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=-10.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS autolearn=ham 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 DA00BC433DB for ; Mon, 15 Mar 2021 12:18:25 +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 7C2AD64E76 for ; Mon, 15 Mar 2021 12:18:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7C2AD64E76 Authentication-Results: mail.kernel.org; dmarc=pass (p=none dis=none) header.from=xenproject.org 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.97991.185801 (Exim 4.92) (envelope-from ) id 1lLmAo-0005QC-Dj; Mon, 15 Mar 2021 12:18:14 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 97991.185801; Mon, 15 Mar 2021 12:18:14 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lLmAo-0005Q5-9G; Mon, 15 Mar 2021 12:18:14 +0000 Received: by outflank-mailman (input) for mailman id 97991; Mon, 15 Mar 2021 12:18:13 +0000 Received: from mail.xenproject.org ([104.130.215.37]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lLmAn-0005Q0-9r for xen-devel@lists.xenproject.org; Mon, 15 Mar 2021 12:18:13 +0000 Received: from xenbits.xenproject.org ([104.239.192.120]) by mail.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1lLmAn-0007e6-8e for xen-devel@lists.xenproject.org; Mon, 15 Mar 2021 12:18:13 +0000 Received: from iwj (helo=mariner.uk.xensource.com) by xenbits.xenproject.org with local-bsmtp (Exim 4.92) (envelope-from ) id 1lLmAn-0006r6-5x for xen-devel@lists.xenproject.org; Mon, 15 Mar 2021 12:18:13 +0000 Received: from iwj by mariner.uk.xensource.com with local (Exim 4.89) (envelope-from ) id 1lLmAk-0003uH-1w; Mon, 15 Mar 2021 12:18:10 +0000 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" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=xenproject.org; s=20200302mail; h=Subject:CC:To:Date:Message-ID: Content-Transfer-Encoding:Content-Type:MIME-Version:From; bh=6fUQAluxGPgpdxAwSarKSvJdtmGcprvaQt1ogNA/Y+0=; b=0qqMdY2V0A0qX/QZuT833uAuaK ORMhnFspV2W604UZqVKtR9CE6jhrbIqBpvw/esWtjNt37aTu761RhBZ45BbSIXFyywzeJ16GLXATY jHfKAl6TDyqa0pmMk/ZsNuUL0VMsOgu2R3HG0YxZk+LoInhzH0kIIc34GWkUE23LBFTk=; From: Ian Jackson MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit Message-ID: <24655.20609.834996.744652@mariner.uk.xensource.com> Date: Mon, 15 Mar 2021 12:18:09 +0000 To: committers@xenproject.org, xen-devel@lists.xenproject.org CC: Jan Beulich , Andrew Cooper , =?iso-8859-1?Q?Fr=E9d=E9ric?= Pierret , Dario Faggioli Subject: [ANNOUNCE] Xen 4.15 release update - still in feature freeze Thanks everyone for your hard work so far. I think things are looking pretty good, although we have slipped. Please see below for my updated list of release blockers and tracking issues. Please let me know if there is information missing, or if you have corrections. There is one issue on my radar that I am concerned about and want to see sorted out: "io-apic issue on Ryzen 1800X". If we can't get it fixed soon we may have to live with it as a release notes issue. I am probably going to take the scheduler issues off this list because I haven't seen any sign of activity, and because I don't actually think there are release critical bugs there. Please let me know if you disagree. As previously announced, we are still in codefreeze. All changes must have a release-ack. My current tentative schedule is: Tuesday 16th March RC3 test day Wednesday 17th March Branch, turn off debug on the 4.15 branch xen-next will be open but only for non-disruptive changes Monday 22nd March RC4 Tuesday 23nd March RC4 test day Week of 29th March **tentative* Release (probably Tuesday or Wednesday) Thanks, Ian. OPEN ISSUES AND BLOCKERS ======================== io-apic issue on Ryzen 1800X Related Qubes issue tracking this: https://github.com/QubesOS/qubes-issues/issues/6423 Information from Jan Beulich Andrew Cooper Frédéric Pierret ABI stability checking [PATCH for-4.15 00/10] tools: Support to use abi-dumper on libraries [PATCH v2 for-4.15] tools/libxl: Work around unintialised variable libxl__domain_get_device_model_uid() etc. This is testing/build work and will enable ABI checking of future changes to 4.15 after its release. I don't think it's a blocker but it would be nice to have. My most recent impression is that there are still some loose ends here. SCHEDULER ISSUES NOT MAKING PROCESS ? ------------------------------------- BUG: credit=sched2 machine hang when using DRAKVUF Information from Dario Faggioli References https://lists.xen.org/archives/html/xen-devel/2020-05/msg01985.html https://lists.xenproject.org/archives/html/xen-devel/2020-10/msg01561.html https://bugzilla.opensuse.org/show_bug.cgi?id=1179246 Quoting Dario: | Manifests only with certain combination of hardware and workload. | I'm not reproducing, but there are multiple reports of it (see | above). I'm investigating and trying to come up at least with | debug patches that one of the reporter should be able and willing to | test. Dario is working on this. Last update 29.1.21 ? G. Null scheduler and vwfi native problem Information from Dario Faggioli References https://lists.xenproject.org/archives/html/xen-devel/2021-01/msg01634.html Quoting Dario: | RCU issues, but manifests due to scheduler behavior (especially | NULL scheduler, especially on ARM). | | Patches that should solve the issue for ARM posted already. They | will need to be slightly adjusted to cover x86 as well. As of last update from Dario 29.1.21: waiting for test report from submitter. H. Ryzen 4000 (Mobile) Softlocks/Micro-stutters Information from Dario Faggioli As of last update from Dario 29.1.21: Discussions currently ongoing about the severity of this issue. ISSUES BELIEVED NEWLY RESOLVED ============================== Fallout from MSR handling behavioral change. I think there are now no outstanding patches to fix/change MSR behaviour and there is no longer any blocker here ? Key partipants: Jan Beulich Andrew Cooper Use-after-free in the IOMMU code Information from Julien Grall References [PATCH for-4.15 v5 0/3] xen/iommu: Collection of bug fixes for IOMMU teardown Now committed "x86/PV: avoid speculation abuse through guest accessors" Information from Jan Beulich | F. The almost-XSA "x86/PV: avoid speculation abuse through guest | accessors" - the first 4 patches are needed to address the actual | issue. The next 3 patches are needed to get the tree into | consistent state again, identifier-wise. The remaining patches | can probably wait. This has been committed. Problems with xl save / cancel Information from Jürgen Groß: xl daemon won't kill the domain after it has gone through a suspend-cancel cycle. I think this was fixed by tools/libs/light: fix xl save -c handling x86/time: calibration rendezvous adjustments Information from Jan Beulich Not entirely a regression. 3 out of the 4 patches seem to have been committed. Patch 4/ is not targeted at 4.15 I think.