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=-2.3 required=3.0 tests=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 7D765C47404 for ; Fri, 11 Oct 2019 10:05:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 59E37214E0 for ; Fri, 11 Oct 2019 10:05:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727700AbfJKKFn (ORCPT ); Fri, 11 Oct 2019 06:05:43 -0400 Received: from foss.arm.com ([217.140.110.172]:55194 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726808AbfJKKFm (ORCPT ); Fri, 11 Oct 2019 06:05:42 -0400 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 D4EAF337; Fri, 11 Oct 2019 03:05:41 -0700 (PDT) Received: from bogus (e107155-lin.cambridge.arm.com [10.1.196.42]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id B43803F703; Fri, 11 Oct 2019 03:05:40 -0700 (PDT) Date: Fri, 11 Oct 2019 11:05:31 +0100 From: Sudeep Holla To: Marek Szyprowski Cc: linux-arm-kernel@lists.infradead.org, Liviu Dudau , Lorenzo Pieralisi , LKML , Catalin Marinas , Will Deacon , Sudeep Holla Subject: Re: ARM Juno r1 + CONFIG_PROVE_LOCKING=y => boot failure Message-ID: <20191011100521.GA5122@bogus> References: <33a83dce-e9f0-7814-923b-763d33e70257@samsung.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <33a83dce-e9f0-7814-923b-763d33e70257@samsung.com> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Marek, On Fri, Oct 11, 2019 at 11:26:04AM +0200, Marek Szyprowski wrote: > Hi > > Recently I've got access to ARM Juno R1 board and did some tests with > current mainline kernel on it. I'm a bit surprised that enabling > CONFIG_PROVE_LOCKING causes a boot failure on this board. After enabling > this Kconfig option, I get no single message from the kernel, although I > have earlycon enabled. > I don't have Juno R1 but I tried defconfig + CONFIG_PROVE_LOCKING and it boots fine. So if you disable CONFIG_PROVE_LOCKING(i.e. defconfig) boots fine ? Are you using DTB from the mainline ? > I've did my test with default defconfig and current linux-next, > v5.4-rc1, v5.3 and v4.19. In all cases the result is the same. I'm > booting kernel using a precompiled uboot from Linaro release and TFTP > download. > OK, I use UEFI+GRUB but I don't think that should cause any issue. > Is this a known issue? Other ARM64 boards I have access to (Samsung TM2e > and RaspberryPi3) boots fine with the same kernel image. > Not that I am aware of. If you could send me the bootlog with defconfig I can take a look and see if I get any clue. -- Regards, Sudeep