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Thu, 5 Oct 2023 11:16:55 -0700 Received: from xsjfnuv50.xilinx.com (10.180.168.240) by SATLEXMB03.amd.com (10.181.40.144) with Microsoft SMTP Server id 15.1.2507.27 via Frontend Transport; Thu, 5 Oct 2023 13:16:54 -0500 From: Vikram Garhwal To: CC: , Juergen Gross , Vikram Garhwal , Anthony Perard , "Paul Durrant" , "Michael S. Tsirkin" , "Marcel Apfelbaum" , Paolo Bonzini , Richard Henderson , Eduardo Habkost , "open list:X86 Xen CPUs" Subject: [QEMU][PATCH v1 1/7] xen: when unplugging emulated devices skip virtio devices Date: Thu, 5 Oct 2023 11:16:23 -0700 Message-ID: <20231005181629.4046-2-vikram.garhwal@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20231005181629.4046-1-vikram.garhwal@amd.com> References: <20231005181629.4046-1-vikram.garhwal@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL6PEPF0001AB4A:EE_|CH0PR12MB5266:EE_ X-MS-Office365-Filtering-Correlation-Id: e88332cb-0256-4a72-3e1e-08dbc5cf4553 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17; CTRY:US; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:SATLEXMB03.amd.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(13230031)(4636009)(376002)(136003)(39860400002)(346002)(396003)(230922051799003)(82310400011)(1800799009)(451199024)(64100799003)(186009)(40470700004)(36840700001)(46966006)(7416002)(44832011)(5660300002)(8676002)(2906002)(4326008)(8936002)(41300700001)(70206006)(70586007)(316002)(6916009)(40460700003)(54906003)(36860700001)(40480700001)(26005)(336012)(426003)(36756003)(6666004)(1076003)(2616005)(86362001)(356005)(81166007)(82740400003)(83380400001)(47076005)(478600001)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Oct 2023 18:17:01.4573 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: e88332cb-0256-4a72-3e1e-08dbc5cf4553 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL6PEPF0001AB4A.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR12MB5266 Received-SPF: softfail client-ip=40.107.92.58; envelope-from=vikram.garhwal@amd.com; helo=NAM10-BN7-obe.outbound.protection.outlook.com X-Spam_score_int: -25 X-Spam_score: -2.6 X-Spam_bar: -- X-Spam_report: (-2.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.493, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Juergen Gross Virtio devices should never be unplugged at boot time, as they are similar to pci passthrough devices. Signed-off-by: Juergen Gross Signed-off-by: Vikram Garhwal --- hw/i386/xen/xen_platform.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/hw/i386/xen/xen_platform.c b/hw/i386/xen/xen_platform.c index 17457ff3de..3560eaf8c8 100644 --- a/hw/i386/xen/xen_platform.c +++ b/hw/i386/xen/xen_platform.c @@ -28,6 +28,7 @@ #include "hw/ide/pci.h" #include "hw/pci/pci.h" #include "migration/vmstate.h" +#include "hw/virtio/virtio-bus.h" #include "net/net.h" #include "trace.h" #include "sysemu/xen.h" @@ -132,7 +133,8 @@ static void unplug_nic(PCIBus *b, PCIDevice *d, void *o) /* We have to ignore passthrough devices */ if (pci_get_word(d->config + PCI_CLASS_DEVICE) == PCI_CLASS_NETWORK_ETHERNET - && !pci_device_is_passthrough(d)) { + && !pci_device_is_passthrough(d) + && !qdev_get_child_bus(&d->qdev, TYPE_VIRTIO_BUS)) { object_unparent(OBJECT(d)); } } @@ -208,6 +210,10 @@ static void unplug_disks(PCIBus *b, PCIDevice *d, void *opaque) /* We have to ignore passthrough devices */ if (pci_device_is_passthrough(d)) return; + /* Ignore virtio devices */ + if (qdev_get_child_bus(&d->qdev, TYPE_VIRTIO_BUS)) { + return; + } switch (pci_get_word(d->config + PCI_CLASS_DEVICE)) { case PCI_CLASS_STORAGE_IDE: