From patchwork Fri Feb 19 17:38:47 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= X-Patchwork-Id: 12095933 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=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT 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 3EEABC433E6 for ; Fri, 19 Feb 2021 17:41:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 15ACF64DA1 for ; Fri, 19 Feb 2021 17:41:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230001AbhBSRl3 (ORCPT ); Fri, 19 Feb 2021 12:41:29 -0500 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:36713 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229991AbhBSRlX (ORCPT ); Fri, 19 Feb 2021 12:41:23 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1613756396; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=LKRfXZiJfNSqbVRL/SaOx1v+Z64xt5w41cSycQqYFFE=; b=GTGuLyHKA7H+YnH3Uu3iTtQ+U1LQZZw8r8pYOHnpZIL03nQP/p49zvNtTr6DDEs+FfO339 MlUeC5k7DORyMQkrLc5Ffofic0/gm+cTparvBsgSG96kk7xy4dAxk/7soqzmcnKrFr6BRW FxV1xpM60TxLOKkb6qZSbqJXVYTiFtQ= Received: from mail-wr1-f72.google.com (mail-wr1-f72.google.com [209.85.221.72]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-476-nhdTZ39JP9Wyt18Uquy96w-1; Fri, 19 Feb 2021 12:39:54 -0500 X-MC-Unique: nhdTZ39JP9Wyt18Uquy96w-1 Received: by mail-wr1-f72.google.com with SMTP id x1so2728756wrg.22 for ; Fri, 19 Feb 2021 09:39:54 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=LKRfXZiJfNSqbVRL/SaOx1v+Z64xt5w41cSycQqYFFE=; b=Pxo/OR7j/DWdLzgDfTQVE7vDkehZwpKUZEWpVMQrfm667lYFZIDgpFWpUG9vZR+gf9 Xs7jnZVyVJBzoctp06XI3kp4v3NxswWEWT0TLVjs5zwsIBLEKfu9NIB7FC8G9Jtai64M GyV6UTXBPolVYCmD+h9CCsghJM2N5tMdA77q/cFUn2e17DAGxTcnEPZcNYGivYCsn+kW 9JJF47oWUPR7gdu+fuTYocgrjizdvnKNooUXbk+ARHrOX0EZ5fHp4urQxyB0tFsz/Bx1 ZVElgDpWqe9/5DiSdFluajLr4/VNKQ+CnCwA7nG3aQU3xU+wn3g4jkoMavHGCWUKY/r5 KEpw== X-Gm-Message-State: AOAM530HlF7zMdm9joF31Qug7y1skiZTDQrB/+02PXHXXPrVRGvgqP9z 309fWWt6OMaoe+V9mAWJzoLUFzcxT2qOsjBgB1cKb9PLJlZYJv+4UWC1sQ3IURvBVyBDr/kCfZP 3DKaqYZ3oz2mx X-Received: by 2002:a1c:4c03:: with SMTP id z3mr9342129wmf.82.1613756393456; Fri, 19 Feb 2021 09:39:53 -0800 (PST) X-Google-Smtp-Source: ABdhPJx2yrJUDqwa1ymG/2RErXjJWx3WIzkQzNQF90+7ijmcN7yAwa2G2hjcHhwa/T8ilbMl1bPCyw== X-Received: by 2002:a1c:4c03:: with SMTP id z3mr9342087wmf.82.1613756393314; Fri, 19 Feb 2021 09:39:53 -0800 (PST) Received: from localhost.localdomain (68.red-83-57-175.dynamicip.rima-tde.net. [83.57.175.68]) by smtp.gmail.com with ESMTPSA id r7sm15304999wre.25.2021.02.19.09.39.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 19 Feb 2021 09:39:52 -0800 (PST) From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: Aurelien Jarno , Peter Maydell , Anthony Perard , qemu-ppc@nongnu.org, qemu-s390x@nongnu.org, Halil Pasic , Huacai Chen , xen-devel@lists.xenproject.org, Marcel Apfelbaum , David Gibson , qemu-arm@nongnu.org, Stefano Stabellini , Paolo Bonzini , kvm@vger.kernel.org, BALATON Zoltan , Leif Lindholm , Richard Henderson , Radoslaw Biernacki , Alistair Francis , Paul Durrant , Eduardo Habkost , "Michael S. Tsirkin" , Thomas Huth , Jiaxun Yang , =?utf-8?q?Herv=C3=A9_Poussineau?= , Greg Kurz , Christian Borntraeger , Cornelia Huck , "Edgar E. Iglesias" , David Hildenbrand , Mark Cave-Ayland , Aleksandar Rikalo , =?utf-8?q?Philippe_Mathie?= =?utf-8?q?u-Daud=C3=A9?= , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= Subject: [PATCH v2 11/11] softmmu/vl: Exit gracefully when accelerator is not supported Date: Fri, 19 Feb 2021 18:38:47 +0100 Message-Id: <20210219173847.2054123-12-philmd@redhat.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210219173847.2054123-1-philmd@redhat.com> References: <20210219173847.2054123-1-philmd@redhat.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Before configuring an accelerator, check it is valid for the current machine. Doing so we can return a simple error message instead of criptic one. Before: $ qemu-system-arm -M raspi2b -enable-kvm qemu-system-arm: /build/qemu-ETIdrs/qemu-4.2/exec.c:865: cpu_address_space_init: Assertion `asidx == 0 || !kvm_enabled()' failed. Aborted $ qemu-system-aarch64 -M xlnx-zcu102 -enable-kvm -smp 6 qemu-system-aarch64: kvm_init_vcpu: kvm_arch_init_vcpu failed (0): Invalid argument After: $ qemu-system-arm -M raspi2b -enable-kvm qemu-system-aarch64: invalid accelerator 'kvm' for machine raspi2b $ qemu-system-aarch64 -M xlnx-zcu102 -enable-kvm -smp 6 qemu-system-aarch64: -accel kvm: invalid accelerator 'kvm' for machine xlnx-zcu102 Signed-off-by: Philippe Mathieu-Daudé --- softmmu/vl.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/softmmu/vl.c b/softmmu/vl.c index b219ce1f357..f2c4074310b 100644 --- a/softmmu/vl.c +++ b/softmmu/vl.c @@ -2133,6 +2133,7 @@ static int do_configure_accelerator(void *opaque, QemuOpts *opts, Error **errp) const char *acc = qemu_opt_get(opts, "accel"); AccelClass *ac = accel_find(acc); AccelState *accel; + MachineClass *mc; int ret; bool qtest_with_kvm; @@ -2145,6 +2146,12 @@ static int do_configure_accelerator(void *opaque, QemuOpts *opts, Error **errp) } return 0; } + mc = MACHINE_GET_CLASS(current_machine); + if (!qtest_chrdev && !machine_class_valid_for_accelerator(mc, ac->name)) { + *p_init_failed = true; + error_report("invalid accelerator '%s' for machine %s", acc, mc->name); + return 0; + } accel = ACCEL(object_new_with_class(OBJECT_CLASS(ac))); object_apply_compat_props(OBJECT(accel)); qemu_opt_foreach(opts, accelerator_set_property,