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=-4.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 5E809C433DF for ; Fri, 31 Jul 2020 09:51:45 +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 342802074B for ; Fri, 31 Jul 2020 09:51:45 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 342802074B 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]:58084 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1k1RhY-0002JP-Gt for qemu-devel@archiver.kernel.org; Fri, 31 Jul 2020 05:51:44 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:46714) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1k1Rgh-0001pw-8g for qemu-devel@nongnu.org; Fri, 31 Jul 2020 05:50:52 -0400 Received: from indium.canonical.com ([91.189.90.7]:40772) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1k1Rge-0006AR-07 for qemu-devel@nongnu.org; Fri, 31 Jul 2020 05:50:51 -0400 Received: from loganberry.canonical.com ([91.189.90.37]) by indium.canonical.com with esmtp (Exim 4.86_2 #2 (Debian)) id 1k1Rgb-0004XT-Eo for ; Fri, 31 Jul 2020 09:50:45 +0000 Received: from loganberry.canonical.com (localhost [127.0.0.1]) by loganberry.canonical.com (Postfix) with ESMTP id 4D0072E80EE for ; Fri, 31 Jul 2020 09:50:45 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Date: Fri, 31 Jul 2020 09:44:41 -0000 From: "Laszlo Ersek \(Red Hat\)" <1888971@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-Information-Type: Public X-Launchpad-Bug-Private: no X-Launchpad-Bug-Security-Vulnerability: no X-Launchpad-Bug-Commenters: lersek nareshgs X-Launchpad-Bug-Reporter: Naresh GS (nareshgs) X-Launchpad-Bug-Modifier: Laszlo Ersek (Red Hat) (lersek) References: <159573587135.29737.8295812528041177661.malonedeb@chaenomeles.canonical.com> Message-Id: <159618868108.4471.3506773723212076959.malone@soybean.canonical.com> Subject: [Bug 1888971] Re: SMI trigger causes hang with multiple cores 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="a24057fea7e4c6a98c0220d5f878da0f3c783699"; Instance="production-secrets-lazr.conf" X-Launchpad-Hash: 4c68b39968661edec649a0358e98d38c18148070 Received-SPF: none client-ip=91.189.90.7; envelope-from=bounces@canonical.com; helo=indium.canonical.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/31 02:41:21 X-ACL-Warn: Detected OS = Linux 3.11 and newer [fuzzy] X-Spam_score_int: -58 X-Spam_score: -5.9 X-Spam_bar: ----- X-Spam_report: (-5.9 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=1, RCVD_IN_DNSWL_HI=-5, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, 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 1888971 <1888971@bugs.launchpad.net> Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" > I guess fundamentally th issue is writing 0xXX in IO port 0xB2 should > trigger SMI handler in all possible core but instead it triggers SMI > only in Core#0. For that, the guest needs to negotiate the "broadcast SMI" feature with QEMU. See commit range 57bb40c9db40..b8bab8eb6934. -- = You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1888971 Title: SMI trigger causes hang with multiple cores Status in QEMU: New Bug description: When using qemu , SMI trigger causes hang/reboot under following conditions: 1. No KVM but there are more than 1 threads (-smp > 1) 2. When using KVM. Info: qemu-system-x86_64 --version QEMU emulator version 2.11.1(Debian 1:2.11+dfsg-1ubuntu7.29) Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers SMI trigger was done by writing 0x00 in IO port 0xB2. Command: No failure in SMI trigger when using the below command: qemu-system-x86_64 -M pc-q35-bionic -smp 1 -bios build/coreboot.rom -ser= ial stdio -hda ../linux.img -m 2048 | tee 1.txt Hang/resets with below commands: qemu-system-x86_64 -M pc-q35-bionic -smp 2 -bios build/coreboot.rom -ser= ial stdio -hda ../linux.img -m 2048 | tee 1.txt sudo qemu-system-x86_64 -M pc-q35-bionic,accel=3Dkvm -smp 1 -bios build/coreboot.rom -serial stdio -hda ../linux.img -m 2048 | tee 1.txt To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1888971/+subscriptions