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=-6.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 B689AC43460 for ; Mon, 10 May 2021 09:46:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7C04B61430 for ; Mon, 10 May 2021 09:46:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230145AbhEJJrz (ORCPT ); Mon, 10 May 2021 05:47:55 -0400 Received: from mail.kernel.org ([198.145.29.99]:33204 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230093AbhEJJrz (ORCPT ); Mon, 10 May 2021 05:47:55 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 4B54960FDA; Mon, 10 May 2021 09:46:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1620640010; bh=21GdrFSAMQTXMFVqvxpKiSR1Lz6xlfRm4Wzori0Wuyg=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=caotaLPrm2BobhTu6NiJSLEk3GWqQuWfa8ZP7fUS671MX7PbGKUGdv7/M4475rDTp tRAqHDBN/yQ1rI+qYO75gU7VUYwJj2Kp5d1gey/kBNzt2xgMJzVoxNSTwkPW7N1hep xJd3RgAJKFL8qo2E9HocZdWhTrhxYevXfV3LSANM= Date: Mon, 10 May 2021 11:46:48 +0200 From: Greg Kroah-Hartman To: Linus Walleij Cc: Ard Biesheuvel , Florian Fainelli , "# 3.4.x" , Jonathan Corbet , Russell King , Nicolas Pitre , Mike Rapoport , Andrew Morton , Nick Desaulniers , Joe Perches , Max Filippov , Tian Tao , "open list:DOCUMENTATION" , open list , "moderated list:ARM PORT" , Sasha Levin Subject: Re: [PATCH stable 5.10 0/3] ARM FDT relocation backports Message-ID: References: <20210509173029.1653182-1-f.fainelli@gmail.com> <5f8fed97-8c73-73b0-6576-bf3fbcdb1440@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org On Mon, May 10, 2021 at 11:37:01AM +0200, Linus Walleij wrote: > On Mon, May 10, 2021 at 9:43 AM Greg Kroah-Hartman > wrote: > > On Sun, May 09, 2021 at 06:22:05PM -0700, Florian Fainelli wrote: > > > > This does not qualify as a regression in that it has never worked for > > > the specific platform that I have shown above until your 3 commits came > > > in and fixed that particular FDT placement. To me this qualifies as a > > > bug fix, and given that the 3 (now 4) commits applied without hunks, it > > > seems reasonable to me to back port those to stable. > > > > As this isn't a regression, why not just use 5.12 on these platforms? > > Why is 5.4 and 5.10 needed? > > Actually I think it *is* a regression, but not a common one. The bug that > Ard is fixing can appear when the kernel grows over a certain size. > > If a user compile in a new set of functionality and the kernel size > reach a tripping point so that the DTB ends up just outside the 1:1 > lowmem map, disaster strikes. > > This has been a long standing mysterious bug for people using > attached device trees. Ok, then feel free to ack them when they get resubmitted. thanks, greg k-h