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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 83F70C7618D for ; Tue, 14 Mar 2023 12:46:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=rcJY6Ai+Kkn9NjfZ2K33sj0eFBClwT9kre6pL/RmfP8=; b=lHxABe/jaO+UTc eevweJ0ouYcA9SB/o4pI5zy+eunRq0YDnrn9n0S+gtfocdGrU8HocQ9/6geOlz+Tui7bQEXpouo9M z6ZglvRCDYLrSH7BsN+A4N5XKfard2sKrmAdU/Vfvn6NMZVAGnbuR1ks5qu6XGJcXuloZvcV1Ehj2 cHdu9zVOPe84PyOdcnd0NoOjowsBkqdUygbbvx2W4bhUdAE3yMjwJf8fXE19zZWV4XFitneoO7fDT kbQ/m0w+V6RFTOujlOiSPrYA8hNUDGaihkhnmXgBrpz8U1DXcVeZPDxQoeIsUakmFD+D8CkPTVcEX YIr56tkwJQhMX5ke1gGw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pc42S-00AB4c-0X; Tue, 14 Mar 2023 12:46:00 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pc42Q-00AB3t-3A for linux-arm-kernel@bombadil.infradead.org; Tue, 14 Mar 2023 12:45:58 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=yn4GPHHPxCQi+e5GpRUjUc14SGWcDdYwPw/2eN0aMC8=; b=hd4yi8MF0s9Au0YAYb6rmxh0xi +zgPqwk9PYdtGSdvgITFGbcfuajFx7FeD4UKc8o1IZB/3lHoTbNkGc4v9NGxwBtWWHc5UOZTVQUbj LXxdn6Xz24xXGucUuJe9aTmaHxt7KuonRQ+LyQYFSmenEiSG/P4/CGPXRfxvjVxQaQ3NiFAp2wW4s 1A6P2dT6sMxVmFTwEKnsSRTcqy8xrgnTljBxfI/m9S9fWOC23dB1YTmL/FbBqHVc7hf4thXEZY1WQ +rRJjqmZZWHVjljNllGK/4qFBIQF8cqovd5s4xXJjw5SlNHdgmDPRpAkB8/Hq/MRB8NunkaoSdyBH MEk4mtFg==; Received: from foss.arm.com ([217.140.110.172]) by desiato.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pc2S1-001l4H-21 for linux-arm-kernel@lists.infradead.org; Tue, 14 Mar 2023 11:04:20 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 3DBFC4B3; Tue, 14 Mar 2023 04:04:55 -0700 (PDT) Received: from e120937-lin (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 84F6E3F67D; Tue, 14 Mar 2023 04:04:10 -0700 (PDT) Date: Tue, 14 Mar 2023 11:04:00 +0000 From: Cristian Marussi To: Marc Zyngier Cc: Oliver Upton , Jeremy Linton , linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-kernel@vger.kernel.org, David Woodhouse Subject: Re: Circular lockdep in kvm_reset_vcpu() ? Message-ID: References: <3496a6a10b2d8693825e733b871938f5@misterjones.org> <82978ec75c0b34203dd1df693e7adf83@kernel.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <82978ec75c0b34203dd1df693e7adf83@kernel.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230314_110417_885721_E064B9BB X-CRM114-Status: GOOD ( 13.04 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, Mar 14, 2023 at 09:28:25AM +0000, Marc Zyngier wrote: > On 2023-03-13 18:20, Cristian Marussi wrote: > > On Mon, Mar 13, 2023 at 02:09:55PM +0000, Marc Zyngier wrote: > > > > And -rc2 works just fine here. > > > > Thanks, I'll dig deeper what's going on un my setup. > > Actually, you really want this patch[1] which is on its > way to Linus. > > It could explain the issue you're seeing with SMP. Hi Marc, thanks this just solves for me on JUNO with guest SMP. Indeed with earlycon on JUNO with SMP I was seeing, beside a lot of workqueue lockup that finally hanged the guest, some puzzling 'time-traveling' stamps that seemed to align more with the host time than the guest. [ 0.509305] thermal_sys: Registered thermal governor 'step_wise' [ 0.509327] thermal_sys: Registered thermal governor 'power_allocator' [ 282.404523] audit: type=2000 audit(0.372:1): state=initialized audit_enabled=0 res=1 [ 0.526380] cpuidle: using governor menu [ 0.530378] hw-breakpoint: found 6 breakpoint and 4 watchpoint registers. [ 0.536241] ASID allocator initialised with 65536 entries [ 0.547455] Serial: AMBA PL011 UART driver [ 0.563267] Callback from call_rcu_tasks() invoked. [ 282.463816] KASLR disabled due to lack of seed [ 282.470356] HugeTLB: registered 1.00 GiB page size, pre-allocated 0 pages [ 282.476182] HugeTLB: 0 KiB vmemmap can be freed for a 1.00 GiB page .... ..... [ 345.799753] io scheduler bfq registered [ 126.753573] watchdog: BUG: soft lockup - CPU#0 stuck for 118s! [kworker/u4:0:9] [ 126.759801] Modules linked in: [ 126.762397] irq event stamp: 713 Thanks a lot for the help. Cristian _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel