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 73E08ECE58C for ; Fri, 11 Oct 2019 10:59:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 490482084C for ; Fri, 11 Oct 2019 10:59:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727823AbfJKK71 (ORCPT ); Fri, 11 Oct 2019 06:59:27 -0400 Received: from foss.arm.com ([217.140.110.172]:56512 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726885AbfJKK71 (ORCPT ); Fri, 11 Oct 2019 06:59:27 -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 5BF3428; Fri, 11 Oct 2019 03:59:26 -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 2293E3F703; Fri, 11 Oct 2019 03:59:25 -0700 (PDT) Date: Fri, 11 Oct 2019 11:59:23 +0100 From: Sudeep Holla To: Marek Szyprowski Cc: James Morse , Lorenzo Pieralisi , Catalin Marinas , Liviu Dudau , Sudeep Holla , LKML , Will Deacon , linux-arm-kernel@lists.infradead.org Subject: Re: ARM Juno r1 + CONFIG_PROVE_LOCKING=y => boot failure Message-ID: <20191011105923.GB5122@bogus> References: <33a83dce-e9f0-7814-923b-763d33e70257@samsung.com> <20191011100521.GA5122@bogus> <7655fb41-cd13-0bc4-e656-040e0875bab8@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <7655fb41-cd13-0bc4-e656-040e0875bab8@arm.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 On Fri, Oct 11, 2019 at 11:38:17AM +0100, James Morse wrote: > Hi guys, > > On 11/10/2019 11:05, Sudeep Holla wrote: > > On Fri, Oct 11, 2019 at 11:26:04AM +0200, Marek Szyprowski wrote: > >> 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. > > I just tried this on my r1, v5.4-rc1 with this configuration worked just fine. > > My cmdline is: > | root=/dev/sda6 loglevel=9 earlycon=pl011,0x7ff80000 hugepagesz=2M hugepages=512 > | crashkernel=1G console=ttyAMA0 resume=/dev/sda2 no_console_suspend efi=debug > > > >> 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. > > ... same ... this uboot binary looks like the main difference. > Is it using u-boots UEFI support? Is it possible to turn that off? > Did give a quick try with mainline uboot on my Juno R2 and it boots fine. Not sure if EFI support is default there. I am using vexpress_aemv8a_juno_defconfig > It may that lockdep is just perturbing the size of the binary. It adds an > extra 4MB for me. The image size was 35MB. I was thinking if it has some wrongly configured firmware, but since defconfig works, it must have sane firmware. -- Regards, Sudeep