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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 573D4EB64DC for ; Sat, 8 Jul 2023 20:56:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229728AbjGHU4B (ORCPT ); Sat, 8 Jul 2023 16:56:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38146 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229436AbjGHU4A (ORCPT ); Sat, 8 Jul 2023 16:56:00 -0400 Received: from mx01.omp.ru (mx01.omp.ru [90.154.21.10]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B690DE4D; Sat, 8 Jul 2023 13:55:59 -0700 (PDT) Received: from [192.168.1.103] (178.176.79.158) by msexch01.omp.ru (10.188.4.12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.986.14; Sat, 8 Jul 2023 23:55:52 +0300 Subject: Re: [PATCH] sh: Avoid using IRQ0 on SH3 and SH4 To: John Paul Adrian Glaubitz , Guenter Roeck , Geert Uytterhoeven CC: Yoshinori Sato , Rich Felker , , References: <7b2c0d812280afaefee0c70a9aea00a0fcf84e3a.camel@physik.fu-berlin.de> <29ad9e3d1a83d03190626ba66b7d71c833776982.camel@physik.fu-berlin.de> From: Sergey Shtylyov Organization: Open Mobile Platform Message-ID: <941c0ebf-d55a-22f1-72d4-1397f44d3c3a@omp.ru> Date: Sat, 8 Jul 2023 23:55:52 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 MIME-Version: 1.0 In-Reply-To: <29ad9e3d1a83d03190626ba66b7d71c833776982.camel@physik.fu-berlin.de> Content-Type: text/plain; charset="utf-8" Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [178.176.79.158] X-ClientProxiedBy: msexch01.omp.ru (10.188.4.12) To msexch01.omp.ru (10.188.4.12) X-KSE-ServerInfo: msexch01.omp.ru, 9 X-KSE-AntiSpam-Interceptor-Info: scan successful X-KSE-AntiSpam-Version: 5.9.59, Database issued on: 07/08/2023 20:43:46 X-KSE-AntiSpam-Status: KAS_STATUS_NOT_DETECTED X-KSE-AntiSpam-Method: none X-KSE-AntiSpam-Rate: 59 X-KSE-AntiSpam-Info: Lua profiles 178491 [Jul 07 2023] X-KSE-AntiSpam-Info: Version: 5.9.59.0 X-KSE-AntiSpam-Info: Envelope from: s.shtylyov@omp.ru X-KSE-AntiSpam-Info: LuaCore: 520 520 ccb018a655251011855942a2571029252d3d69a2 X-KSE-AntiSpam-Info: {rep_avail} X-KSE-AntiSpam-Info: {Tracking_arrow_text} X-KSE-AntiSpam-Info: {Tracking_from_domain_doesnt_match_to} X-KSE-AntiSpam-Info: {relay has no DNS name} X-KSE-AntiSpam-Info: {SMTP from is not routable} X-KSE-AntiSpam-Info: {Found in DNSBL: 178.176.79.158 in (user) b.barracudacentral.org} X-KSE-AntiSpam-Info: 178.176.79.158:7.1.2,7.4.1,7.7.3;omp.ru:7.1.1;127.0.0.199:7.1.2;d41d8cd98f00b204e9800998ecf8427e.com:7.1.1 X-KSE-AntiSpam-Info: {iprep_blacklist} X-KSE-AntiSpam-Info: ApMailHostAddress: 178.176.79.158 X-KSE-AntiSpam-Info: {DNS response errors} X-KSE-AntiSpam-Info: Rate: 59 X-KSE-AntiSpam-Info: Status: not_detected X-KSE-AntiSpam-Info: Method: none X-KSE-AntiSpam-Info: Auth:dmarc=temperror header.from=omp.ru;spf=temperror smtp.mailfrom=omp.ru;dkim=none X-KSE-Antiphishing-Info: Clean X-KSE-Antiphishing-ScanningType: Heuristic X-KSE-Antiphishing-Method: None X-KSE-Antiphishing-Bases: 07/08/2023 20:48:00 X-KSE-Antivirus-Interceptor-Info: scan successful X-KSE-Antivirus-Info: Clean, bases: 7/8/2023 6:08:00 PM X-KSE-Attachment-Filter-Triggered-Rules: Clean X-KSE-Attachment-Filter-Triggered-Filters: Clean X-KSE-BulkMessagesFiltering-Scan-Result: InTheLimit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 7/6/23 8:41 PM, John Paul Adrian Glaubitz wrote: >> I tried rts7751r2dplus_defconfig with no modifications and the following minimized >> qemu command line. >> >> qemu-system-sh4 -M r2d -kernel arch/sh/boot/zImage -serial null -serial stdio -nographic -monitor null >> >> This hangs after "heartbeat: version 0.1.2 loaded", so it doesn't >> even get to the point where it would try to load a root file system. >> After reverting this patch, I get >> ---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) ]--- >> as expected. >> >> I tried with qemu version 6.2, 7.1, 7.2, and 8.0. > > I'm curios to hear what Geert and Sergey have to say. Sorry for a late reaction, I was busy reviewing some PATA patches and a static analyzer work here, at OMP... > I hope we don't have to revert this :-(. I think we should be able to find the root cause soon. I prolly should learn Qemu some day... :-) > Adrian MBR, Sergey