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=-3.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 76087C433E0 for ; Fri, 5 Feb 2021 10:40:46 +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 0D3B564F3B for ; Fri, 5 Feb 2021 10:40:46 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0D3B564F3B 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]:47608 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l7yXc-0005E0-V3 for qemu-devel@archiver.kernel.org; Fri, 05 Feb 2021 05:40:45 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:50316) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l7ySt-0000OO-38 for qemu-devel@nongnu.org; Fri, 05 Feb 2021 05:35:51 -0500 Received: from indium.canonical.com ([91.189.90.7]:45576) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1l7ySo-0000Lp-L9 for qemu-devel@nongnu.org; Fri, 05 Feb 2021 05:35:50 -0500 Received: from loganberry.canonical.com ([91.189.90.37]) by indium.canonical.com with esmtp (Exim 4.86_2 #2 (Debian)) id 1l7ySl-0002yI-Q7 for ; Fri, 05 Feb 2021 10:35:43 +0000 Received: from loganberry.canonical.com (localhost [127.0.0.1]) by loganberry.canonical.com (Postfix) with ESMTP id 968522E8145 for ; Fri, 5 Feb 2021 10:35:43 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Date: Fri, 05 Feb 2021 10:21:25 -0000 From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= <1914748@bugs.launchpad.net> To: qemu-devel@nongnu.org X-Launchpad-Notification-Type: bug X-Launchpad-Bug: product=qemu; status=New; importance=Undecided; assignee=None; X-Launchpad-Bug-Tags: arm ui X-Launchpad-Bug-Information-Type: Public X-Launchpad-Bug-Private: no X-Launchpad-Bug-Security-Vulnerability: no X-Launchpad-Bug-Commenters: philmd X-Launchpad-Bug-Reporter: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9_=28philmd?= =?utf-8?q?=29?= X-Launchpad-Bug-Modifier: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9_=28philmd?= =?utf-8?q?=29?= Message-Id: <161252048562.1830.10693944288608245237.malonedeb@gac.canonical.com> Subject: [Bug 1914748] [NEW] Confuse error message when KVM can not start requested CPU 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="3d7abcb776ec05aa0a89112accc21bf8b41dfc24"; Instance="production" X-Launchpad-Hash: ba492fe3bacc077c1d0eaad915dddfccca34e384 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=0.25, 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 1914748 <1914748@bugs.launchpad.net> Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Public bug reported: As of commit 1ba089f2255, on Cavium CN8890 (ThunderX cores): $ qemu-system-aarch64 -display none -accel kvm -M virt,gic-version=3D3 -acc= el kvm -cpu cortex-a57 --trace \*kvm_vcpu\* =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 kvm_vcpu_ioctl cpu_index 0, type 0x4020aeae, arg 0xffff9b7f9b18 = qemu-system-aarch64: kvm_init_vcpu: kvm_arch_init_vcpu failed (0): Invalid = argument (same using "-cpu cortex-a53" or cortex-a72). Explanation from Peter Maydell on IRC: > using a specific cpu type will only work with KVM if the host CPU really = is that > exact CPU type, otherwise, use "-cpu host" or "-cpu max" Having a better error description would help to understand the reason. ** Affects: qemu Importance: Undecided Status: New ** Tags: arm ui -- = You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1914748 Title: Confuse error message when KVM can not start requested CPU Status in QEMU: New Bug description: As of commit 1ba089f2255, on Cavium CN8890 (ThunderX cores): $ qemu-system-aarch64 -display none -accel kvm -M virt,gic-version=3D3 -a= ccel kvm -cpu cortex-a57 --trace \*kvm_vcpu\* =C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0 kvm_vcpu_ioctl cpu_index 0, type 0x4020aeae, arg 0xffff9b7f9b18 = qemu-system-aarch64: kvm_init_vcpu: kvm_arch_init_vcpu failed (0): Invali= d argument (same using "-cpu cortex-a53" or cortex-a72). Explanation from Peter Maydell on IRC: > using a specific cpu type will only work with KVM if the host CPU reall= y is that > exact CPU type, otherwise, use "-cpu host" or "-cpu max" Having a better error description would help to understand the reason. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1914748/+subscriptions