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=-8.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 4127FC433DB for ; Sat, 20 Feb 2021 11:56:46 +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 A890864EDB for ; Sat, 20 Feb 2021 11:56:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A890864EDB Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bugs.launchpad.net Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:48844 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lDQsO-0003ew-JU for qemu-devel@archiver.kernel.org; Sat, 20 Feb 2021 06:56:44 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:51898) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lDQrR-0003Cy-2a for qemu-devel@nongnu.org; Sat, 20 Feb 2021 06:55:45 -0500 Received: from indium.canonical.com ([91.189.90.7]:55280) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1lDQrO-0001wW-RG for qemu-devel@nongnu.org; Sat, 20 Feb 2021 06:55:44 -0500 Received: from loganberry.canonical.com ([91.189.90.37]) by indium.canonical.com with esmtp (Exim 4.86_2 #2 (Debian)) id 1lDQrM-0005TG-PR for ; Sat, 20 Feb 2021 11:55:40 +0000 Received: from loganberry.canonical.com (localhost [127.0.0.1]) by loganberry.canonical.com (Postfix) with ESMTP id 9BEBE2E8100 for ; Sat, 20 Feb 2021 11:55:40 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Date: Sat, 20 Feb 2021 11:49:20 -0000 From: Stefan Weil <1916112@bugs.launchpad.net> To: qemu-devel@nongnu.org X-Launchpad-Notification-Type: bug X-Launchpad-Bug: product=qemu; status=Confirmed; importance=Undecided; assignee=None; X-Launchpad-Bug-Tags: tcg X-Launchpad-Bug-Information-Type: Public X-Launchpad-Bug-Private: no X-Launchpad-Bug-Security-Vulnerability: no X-Launchpad-Bug-Commenters: pmaydell rreddy78 X-Launchpad-Bug-Reporter: Ravishankar (rreddy78) X-Launchpad-Bug-Modifier: Stefan Weil (ubuntu-weilnetz) References: <161371415849.8154.11815373638536869361.malonedeb@gac.canonical.com> Message-Id: <161382176099.29500.1071258121723291122.launchpad@soybean.canonical.com> Subject: [Bug 1916112] Re: Illegal instruction crash of QEMU on Jetson Nano X-Launchpad-Message-Rationale: Subscriber (QEMU) @qemu-devel-ml X-Launchpad-Message-For: qemu-devel-ml Precedence: bulk X-Generated-By: Launchpad (canonical.com); Revision="bbfee60eef9f7fd8d30b24b3f53e75656e4d5fb0"; Instance="production" X-Launchpad-Hash: 802ca166196cd81b5f930b0fa71113b4c1009a1b Received-SPF: none client-ip=91.189.90.7; envelope-from=bounces@canonical.com; helo=indium.canonical.com X-Spam_score_int: -65 X-Spam_score: -6.6 X-Spam_bar: ------ X-Spam_report: (-6.6 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.249, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Bug 1916112 <1916112@bugs.launchpad.net> Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" ** Changed in: qemu Status: New =3D> Confirmed -- = You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1916112 Title: Illegal instruction crash of QEMU on Jetson Nano Status in QEMU: Confirmed Bug description: I have a jetson nano (arm64 SBC) and I want to check the native emulation performance of Raspbian Buster. I used the info available here: https://github.com/dhruvvyas90/qemu-rpi-kernel/tree/master/native- emuation I have Xubuntut 20.04 with KVM enabled kernel running on the Jetson Nano However QEMU crashes with "Illegal Instruction" during kernel boot. I have a built latest QEMU from sources with following configuration ./configure --prefix=3D/usr/local --target-list=3Daarch64-softmmu,arm- softmmu --enable-guest-agent --enable-vnc --enable-vnc-jpeg --enable-vnc-png --enable-kvm --enable-spice --enable-sdl --enable-gtk --enable-virglrenderer --enable-opengl qemu-system-aarch64 --version QEMU emulator version 5.2.50 (v5.2.0-1731-g5b19cb63d9) When I run as follows: ../build/qemu-system-aarch64 -M raspi3 -append "rw earlyprintk loglevel=3D8 console=3DttyAMA0,115200 dwc_otg.lpm= _enable=3D0 root=3D/dev/mmcblk0p2 rootdelay=3D1" -dtb ./bcm2710-rpi-3-b-plus.dtb -sd /media/96747D21747D0571/JetsonNano/2020-08-20-raspios-buster-armhf-fu= ll.qcow2 -kernel ./kernel8.img -m 1G -smp 4 -serial stdio -usb -device usb-mouse -device usb-kbd I get : [ 74.994834] systemd[1]: Condition check resulted in FUSE Control File Sy= stem being skipped. [ 76.281274] systemd[1]: Starting Apply Kernel Variables... Starting Apply Kernel Variables... Illegal instruction (core dumped) When I use GDB I see this: Thread 8 "qemu-system-aar" received signal SIGILL, Illegal instruction. [Switching to Thread 0x7fad7f9ba0 (LWP 28037)] 0x0000007f888ac690 in code_gen_buffer () (gdb) bt #0 0x0000007f888ac690 in code_gen_buffer () #1 0x0000005555d7c038 in cpu_tb_exec (tb_exit=3D, itb=3D, cpu=3D0x7fb4502= c40) at ../accel/tcg/cpu-exec.c:191 #2 cpu_loop_exec_tb (tb_exit=3D, last_tb=3D, tb=3D, cpu=3D0x7fb4502c40) at ../accel/tcg/cpu-exec.c:708 #3 cpu_exec (cpu=3Dcpu@entry=3D0x7fb4502c40) at ../accel/tcg/cpu-exec.c:8= 19 .. I have just two questions: Is this a problem with QEMU or is there anything specific build or options I need to use. Any specific version of QEMU should be used ? Why is TCG used as the accelerator when KVM is present. Is it possible and how to use KVM ? If I enabled the KVM then I get this error: ../build/qemu-system-aarch64 -M raspi3 -enable-kvm -append "rw earlyprint= k loglevel=3D8 console=3DttyAMA0,115200 dwc_otg.lpm_enable=3D0 root=3D/dev/= mmcblk0p2 rootdelay=3D1" -dtb ./bcm2710-rpi-3-b-plus.dtb -sd /media/96747D2= 1747D0571/JetsonNano/2020-08-20-raspios-buster-armhf-full.qcow2 -kernel ./k= ernel8.img -m 1G -smp 4 -serial stdio -usb -device usb-mouse -device usb-kbd WARNING: Image format was not specified for '/media/96747D21747D0571/Jets= onNano/2020-08-20-raspios-buster-armhf-full.img' and probing guessed raw. Automatically detecting the format is dangerous for raw images, = write operations on block 0 will be restricted. Specify the 'raw' format explicitly to remove the restrictions. qemu-system-aarch64: ../softmmu/physmem.c:750: cpu_address_space_init: As= sertion `asidx =3D=3D 0 || !kvm_enabled()' failed. Thanks a lot. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1916112/+subscriptions