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=-0.6 required=3.0 tests=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 151B9C76188 for ; Tue, 16 Jul 2019 06:55:22 +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 D79682145D for ; Tue, 16 Jul 2019 06:55:21 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=jms.id.au header.i=@jms.id.au header.b="mujOGOqC" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D79682145D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=jms.id.au Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:45698 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hnHMu-0007Pq-Vn for qemu-devel@archiver.kernel.org; Tue, 16 Jul 2019 02:55:20 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:37225) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hnHMj-0006uU-PO for qemu-devel@nongnu.org; Tue, 16 Jul 2019 02:55:10 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hnHMi-00079j-RU for qemu-devel@nongnu.org; Tue, 16 Jul 2019 02:55:09 -0400 Received: from mail-qt1-x841.google.com ([2607:f8b0:4864:20::841]:37736) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1hnHMc-00070C-SL; Tue, 16 Jul 2019 02:55:03 -0400 Received: by mail-qt1-x841.google.com with SMTP id y26so18425204qto.4; Mon, 15 Jul 2019 23:55:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jms.id.au; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=usensxpkP49U49PKDqI42Xxl/kfLbhduueChDwmz3K4=; b=mujOGOqC7rBngmL1oo23bhsSFuXzdfTOQ1T9J/1k82QOioccqV5RrWOw6eOZux+Hv1 zK9z5lLRlndkaMuMF2BWr/o/QNdnDVo4TtKrIyCq5yX2HxtzlKoVDWwr3Q1thdd3XT64 aw/2GXyPqzq36MhvmPB7WKUe4VfdAUtjHi6XQ= 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:content-transfer-encoding; bh=usensxpkP49U49PKDqI42Xxl/kfLbhduueChDwmz3K4=; b=Gk520HtLFgKmYz6IKXL1OuoArpBn1WQdmMSzN2R0YRr7fid37y9NPrBIWDvpSmVl4P jwNEfFT3ACzwUGA1y+E8QzFfs3hqlb3EuVfE4T/ipY+6NloGtblOke4vVDDH+2DXHMYa HF0ETh1uIHvKb+UKnM9sLr8unvO2dOaPOF+ZN0940W3hbTpraMUgsE2sqLdcC3bH6IG5 KkWb9K4dsMZ7uPNMAaLDaaM6qALaGoEfcFbHGLKYPmjyBpnrH5zrWLlw+T2OG8MyvmuJ ZysyNNzy97boDMcY7u1xqC4tqmoE/g3TrwpKZQg4Alo4uQ3jbZJzJBqy41lZIwcv8DGJ 4PQQ== X-Gm-Message-State: APjAAAXXFm8OuPQETD9hdIWJvzdZFDnmriAu/NRhZGr6rSesnMRlUBpo /HA8x9il80Dazc53Lkh2aElAcSREp8YmXmENDcQ= X-Google-Smtp-Source: APXvYqwykvTarS/l2maKnZcuje8bvfubs3i/lWMFSignKUIq9OlBhYE/zPQjY1pq1RlMmDeH/1tMwa/MpUYokdFDuCU= X-Received: by 2002:a0c:afd5:: with SMTP id t21mr22451648qvc.105.1563260101260; Mon, 15 Jul 2019 23:55:01 -0700 (PDT) MIME-Version: 1.0 References: <20190704055150.4899-1-clg@kaod.org> <20190704101345.GC1609@stefanha-x1.localdomain> In-Reply-To: From: Joel Stanley Date: Tue, 16 Jul 2019 06:54:48 +0000 Message-ID: To: Peter Maydell Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::841 Subject: Re: [Qemu-devel] [PATCH for 4.1] aspeed/timer: Provide back-pressure information for short periods 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: Andrew Jeffery , QEMU Developers , qemu-arm , =?UTF-8?Q?C=C3=A9dric_Le_Goater?= , Stefan Hajnoczi , Paolo Bonzini , =?UTF-8?Q?Philippe_Mathieu=2DDaud=C3=A9?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Hi Peter, On Thu, 4 Jul 2019 at 12:26, Paolo Bonzini wrote: > > On 04/07/19 12:13, Stefan Hajnoczi wrote: > > On Thu, Jul 04, 2019 at 11:26:53AM +0200, Philippe Mathieu-Daud=C3=A9 w= rote: > >> CC'ing Stefan & Paolo for a non-ARM view on this... > > > > I'm not familiar with the various clock smoothing techniques implemente= d > > in QEMU and KVM, but this looks okay given that Linux guests expect > > this. > > Yeah, even KVM applies a minimum period of 200us to the x86 LAPIC timer. Can we please merge this so guests can boot on 4.1? Cheers, Joel