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=-3.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 F374FC5519F for ; Wed, 18 Nov 2020 10:15:24 +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 47ACD22227 for ; Wed, 18 Nov 2020 10:15:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 47ACD22227 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=antioche.eu.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.29703.59318 (Exim 4.92) (envelope-from ) id 1kfKUU-0003NR-7W; Wed, 18 Nov 2020 10:15:06 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 29703.59318; Wed, 18 Nov 2020 10:15:06 +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" Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kfKUU-0003NK-33; Wed, 18 Nov 2020 10:15:06 +0000 Received: by outflank-mailman (input) for mailman id 29703; Wed, 18 Nov 2020 10:15:04 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kfKUS-0003NF-77 for xen-devel@lists.xenproject.org; Wed, 18 Nov 2020 10:15:04 +0000 Received: from chassiron.antioche.eu.org (unknown [2001:41d0:fe9d:1101::1]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 3c482435-d26c-469e-b2b7-24c7d7c93c83; Wed, 18 Nov 2020 10:15:02 +0000 (UTC) Received: from sandettie.soc.lip6.fr (82-64-3-41.subs.proxad.net [82.64.3.41]) by chassiron.antioche.eu.org (8.15.2/8.15.2) with ESMTPS id 0AIAEvan005478 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=OK); Wed, 18 Nov 2020 11:14:58 +0100 (MET) Received: by sandettie.soc.lip6.fr (Postfix, from userid 373) id 238212E9CC6; Wed, 18 Nov 2020 11:14:52 +0100 (MET) Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kfKUS-0003NF-77 for xen-devel@lists.xenproject.org; Wed, 18 Nov 2020 10:15:04 +0000 X-Inumbo-ID: 3c482435-d26c-469e-b2b7-24c7d7c93c83 Received: from chassiron.antioche.eu.org (unknown [2001:41d0:fe9d:1101::1]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 3c482435-d26c-469e-b2b7-24c7d7c93c83; Wed, 18 Nov 2020 10:15:02 +0000 (UTC) Received: from sandettie.soc.lip6.fr (82-64-3-41.subs.proxad.net [82.64.3.41]) by chassiron.antioche.eu.org (8.15.2/8.15.2) with ESMTPS id 0AIAEvan005478 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=OK); Wed, 18 Nov 2020 11:14:58 +0100 (MET) Received: by sandettie.soc.lip6.fr (Postfix, from userid 373) id 238212E9CC6; Wed, 18 Nov 2020 11:14:52 +0100 (MET) Date: Wed, 18 Nov 2020 11:14:52 +0100 From: Manuel Bouyer To: Jan Beulich Cc: xen-devel@lists.xenproject.org, Roger Pau =?iso-8859-1?Q?Monn=E9?= Subject: Re: NetBSD dom0 PVH: hardware interrupts stalls Message-ID: <20201118101452.GA1454@antioche.eu.org> References: <20201117150949.GA3791@antioche.eu.org> <20201117155807.a7jgmftnj6njg6oz@Air-de-Roger> <20201117164033.GB3093@antioche.eu.org> <8039a29c-4058-ab6e-56ef-d1383deb7e38@suse.com> <20201118092819.GE1085@antioche.eu.org> <6ad38151-d218-03c4-8085-9eff35bd63ff@suse.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <6ad38151-d218-03c4-8085-9eff35bd63ff@suse.com> X-Greylist: Sender succeeded STARTTLS authentication, not delayed by milter-greylist-4.4.3 (chassiron.antioche.eu.org [151.127.5.145]); Wed, 18 Nov 2020 11:14:58 +0100 (MET) On Wed, Nov 18, 2020 at 10:43:27AM +0100, Jan Beulich wrote: > On 18.11.2020 10:28, Manuel Bouyer wrote: > > On Wed, Nov 18, 2020 at 10:16:17AM +0100, Jan Beulich wrote: > >> On 17.11.2020 17:40, Manuel Bouyer wrote: > >>> On Tue, Nov 17, 2020 at 04:58:07PM +0100, Roger Pau Monné wrote: > >>>> [...] > >>>> > >>>> I have attached a patch below that will dump the vIO-APIC info as part > >>>> of the 'i' debug key output, can you paste the whole output of the 'i' > >>>> debug key when the system stalls? > >>> > >>> see attached file. Note that the kernel did unstall while 'i' output was > >>> being printed, so it is mixed with some NetBSD kernel output. > >> > >> Could you try to run Xen's serial port without use of any IRQ > >> (i.e. in "polling" mode), in an attempt to avoid this unstalling > >> (which is likely to render the resulting output at least in part > >> meaningless)? > > > > It there a boot line option for that ? > > Yes, com= has a field for this: > > ### com1 > ### com2 > > `= [/][,[DPS][,[|pci|amt][,[|msi][,[][,[]]]]]]` > > with > > * `` is the IRQ number to use, or `0` to use the UART in poll > mode only, or `msi` to set up a Message Signaled Interrupt. thanks. This marginally changes the boot behavior (the kenrel hangs a little bit earlier) but switching the console input to Xen is enough to get some interrupt, and hitting 'i' causes again the boot to complete. -- Manuel Bouyer NetBSD: 26 ans d'experience feront toujours la difference --