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=-3.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS 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 A3B71C433E0 for ; Wed, 17 Mar 2021 13:23:50 +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 C425364F17 for ; Wed, 17 Mar 2021 13:23:49 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C425364F17 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]:51522 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lMW9M-00060A-8Q for qemu-devel@archiver.kernel.org; Wed, 17 Mar 2021 09:23:48 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:43590) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lMW8f-0005Ps-K5 for qemu-devel@nongnu.org; Wed, 17 Mar 2021 09:23:06 -0400 Received: from mail-ej1-x636.google.com ([2a00:1450:4864:20::636]:37204) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lMW8b-0004AJ-5Y for qemu-devel@nongnu.org; Wed, 17 Mar 2021 09:23:05 -0400 Received: by mail-ej1-x636.google.com with SMTP id bm21so2592088ejb.4 for ; Wed, 17 Mar 2021 06:23:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=rphJhjkCH8kuw+MPjRKlFNngaeDtByrEV/v9buyyszI=; b=QGmIM+DPndpdtVtKZwL6iNQrN/uXTpTOEQMPV8pm2a4cE8RvjmuseKSJ3p5Ke7NezF NN3WDo9DyrcUo4AF7W2BscZO8gH76XWIYZJJK71w3gNr6zlGZsniFKG3gKCGp4kK+eyv cAesUtpaePwSIleyjKbSDoJPxEggIWiVQiTM4CohTPwUWBLzXbQBUHtHcFafzaHvAkQR odgHehOPGOS9SglkvGQt+U7a4hrkD6z4tI7BGp979h5IrrISsTpGaNgqrQCeckf6+IV1 VGRnpIz53GBfaAtAUGyGXYnYNDhE4ScKJypMEu8p8/TC6D6aAf0lKMMFdZN3EaB5uPHv y99w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=rphJhjkCH8kuw+MPjRKlFNngaeDtByrEV/v9buyyszI=; b=DVEupkwWCtBgl6fqEV9LtET1R5yIEdbgKteXz42fvTTsTY5BovqG8Kbfvh2Dx4HcjG R+KGJBwRVmJI69NJ9a+bwVaJEHbsgMML6aEhzlC7nITRugyDd/UZdcpdvNLjMfcy+B8z oA8UkueTOocOxxEgATshCdaGUo6g7yxKuwyHhv68LhyDmR/nA9LNHz+1uUkmKaZASN8P siqz9shuMNLPlFDYSQPX+g1DdMrgxJ1pLoT9KcxvdFv37pjDr2mOgQRCCwz4eyt4IKk3 bSE/nuTcu73UN611Z76V+pcZp+SmEOmxVSkNP57FOVQV50nGw7VAXq2Po9VpP7Na18Gs 0e/Q== X-Gm-Message-State: AOAM533TKa2uWyPqS+2/5J+uWGO/ZNyN4tHFdMls/zWBzalZ9nrmnB4U qeKxDNx4LB9gT50c2RgvzpMVcHxv2J9g0f+54IDZOA== X-Google-Smtp-Source: ABdhPJy/WkAoCz+iieBMPGj4KtsyUAygclUt6rA3GjlXfWh2LEV+NAzdwmEy/C7FE5snmFFGXTpMwMootI16bJZQbQQ= X-Received: by 2002:a17:906:8a65:: with SMTP id hy5mr36065258ejc.250.1615987379486; Wed, 17 Mar 2021 06:22:59 -0700 (PDT) MIME-Version: 1.0 References: <20210317044441.112313-1-gshan@redhat.com> <73a30558-469e-8ef0-02b2-aaaaa2449cda@redhat.com> <3e7ba090-c45e-8fa4-1a59-16856241cbdc@redhat.com> <20210317125453.t6f7xs7bqf2vvbgu@kamzik.brq.redhat.com> In-Reply-To: <20210317125453.t6f7xs7bqf2vvbgu@kamzik.brq.redhat.com> From: Peter Maydell Date: Wed, 17 Mar 2021 13:22:48 +0000 Message-ID: Subject: Re: [PATCH] hw/char/pl011: Fix clock migration failure To: Andrew Jones Content-Type: text/plain; charset="UTF-8" Received-SPF: pass client-ip=2a00:1450:4864:20::636; envelope-from=peter.maydell@linaro.org; helo=mail-ej1-x636.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, 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: Luc Michel , QEMU Developers , =?UTF-8?Q?Philippe_Mathieu=2DDaud=C3=A9?= , =?UTF-8?B?TWFyYy1BbmRyw6kgTHVyZWF1?= , qemu-arm , Shan Gavin , Paolo Bonzini , Gavin Shan Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Wed, 17 Mar 2021 at 12:55, Andrew Jones wrote: > I'm also curious what the state of mach-virt's machine types are for > migration. Probably not great -- I don't think anybody is really testing cross-version migration, and I don't think there's a great deal of in-practice use of it for Arm either. (See also the issue with accidentally having env->features in the CPU migration data, which broke cross-version migration: that was around a while and we only got one user complaint about it.) Unless we have a serious test suite for this kind of thing upstream it's just going to continue to be broken, because at the moment all we have is "people make best-efforts to think about migration compat when coding and reviewing, but don't actually test". thanks -- PMM