag pseries-2.1 - 2.11 machines as deprecated From: "Nicholas Piggin" X-Mailer: aerc 0.15.2 References: <20231214181723.1520854-1-clg@kaod.org> In-Reply-To: Received-SPF: pass client-ip=2607:f8b0:4864:20::431; envelope-from=npiggin@gmail.com; helo=mail-pf1-x431.google.com 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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On Tue Mar 12, 2024 at 4:56 AM AEST, Daniel P. Berrang=C3=A9 wrote: > On Mon, Mar 11, 2024 at 06:46:53PM +0100, Philippe Mathieu-Daud=C3=A9 wro= te: > > Hi, > >=20 > > On 14/12/23 19:17, C=C3=A9dric Le Goater wrote: > > > pseries machines before version 2.11 have undergone many changes to > > > correct issues, mostly regarding migration compatibility. This is > > > obfuscating the code uselessly and makes maintenance more difficult. > > > Remove them and only keep the last version of the 2.x series, 2.12, > > > still in use by old distros. > >=20 > > By the time we get to QEMU v9.2, will pseries-2.12 still be used > > by old distros? (which ones btw?) > > That's the wrong question really. > > Machine types are there to facilitate live migration, and by > extension also handle save/restore to disk. > > So the question is more which distros are likely to ship > new QEMU 9.2, and also still need the ability to incoming > migrate from an older version of their distro where 2.12 > (or a downstream equiv) was a fully supported machine type. >From Cedric's list, they are ~2018 vintage. I don't know if there is upstream policy on this, but 2025 seems reasonable to remove support for live migration from then. Thanks, Nick