pci: allow devices being tagged as not hotpluggable.

This patch adds a field to PCIDeviceInfo to tag devices as being
not hotpluggable.  Any attempt to plug-in or -out such a device
will throw an error.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/hw/pci.c b/hw/pci.c
index d0b51b8..8d0e3df 100644
--- a/hw/pci.c
+++ b/hw/pci.c
@@ -1624,6 +1624,11 @@ static int pci_qdev_init(DeviceState *qdev, DeviceInfo *base)
                                      info->is_bridge);
     if (pci_dev == NULL)
         return -1;
+    if (qdev->hotplugged && info->no_hotplug) {
+        qerror_report(QERR_DEVICE_NO_HOTPLUG, info->qdev.name);
+        do_pci_unregister_device(pci_dev);
+        return -1;
+    }
     rc = info->init(pci_dev);
     if (rc != 0) {
         do_pci_unregister_device(pci_dev);
@@ -1656,7 +1661,12 @@ static int pci_qdev_init(DeviceState *qdev, DeviceInfo *base)
 static int pci_unplug_device(DeviceState *qdev)
 {
     PCIDevice *dev = DO_UPCAST(PCIDevice, qdev, qdev);
+    PCIDeviceInfo *info = container_of(qdev->info, PCIDeviceInfo, qdev);
 
+    if (info->no_hotplug) {
+        qerror_report(QERR_DEVICE_NO_HOTPLUG, info->qdev.name);
+        return -1;
+    }
     return dev->bus->hotplug(dev->bus->hotplug_qdev, dev,
                              PCI_HOTPLUG_DISABLED);
 }