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=-7.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 24427C433DB for ; Fri, 15 Jan 2021 09:57:43 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 C31F123877 for ; Fri, 15 Jan 2021 09:57:42 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C31F123877 Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=suse.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.67865.121310 (Exim 4.92) (envelope-from ) id 1l0Lr4-0002vI-Fi; Fri, 15 Jan 2021 09:57:18 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 67865.121310; Fri, 15 Jan 2021 09:57:18 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1l0Lr4-0002vB-Ch; Fri, 15 Jan 2021 09:57:18 +0000 Received: by outflank-mailman (input) for mailman id 67865; Fri, 15 Jan 2021 09:57:17 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1l0Lr3-0002v6-AV for xen-devel@lists.xenproject.org; Fri, 15 Jan 2021 09:57:17 +0000 Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id eeaff0d5-c17e-4265-9b8e-eeed4c03a8cc; Fri, 15 Jan 2021 09:57:15 +0000 (UTC) Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 942CBACF5; Fri, 15 Jan 2021 09:57:14 +0000 (UTC) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: eeaff0d5-c17e-4265-9b8e-eeed4c03a8cc X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1610704634; h=from:from:reply-to: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=JV/7bcL/neSKnUBKp3f8KILWDQf7Q6+rbGW/zNehXEo=; b=mnJpMK3LQHoHCRbKd1X0+cP2hL3URUUO40x720V1V2VjQhyYqbr73ffSYR0+Kf7YEfSG+1 kkEKA8gXYFxPGpGcBu0HQ3EA43tnbTmTJZuY9KhF7JB7TcvucwoCQS0A3Mod9BK2CIXUPu cylrs5TJ5NKjBWnwJ1w705NTS/SDqaU= Subject: Re: [ANNOUNCE] Xen 4.15 release schedule and feature tracking To: Andrew Cooper , Ian Jackson References: <24567.7198.846779.557032@mariner.uk.xensource.com> <24576.27654.137226.608671@mariner.uk.xensource.com> <017cd214-fce8-f8b7-7134-0a89eb45c2ac@citrix.com> Cc: xen-devel@lists.xenproject.org, committers@xenproject.org, Tamas K Lengyel , =?UTF-8?Q?Micha=c5=82_Leszczy=c5=84ski?= From: Jan Beulich Message-ID: <867ee616-d808-0107-cbf4-82b7d296d0e6@suse.com> Date: Fri, 15 Jan 2021 10:57:09 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.6.1 MIME-Version: 1.0 In-Reply-To: <017cd214-fce8-f8b7-7134-0a89eb45c2ac@citrix.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit On 14.01.2021 20:02, Andrew Cooper wrote: > Bugs: > > 1) HPET/PIT issue on newer Intel systems.  This has had literally tens > of reports across the devel and users mailing lists, and prevents Xen > from booting at all on the past two generations of Intel laptop.  I've > finally got a repro and posted a fix to the list, but still in progress. > > 2) "scheduler broken" bugs.  We've had 4 or 5 reports of Xen not > working, and very little investigation on whats going on.  Suspicion is > that there might be two bugs, one with smt=0 on recent AMD hardware, and > one more general "some workloads cause negative credit" and might or > might not be specific to credit2 (debugging feedback differs - also > might be 3 underlying issue). > > All of these have had repeated bug reports.  I'd classify them as > blockers, given the impact they're having on people. 3) Fallout from MSR handling behavioral change. Jan