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=-1.3 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED, URIBL_SBL,URIBL_SBL_A,USER_AGENT_MUTT autolearn=ham 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 CF3A1C04EB9 for ; Mon, 15 Oct 2018 22:34:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 78A2C2089D for ; Mon, 15 Oct 2018 22:34:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="cRYD5k2c" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 78A2C2089D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=roeck-us.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727105AbeJPGVl (ORCPT ); Tue, 16 Oct 2018 02:21:41 -0400 Received: from mail-pf1-f194.google.com ([209.85.210.194]:33960 "EHLO mail-pf1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726430AbeJPGVl (ORCPT ); Tue, 16 Oct 2018 02:21:41 -0400 Received: by mail-pf1-f194.google.com with SMTP id f78-v6so4626407pfe.1; Mon, 15 Oct 2018 15:34:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=5VJjn0qxh8BGzPUn1BkdZ8LH2wng3UZRuYsFxbKuJ20=; b=cRYD5k2c6dLXs9z+tyPBRUg8es8L9RQhpJ2Rsp2U4urq8rI3ukNN2/ZM6+j1P2O3lM 2iHTDeNoWQUmgaUsCABZrz9IyLTTa3M7h6X9ZRQAodU7tkQvuCki0xT21gbNImJ7jLG6 rtpuFu5iiJmnluz9IMYZTdcfZV88M/Wkb7n87vYDHjg4LFfAXuA+KzXQsvkiC0EGpj0M d02dMg9WDVRuYoe2AfHWhTMao5/TsI1UxsbDprZpt4fZRDy6N7+uFeG0ZtOj9cvPtbP4 uwkA/IOKdC0Y4k0hdR9dkGtBl5T6G3Pz0WiKN6eA4zZJ0DmrxOctVvfEdaEE104PnWE2 cJGg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :references:mime-version:content-disposition:in-reply-to:user-agent; bh=5VJjn0qxh8BGzPUn1BkdZ8LH2wng3UZRuYsFxbKuJ20=; b=MKRfhA1gDd3EUV95J9tmBOQ6m5ROZC4xh3XwMbUlJJH1nGa8HkcNzc+vRaJxoo+d08 hUDd4wnToRWUNJv4xDaXTIG70rqHkzBsMC4Hmrw6iz+HFMwlFSdnlGTeCqSMorO9IN4T XsEBjn0Dk9aPnnUPm9dehxgZhTLMCeT9EwMkpA//vg6Og/cPc+PptALuoxANOyBM8lHa 9fp+I1mCW4q6gusqqX6Fyi+j66vrs9hGnx5cX0U9aFRb5bIM5zrDp4RS1ahWHvLl0XLT JG6trmhV7gGM93EprTVIP+CTsNkSAJXq8w6zugjbqpRT1x7cRTMiWyo5S+u3q4pzxM/1 O09Q== X-Gm-Message-State: ABuFfoj1pwIv3ouyx8R8ZZmSM2JtqkzhMOhJZT42QYVvwXZrFkbuWhxq RekihLNGrbIwj2m6FitpkV4= X-Google-Smtp-Source: ACcGV63cMBgvKYN7sxzc1vGh22K9xrH+kbs35MlzlFVUFKbNt4Ouu/j2jifAIxh5pCee05rslR1A6A== X-Received: by 2002:a62:1e42:: with SMTP id e63-v6mr11386760pfe.149.1539642866206; Mon, 15 Oct 2018 15:34:26 -0700 (PDT) Received: from localhost (108-223-40-66.lightspeed.sntcca.sbcglobal.net. [108.223.40.66]) by smtp.gmail.com with ESMTPSA id p4-v6sm15016491pfg.188.2018.10.15.15.34.24 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 15 Oct 2018 15:34:25 -0700 (PDT) Date: Mon, 15 Oct 2018 15:34:24 -0700 From: Guenter Roeck To: Rob Herring Cc: Stephen Rothwell , linux-next , "linux-kernel@vger.kernel.org" , Michael Ellerman , Benjamin Herrenschmidt , linuxppc-dev Subject: Re: linux-next: Tree for Oct 15 Message-ID: <20181015223424.GA31977@roeck-us.net> References: <20181015192546.15faf3a1@canb.auug.org.au> <20181015182637.GA16445@roeck-us.net> <20181016071240.3f62816d@canb.auug.org.au> <20181015211815.GA24993@roeck-us.net> <20181015221053.GA19822@roeck-us.