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=-3.8 required=3.0 tests=BAYES_00, 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 17124C433E1 for ; Fri, 21 Aug 2020 15:56:34 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7ACDB20855 for ; Fri, 21 Aug 2020 15:56:33 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7ACDB20855 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=sguazz.it Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 4BY5jW3c3yzDrF0 for ; Sat, 22 Aug 2020 01:56:31 +1000 (AEST) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=centrum.lixper.it (client-ip=46.4.16.148; helo=centrum.lixper.it; envelope-from=srs0=9qiu=b7=sguazz.it=giuseppe@centrum.lixper.it; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=sguazz.it Received: from centrum.lixper.it (centrum.lixper.it [46.4.16.148]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4BY5Rg0ZhvzDrCm for ; Sat, 22 Aug 2020 01:44:30 +1000 (AEST) Received: from net-2-44-194-190.cust.vodafonedsl.it ([2.44.194.190] helo=uefi) by centrum.lixper.it with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from ) id 1k99DM-0001D8-0U; Fri, 21 Aug 2020 17:44:25 +0200 Message-ID: Subject: Re: kernel since 5.6 do not boot anymore on Apple PowerBook From: Giuseppe Sacco To: Christophe Leroy , "linuxppc-dev@lists.ozlabs.org" Date: Fri, 21 Aug 2020 17:44:18 +0200 In-Reply-To: <5158eae8-6809-ae07-0d16-58f2a766f534@csgroup.eu> References: <89e412a76350b28f791bb8a2b6f9647a034f6fc8.camel@sguazz.it> <04544f16-fb20-54b9-e56e-47d45af03b6c@csgroup.eu> <64815669-5282-f74f-efc6-6c4c376fb602@csgroup.eu> <990279c219476c4d513df52454adf583de32641a.camel@sguazz.it> <211a35b02193ae79a201d4d567fe1d7a53a979f5.camel@sguazz.it> <639a48d1-815b-33f1-3c9e-cd9ca8ec41b1@csgroup.eu> <498426507489f2c8e32daaf7af1105b5adba552f.camel@sguazz.it> <59de290b-4b6c-a55e-9289-e640473b1382@csgroup.eu> <3558dadc530a60e9e3f958f0d6d4a0f28958ae86.camel@sguazz.it> <8ce38d9bb162268f53a2292a916c44579421e552.camel@sguazz.it> <5158eae8-6809-ae07-0d16-58f2a766f534@csgroup.eu> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.36.4-2 MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-GeoIP: IT X-SRS: Sender address rewritten from to by centrum.lixper.it. X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Hello, Il giorno ven, 21/08/2020 alle 16.03 +0200, Christophe Leroy ha scritto: [...] > Thanks. > > The Oops in the video shows that the issue is at 0x1bcac and msr > value > shows that Instruction MMU is disabled. So this corresponds to > address > 0xc001bcac. In the vmlinux you sent me this address is in > power_save_ppc32_restore() > > This issue is fixed by > https://patchwork.ozlabs.org/project/linuxppc-dev/patch/7bce32ccbab3ba3e3e0f27da6961bf6313df97ed.1581663140.git.christophe.leroy@c-s.fr/ > > > You also said in a previous mail that your original issue also > happens > when CONFIG_VMAP_STACK is not selected. The above bug being linked > to > CONFIG_VMAP_STACK, maybe it would be easier to bisect with > CONFIG_VMAP_STACK unselected. I rebuilt the same kernel that I would otherwise have skipped because of the other bug, and it worked, indeed. I will continue my "bisect quest" unselecting VMAP_STACK in order to speed up the bisecting. Thank you very much, Giuseppe