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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 95121C76195 for ; Tue, 16 Jul 2019 18:42:46 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 798FE21743 for ; Tue, 16 Jul 2019 18:42:46 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 798FE21743 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:51706 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hnSPV-0004u3-Hu for qemu-devel@archiver.kernel.org; Tue, 16 Jul 2019 14:42:45 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:35449) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hnSPL-0004Vf-Pa for qemu-devel@nongnu.org; Tue, 16 Jul 2019 14:42:36 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hnSPK-0006qV-Po for qemu-devel@nongnu.org; Tue, 16 Jul 2019 14:42:35 -0400 Received: from mx1.redhat.com ([209.132.183.28]:50888) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hnSPK-0006qC-J9 for qemu-devel@nongnu.org; Tue, 16 Jul 2019 14:42:34 -0400 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 7EF8F7FDFB; Tue, 16 Jul 2019 18:42:33 +0000 (UTC) Received: from lacos-laptop-7.usersys.redhat.com (ovpn-117-187.ams2.redhat.com [10.36.117.187]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3637E101E1CD; Tue, 16 Jul 2019 18:42:29 +0000 (UTC) To: Peter Maydell References: <20181102171638.24069-1-peter.maydell@linaro.org> <20181102171638.24069-9-peter.maydell@linaro.org> <3e3d2018-3993-f651-8e94-5bea612bd776@redhat.com> <417cd887-aec4-d8ba-1dd2-810bc4c04977@redhat.com> From: Laszlo Ersek Message-ID: <8d06b8f2-7ee8-a77a-81d7-3219d5e43c45@redhat.com> Date: Tue, 16 Jul 2019 20:42:29 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.27]); Tue, 16 Jul 2019 18:42:33 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: Re: [Qemu-devel] [PULL 08/10] target/arm: Conditionalize some asserts on aarch32 support X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Richard Henderson , =?UTF-8?Q?Alex_Benn=c3=a9e?= , QEMU Developers , =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 07/16/19 18:59, Peter Maydell wrote: > On Tue, 16 Jul 2019 at 17:51, Laszlo Ersek wrote: >> The issue still reproduces, so it makes sense for me to look at the host >> kernel version... Well, I'm afraid it won't help much, for an upstream >> investigation: >> >> 4.14.0-115.8.2.el7a.aarch64 >> >> This is the latest released kernel from "Red Hat Enterprise Linux for >> ARM 64 7". > > OK. (I'm using 4.15.0-51-generic from ubuntu). > > Could you run with QEMU under gdb, and when it hits the > assertion go back up a stack frame to the arm_cpu_realizefn() > frame, and then "print /x cpu->isar" ? That should show us > what we think we've got as ID registers from the kernel. > (You might need to build QEMU with --enable-debug to get > useful enough debug info to do that, not sure.) (My qemu build script always builds QEMU in two configs, the difference being --prefix and --enable-debug.) This is what I got: (gdb) frame 4 #4 0x00000000006a063c in arm_cpu_realizefn (dev=0x1761140, errp=0xffffffffe540) at .../qemu/target/arm/cpu.c:1159 1159 assert(no_aa32 || cpu_isar_feature(arm_div, cpu)); (gdb) print /x cpu->isar $1 = {id_isar0 = 0x0, id_isar1 = 0x0, id_isar2 = 0x0, id_isar3 = 0x0, id_isar4 = 0x0, id_isar5 = 0x0, id_isar6 = 0x0, mvfr0 = 0x0, mvfr1 = 0x0, mvfr2 = 0x0, id_aa64isar0 = 0x0, id_aa64isar1 = 0x0, id_aa64pfr0 = 0x11, id_aa64pfr1 = 0x0, id_aa64mmfr0 = 0x0, id_aa64mmfr1 = 0x0} Thanks! Laszlo