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Oct 15, 2018 at 05:13:08PM -0500, Rob Herring wrote: > On Mon, Oct 15, 2018 at 5:10 PM Guenter Roeck wrote: > > > > On Mon, Oct 15, 2018 at 04:48:27PM -0500, Rob Herring wrote: > > > On Mon, Oct 15, 2018 at 4:18 PM Guenter Roeck wrote: > > > > > > > > On Mon, Oct 15, 2018 at 03:35:12PM -0500, Rob Herring wrote: > > > > > On Mon, Oct 15, 2018 at 3:12 PM Stephen Rothwell wrote: > > > > > > > > > > > > Hi Guenter, > > > > > > > > > > > > [Just cc'ing the PPC and devicetree folks] > > > > > > > > > > > > On Mon, 15 Oct 2018 11:26:37 -0700 Guenter Roeck wrote: > > > > > > > > > > > > > > On Mon, Oct 15, 2018 at 07:25:46PM +1100, Stephen Rothwell wrote: > > > > > > > > > > > > > > > > My qemu boots of a powerpc pseries_le_defconfig kernel failed today. > > > > > > > > > > > > > > Same here. Interestingly, this only affects little endian pseries > > > > > > > boots; big endian works fine. I'll try to bisect later. > > > > > > > > > > > > > > ALl ppc qemu tests (including big endian pseries) also generate a warning. > > > > > > > > > > > > > > WARNING: CPU: 0 PID: 0 at mm/memblock.c:1301 .memblock_alloc_range_nid+0x20/0x68 > > > > > > > Modules linked in: > > > > > > > CPU: 0 PID: 0 Comm: swapper Not tainted 4.19.0-rc7-next-20181015 #1 > > > > > > > NIP: c000000000f99198 LR: c000000000f99490 CTR: c000000000bb8364 > > > > > > > REGS: c000000001217a78 TRAP: 0700 Not tainted (4.19.0-rc7-next-20181015) > > > > > > > MSR: 0000000080021000 CR: 24000422 XER: 20000000 > > > > > > > IRQMASK: 1 > > > > > > > GPR00: c000000000f99490 c000000001217d00 c00000000121a500 00000000000000c0 > > > > > > > GPR04: 0000000000000000 0000000000000000 0000000000000000 ffffffffffffffff > > > > > > > GPR08: 0000000000000000 00000000000000c0 0000000000000018 00000000000000b7 > > > > > > > GPR12: 0000000000000040 c000000000fe7840 0000000000000000 0000000000000000 > > > > > > > GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 > > > > > > > GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 > > > > > > > GPR24: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 > > > > > > > GPR28: c000000000000304 c000000001262088 00000000000000c0 c000000000fea500 > > > > > > > NIP [c000000000f99198] .memblock_alloc_range_nid+0x20/0x68 > > > > > > > LR [c000000000f99490] .memblock_alloc_base+0x18/0x48 > > > > > > > Call Trace: > > > > > > > [c000000001217d00] [c000000002a00000] 0xc000000002a00000 (unreliable) > > > > > > > [c000000001217d80] [c000000000f99490] .memblock_alloc_base+0x18/0x48 > > > > > > > [c000000001217df0] [c000000000f7a274] .allocate_paca_ptrs+0x3c/0x74 > > > > > > > [c000000001217e70] [c000000000f78bf0] .early_init_devtree+0x288/0x320 > > > > > > > [c000000001217f10] [c000000000f79b6c] .early_setup+0x80/0x130 > > > > > > > [c000000001217f90] [c000000000000528] start_here_multiplatform+0x68/0x80 > > > > > > > > > > > > > > > > > > > > > sparc images crash, starting with next-20181009. Bisect with > > > > > > > next-201810112 points to the merge of devicetree/for-next, though > > > > > > > devicetree/for-next itself does not have the problem (bisect log > > > > > > > attached below). The crash is in devicetree code. > > > > > > > > > > > > > > Crash logs: > > > > > > > https://kerneltests.org/builders/qemu-sparc64-next/builds/981/steps/qemubuildcommand_1/logs/stdio > > > > > > > https://kerneltests.org/builders/qemu-sparc-next/builds/975/steps/qemubuildcommand_1/logs/stdio > > > > > > > > > > The sparc crash appears to be related to changes I made. Looking into it. > > > > > > > > > > > > > Let me know if you need me to test anything or do some debugging. > > > > > > Well, I'm not having any luck getting sparc qemu to work. Here's what > > > I'm trying with a sparc32_defconfig kernel: > > > > > > $ qemu-system-sparc -kernel .build-sparc/vmlinux -M SS-4 -nographic -m > > > 256 -no-reboot > > > rom: requested regions overlap (rom phdr #0: .build-sparc/vmlinux. > > > free=0x000000000000057a, addr=0x0000000000000000) > > > qemu-system-sparc: rom check and register reset failed > > > > > > > What is your qemu version ? > > 2.11 from ubuntu 18.04: > QEMU emulator version 2.11.1(Debian 1:2.11+dfsg-1ubuntu7.5) > Update: Works for me with QEMU emulator version 2.11.93 (Debian 1:2.12~rc3+dfsg-1) with the following command line. qemu-system-sparc -M SS-4 -kernel arch/sparc/boot/zImage -no-reboot \ -drive file=hda.sqf,if=scsi,format=raw \ -append 'root=/dev/sda rw init=/sbin/init.sh panic=1 console=ttyS0' \ -nographic -monitor none I have to enable DEVTMPFS and SQUASHFS for my root file system to work, but otherwise it is sparc32_defconfig. Guenter 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=-1.3 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED, URIBL_SBL,URIBL_SBL_A,USER_AGENT_MUTT autolearn=unavailable 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 57249C04EB9 for ; Mon, 15 Oct 2018 22:36:57 +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 BBC49208B3 for ; Mon, 15 Oct 2018 22:36:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="cRYD5k2c" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BBC49208B3 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=roeck-us.net Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 42YtbV54P9zF3Ry for ; Tue, 16 Oct 2018 09:36:54 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=roeck-us.net Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="cRYD5k2c"; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=gmail.com (client-ip=2607:f8b0:4864:20::542; helo=mail-pg1-x542.google.com; envelope-from=groeck7@gmail.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=roeck-us.net Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="cRYD5k2c"; dkim-atps=neutral Received: from mail-pg1-x542.google.com (mail-pg1-x542.google.com [IPv6:2607:f8b0:4864:20::542]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 42YtXh2JwtzF37q for ; Tue, 16 Oct 2018 09:34:28 +1100 (AEDT) Received: by mail-pg1-x542.google.com with SMTP id 80-v6so9820803pgh.10 for ; Mon, 15 Oct 2018 15:34:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=5VJjn0qxh8BGzPUn1BkdZ8LH2wng3UZRuYsFxbKuJ20=; b=cRYD5k2c6dLXs9z+tyPBRUg8es8L9RQhpJ2Rsp2U4urq8rI3ukNN2/ZM6+j1P2O3lM 2iHTDeNoWQUmgaUsCABZrz9IyLTTa3M7h6X9ZRQAodU7tkQvuCki0xT21gbNImJ7jLG6 rtpuFu5iiJmnluz9IMYZTdcfZV88M/Wkb7n87vYDHjg4LFfAXuA+KzXQsvkiC0EGpj0M d02dMg9WDVRuYoe2AfHWhTMao5/TsI1UxsbDprZpt4fZRDy6N7+uFeG0ZtOj9cvPtbP4 uwkA/IOKdC0Y4k0hdR9dkGtBl5T6G3Pz0WiKN6eA4zZJ0DmrxOctVvfEdaEE104PnWE2 cJGg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :references:mime-version:content-disposition:in-reply-to:user-agent; bh=5VJjn0qxh8BGzPUn1BkdZ8LH2wng3UZRuYsFxbKuJ20=; b=mmkPlclARZlDeMVpvsHRJ4CVTSodSuuVjujfBjcrtq3SwH7qbcidHPtnYi7PbCSzUl HNcN0EbUQMzB4fTbqahjqHNtpsa/pJqmtksDV5Dx4w8hsF1PjxZIpisZuvAyitUph6Xq zwnBzRDEkai4gJjyJvUJ697Z1JkHQal7pahmPQ9ESXB60gvntTV791l2MmyzhEos+j2I BHONDP6rWBXZ1HGK2IMqoVrkWpYgBt2o8XSearoS9OhyEotixu7r16O0g+KNOPtGDglb qz8R4t/j8G6frDrtCDdZDTPsZLkPYNHQs/Z06wcWRCV4Xg3SE5Tgf3pRC2a2g3zPaYm0 v24A== X-Gm-Message-State: ABuFfog56iytLvq2lgBIyjMbd7HY3qHQ/cL45V+QBqUYmbRITtZ1V/70 PZJJskf5H8HJ9MHVpVUvkaE= X-Google-Smtp-Source: ACcGV63cMBgvKYN7sxzc1vGh22K9xrH+kbs35MlzlFVUFKbNt4Ouu/j2jifAIxh5pCee05rslR1A6A== X-Received: by 2002:a62:1e42:: with SMTP id e63-v6mr11386760pfe.149.1539642866206; Mon, 15 Oct 2018 15:34:26 -0700 (PDT) Received: from localhost (108-223-40-66.lightspeed.sntcca.sbcglobal.net. [108.223.40.66]) by smtp.gmail.com with ESMTPSA id p4-v6sm15016491pfg.188.2018.10.15.15.34.24 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 15 Oct 2018 15:34:25 -0700 (PDT) Date: Mon, 15 Oct 2018 15:34:24 -0700 From: Guenter Roeck To: Rob Herring Subject: Re: linux-next: Tree for Oct 15 Message-ID: <20181015223424.GA31977@roeck-us.net> References: <20181015192546.15faf3a1@canb.auug.org.au> <20181015182637.GA16445@roeck-us.net> <20181016071240.3f62816d@canb.auug.org.au> <20181015211815.GA24993@roeck-us.net> <20181015221053.GA19822@roeck-us.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.24 (2015-08-30) 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: , Cc: Stephen Rothwell , "linux-kernel@vger.kernel.org" , linux-next , linuxppc-dev Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Mon, Oct 15, 2018 at 05:13:08PM -0500, Rob Herring wrote: > On Mon, Oct 15, 2018 at 5:10 PM Guenter Roeck wrote: > > > > On Mon, Oct 15, 2018 at 04:48:27PM -0500, Rob Herring wrote: > > > On Mon, Oct 15, 2018 at 4:18 PM Guenter Roeck wrote: > > > > > > > > On Mon, Oct 15, 2018 at 03:35:12PM -0500, Rob Herring wrote: > > > > > On Mon, Oct 15, 2018 at 3:12 PM Stephen Rothwell wrote: > > > > > > > > > > > > Hi Guenter, > > > > > > > > > > > > [Just cc'ing the PPC and devicetree folks] > > > > > > > > > > > > On Mon, 15 Oct 2018 11:26:37 -0700 Guenter Roeck wrote: > > > > > > > > > > > > > > On Mon, Oct 15, 2018 at 07:25:46PM +1100, Stephen Rothwell wrote: > > > > > > > > > > > > > > > > My qemu boots of a powerpc pseries_le_defconfig kernel failed today. > > > > > > > > > > > > > > Same here. Interestingly, this only affects little endian pseries > > > > > > > boots; big endian works fine. I'll try to bisect later. > > > > > > > > > > > > > > ALl ppc qemu tests (including big endian pseries) also generate a warning. > > > > > > > > > > > > > > WARNING: CPU: 0 PID: 0 at mm/memblock.c:1301 .memblock_alloc_range_nid+0x20/0x68 > > > > > > > Modules linked in: > > > > > > > CPU: 0 PID: 0 Comm: swapper Not tainted 4.19.0-rc7-next-20181015 #1 > > > > > > > NIP: c000000000f99198 LR: c000000000f99490 CTR: c000000000bb8364 > > > > > > > REGS: c000000001217a78 TRAP: 0700 Not tainted (4.19.0-rc7-next-20181015) > > > > > > > MSR: 