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, URIBL_BLOCKED,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 5B921C2BB1D for ; Tue, 7 Apr 2020 10:01:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2A00C20719 for ; Tue, 7 Apr 2020 10:01:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=armlinux.org.uk header.i=@armlinux.org.uk header.b="TKPdbBqc" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728169AbgDGKBK (ORCPT ); Tue, 7 Apr 2020 06:01:10 -0400 Received: from pandora.armlinux.org.uk ([78.32.30.218]:38248 "EHLO pandora.armlinux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728074AbgDGKBJ (ORCPT ); Tue, 7 Apr 2020 06:01:09 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=armlinux.org.uk; s=pandora-2019; h=Sender:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date: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=DFNz1XFQCqB0ki2rrudESMlC1higHzCyKjV7JRMfmtI=; b=TKPdbBqchi8ItHrKkREA5fEPY WrhftoGdqP393vXFaanrgK4MHLbY/aGdoVqSOMJgUxM3U+7ICHKQ5jPZYZ932Qk3p0VVbNQf352RU 6/lSNjyxQOWAfPXPWQcTVvt8zKrBGYbAU2hkPeBlvJYYXx19xn7unSSx057jloNKHqZULVOAwCG72 2n9hQYBdG2c2Urweyl37UhA8NFN0AQMeplm2AVy3qks47f+jllFHM21fdsphHbmf00YCjjgmhLWIG ZULMubT3MRUoCgqO3DbzJhkeSY9FXX2eEwKhWQ1TfuPdFkxHofAbiQ2Lweoq1znSf+4K/W3UCZbWT G/bsSl+Zg==; Received: from shell.armlinux.org.uk ([2001:4d48:ad52:3201:5054:ff:fe00:4ec]:35144) by pandora.armlinux.org.uk with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jLl2U-0007CO-1L; Tue, 07 Apr 2020 11:01:02 +0100 Received: from linux by shell.armlinux.org.uk with local (Exim 4.92) (envelope-from ) id 1jLl2S-0007DF-8f; Tue, 07 Apr 2020 11:01:00 +0100 Date: Tue, 7 Apr 2020 11:01:00 +0100 From: Russell King - ARM Linux admin To: Corentin Labbe Cc: kexec@lists.infradead.org, linux-kernel@vger.kernel.org, mripard@kernel.org, wens@csie.org, ebiederm@xmission.com, linux-arm-kernel@lists.infradead.org Subject: Re: Trying to kexec on Allwinner A80 Message-ID: <20200407100100.GJ25745@shell.armlinux.org.uk> References: <20200406082720.GA31279@Red> <20200406091600.GF25745@shell.armlinux.org.uk> <20200406092540.GB31279@Red> <20200406093729.GG25745@shell.armlinux.org.uk> <20200406201053.GA10931@Red> <20200407073117.GH25745@shell.armlinux.org.uk> <20200407080144.GA20773@Red> <20200407081257.GI25745@shell.armlinux.org.uk> <20200407093253.GA4630@Red> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200407093253.GA4630@Red> 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 Tue, Apr 07, 2020 at 11:32:53AM +0200, Corentin Labbe wrote: > On Tue, Apr 07, 2020 at 09:12:57AM +0100, Russell King - ARM Linux admin wrote: > > That was not reflected in the command lines given to kexec that you > > quoted previously, so I'm now wondering if you're giving me the full > > information. > > > > In any case, based on the information you've supplied thus far, I have > > no further suggetsions to make. > > > > Sorry I have added --debug after my initial mail. > But I am surprised that no debug output like "MEMORY RANGES" is done (like I got in my first try). > I have started to patch kexec-tools to check it, and debug is enabled. > Furthermore, I got in locate_hole:237 memory_ranges=0. > So the memory region in struct kexec_info is not initialized (and so cannot be printed) The memory region information is initialised by get_memory_ranges() in kexec/arch/arm/kexec-arm.c, which reads /proc/iomem. That is called from my_load(), which checks that info.memory_ranges is non-zero. If it's zero, it errors out with "Could not get memory layout". -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 10.2Mbps down 587kbps up