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=-2.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,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 6C111C3A5A7 for ; Wed, 4 Sep 2019 11:33:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3523020820 for ; Wed, 4 Sep 2019 11:33:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="MxQkl5wb" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729537AbfIDLdA (ORCPT ); Wed, 4 Sep 2019 07:33:00 -0400 Received: from merlin.infradead.org ([205.233.59.134]:33158 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726240AbfIDLdA (ORCPT ); Wed, 4 Sep 2019 07:33:00 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.20170209; 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:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=7ZxpYw80TnM8pUdDxCkEZ9lIF/h0K47tY7bLiAqa7C0=; b=MxQkl5wbWOtRJmDF7L+kjiwqn FjgAucHm3TGh5oMv5bhgcalqzyhVhqHQULpzIIAU25pplwNxZTzrxRqTcfV4sFl5B7EzUxncC9SMk 8nEoRHxAhiNHW+MBjvHLgNIUAQYCb+Po7rqtBfOD/NzisZcf6AAhCj1PjwUkkUX0Ks5x4fB7DMEyP 3nOehKy+ctGoGZzwb1IoE7Ta5u05vQ1rTI3qDbflhflHcmBZkT+Qd9EpEnSoRhRGZaCscH+U5rgds RyZu76jnQgPE6rdo4HEkktnXZYzBEqEln7jUMGa6a3UT9zVxajOee5RRUJ4fJy5KFm9pR8lnDySvP yvchMp4hQ==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by merlin.infradead.org with esmtpsa (Exim 4.92 #3 (Red Hat Linux)) id 1i5TWq-0004RY-JD; Wed, 04 Sep 2019 11:32:48 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id AD86D306024; Wed, 4 Sep 2019 13:32:10 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 3C4E429D9E73B; Wed, 4 Sep 2019 13:32:47 +0200 (CEST) Date: Wed, 4 Sep 2019 13:32:47 +0200 From: Peter Zijlstra To: Juri Lelli Cc: Alessio Balsini , mingo@kernel.org, linux-kernel@vger.kernel.org, dietmar.eggemann@arm.com, luca.abeni@santannapisa.it, bristot@redhat.com, dvyukov@google.com, tglx@linutronix.de, vpillai@digitalocean.com, rostedt@goodmis.org Subject: Re: [RFC][PATCH 00/13] SCHED_DEADLINE server infrastructure Message-ID: <20190904113247.GF2349@hirez.programming.kicks-ass.net> References: <20190726145409.947503076@infradead.org> <20190903142732.GA35593@google.com> <20190904105037.GE5158@localhost.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190904105037.GE5158@localhost.localdomain> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Sep 04, 2019 at 12:50:37PM +0200, Juri Lelli wrote: > Hi Alessio, > > On 03/09/19 15:27, Alessio Balsini wrote: > > Hi Peter, > > > > While testing your series (peterz/sched/wip-deadline 7a9e91d3fe951), I ended up > > in a panic at boot on a x86_64 kvm guest, would you please have a look? Here > > attached the backtrace. > > Happy to test any suggestion that fixes the issue. > > Are you running with latest fix by Peter? > > https://lore.kernel.org/lkml/20190830112437.GD2369@hirez.programming.kicks-ass.net/ > > It seems that his wip tree now has d3138279c7f3 on top (and the fix > above has been merged). > > Not sure it fixes also what you are seeing, though. He likely is; but it is also very likely I messed it up somehow; I didn't even boot that branch :/ I'll try and have a look, but I'm running out of time before LPC.