0000000080021000 CR: 24000422 XER: 20000000 > > > > > > > IRQMASK: 1 > > > > > > > GPR00: c000000000f99490 c000000001217d00 c00000000121a500 00000000000000c0 > > > > > > > GPR04: 0000000000000000 0000000000000000 0000000000000000 ffffffffffffffff > > > > > > > GPR08: 0000000000000000 00000000000000c0 0000000000000018 00000000000000b7 > > > > > > > GPR12: 0000000000000040 c000000000fe7840 0000000000000000 0000000000000000 > > > > > > > GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 > > > > > > > GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 > > > > > > > GPR24: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 > > > > > > > GPR28: c000000000000304 c000000001262088 00000000000000c0 c000000000fea500 > > > > > > > NIP [c000000000f99198] .memblock_alloc_range_nid+0x20/0x68 > > > > > > > LR [c000000000f99490] .memblock_alloc_base+0x18/0x48 > > > > > > > Call Trace: > > > > > > > [c000000001217d00] [c000000002a00000] 0xc000000002a00000 (unreliable) > > > > > > > [c000000001217d80] [c000000000f99490] .memblock_alloc_base+0x18/0x48 > > > > > > > [c000000001217df0] [c000000000f7a274] .allocate_paca_ptrs+0x3c/0x74 > > > > > > > [c000000001217e70] [c000000000f78bf0] .early_init_devtree+0x288/0x320 > > > > > > > [c000000001217f10] [c000000000f79b6c] .early_setup+0x80/0x130 > > > > > > > [c000000001217f90] [c000000000000528] start_here_multiplatform+0x68/0x80 > > > > > > > > > > > > > > > > > > > > > sparc images crash, starting with next-20181009. Bisect with > > > > > > > next-201810112 points to the merge of devicetree/for-next, though > > > > > > > devicetree/for-next itself does not have the problem (bisect log > > > > > > > attached below). The crash is in devicetree code. > > > > > > > > > > > > > > Crash logs: > > > > > > > https://kerneltests.org/builders/qemu-sparc64-next/builds/981/steps/qemubuildcommand_1/logs/stdio > > > > > > > https://kerneltests.org/builders/qemu-sparc-next/builds/975/steps/qemubuildcommand_1/logs/stdio > > > > > > > > > > The sparc crash appears to be related to changes I made. Looking into it. > > > > > > > > > > > > > Let me know if you need me to test anything or do some debugging. > > > > > > Well, I'm not having any luck getting sparc qemu to work. Here's what > > > I'm trying with a sparc32_defconfig kernel: > > > > > > $ qemu-system-sparc -kernel .build-sparc/vmlinux -M SS-4 -nographic -m > > > 256 -no-reboot > > > rom: requested regions overlap (rom phdr #0: .build-sparc/vmlinux. > > > free=0x000000000000057a, addr=0x0000000000000000) > > > qemu-system-sparc: rom check and register reset failed > > > > > > > What is your qemu version ? > > 2.11 from ubuntu 18.04: > QEMU emulator version 2.11.1(Debian 1:2.11+dfsg-1ubuntu7.5) > Update: Works for me with QEMU emulator version 2.11.93 (Debian 1:2.12~rc3+dfsg-1) with the following command line. qemu-system-sparc -M SS-4 -kernel arch/sparc/boot/zImage -no-reboot \ -drive file=hda.sqf,if=scsi,format=raw \ -append 'root=/dev/sda rw init=/sbin/init.sh panic=1 console=ttyS0' \ -nographic -monitor none I have to enable DEVTMPFS and SQUASHFS for my root file system to work, but otherwise it is sparc32_defconfig. Guenter