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Tue, 24 Nov 2020 14:09:58 +0000 Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 6a4531a9-0552-4d26-b49c-67a208347313; Tue, 24 Nov 2020 14:09:56 +0000 (UTC) Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 1BA96AC2D; Tue, 24 Nov 2020 14:09:56 +0000 (UTC) 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 1khZ14-0002Va-Bh for xen-devel@lists.xenproject.org; Tue, 24 Nov 2020 14:09:58 +0000 X-Inumbo-ID: 6a4531a9-0552-4d26-b49c-67a208347313 Received: from mx2.suse.de (unknown [195.135.220.15]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTPS id 6a4531a9-0552-4d26-b49c-67a208347313; Tue, 24 Nov 2020 14:09:56 +0000 (UTC) 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=1606226996; 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=Y5DXCDsO/WoTaSU6W+lK4swzLhsvT65+FBFkej8CZm0=; b=qS5x6JMx4Zc13WSUIAfIIgc7Bxmvz6otUSlfJcD5pp8MSduIvnggU9zOCbR0Xkmi0cglr3 Toi7gMJC+2cp2XPnkTB2RMo4FaYTUJR7mb4A+KwopFzA00V1fdw+dgzwsB7i1ikSqSb154 U1wSVg1rbd8k3pM4fwUxxGdjahZf/K8= Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 1BA96AC2D; Tue, 24 Nov 2020 14:09:56 +0000 (UTC) Subject: Re: NetBSD dom0 PVH: hardware interrupts stalls To: Manuel Bouyer Cc: xen-devel@lists.xenproject.org, =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= References: <20904a6a-ac64-755d-d228-4c49faf66fb5@suse.com> <20201120103824.GJ1508@antioche.eu.org> <20201123095713.orfpg72r73m7f46n@Air-de-Roger> <20201123113241.GE2520@antioche.eu.org> <20201123125112.q3zqb4e5nk6jg4hw@Air-de-Roger> <20201123143150.GG2520@antioche.eu.org> <20201123170610.kzfxvcgkdkvh3ex4@Air-de-Roger> <20201123173925.GG4662@antioche.eu.org> <20201124122102.3igsriesou3vl6mu@Air-de-Roger> <20201124135948.GL2020@antioche.eu.org> From: Jan Beulich Message-ID: <6d6a77cf-58de-4e4d-ed75-e9365be060b7@suse.com> Date: Tue, 24 Nov 2020 15:09:55 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.5.0 MIME-Version: 1.0 In-Reply-To: <20201124135948.GL2020@antioche.eu.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit On 24.11.2020 14:59, Manuel Bouyer wrote: > On Tue, Nov 24, 2020 at 01:21:02PM +0100, Roger Pau Monné wrote: >> [...] >>> What we're missing is LAPIC information, since the masked status logged >>> is unclear: (-MM) isn't fully matching up with "mask=0". But of course >>> the former is just a software representation, while the latter is what >>> the RTE holds. IOW for the interrupt to not get delivered, there needs >>> to be this or a higher ISR bit set (considering we don't use the TPR), >>> or (I think we can pretty much exclude this) we'd need to be running >>> with IRQs off for extended periods of time. >> >> Let's dump the physical lapic(s) IRR and ISR together with the >> IO-APIC state. Can you please apply the following patch and use the >> 'i' key again? (please keep the previous patch applied) > > Done, you'll find the log at > http://www-soc.lip6.fr/~bouyer/xen-log6.txt Hmm, I can't spot respective output. Are you sure you did this with a hypervisor with Roger's latest patch in place? Jan