[Qemu-devel] [PATCH 08/12] vfio: add check aer functionality for hotplug device

[Zhou Jie <zhoujie2011@cn.fujitsu.com>]

From: Chen Fan <chen.fan.fnst@cn.fujitsu.com>

when function 0 is hot-added, we can check the vfio device
whether support hot bus reset.

Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
---
 hw/vfio/pci.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index 832f25e..109b11b 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -3087,6 +3087,19 @@ post_reset:
     vfio_pci_post_reset(vdev);
 }
 
+static void vfio_pci_is_valid(PCIDevice *dev, Error **errp)
+{
+    VFIOPCIDevice *vdev = DO_UPCAST(VFIOPCIDevice, pdev, dev);
+    Error *local_err = NULL;
+
+    if (vdev->features & VFIO_FEATURE_ENABLE_AER) {
+        vfio_check_hot_bus_reset(vdev, &local_err);
+        if (local_err) {
+            error_propagate(errp, local_err);
+        }
+    }
+}
+
 static void vfio_instance_init(Object *obj)
 {
     PCIDevice *pci_dev = PCI_DEVICE(obj);
@@ -3141,6 +3154,7 @@ static void vfio_pci_dev_class_init(ObjectClass *klass, void *data)
     set_bit(DEVICE_CATEGORY_MISC, dc->categories);
     pdc->init = vfio_initfn;
     pdc->exit = vfio_exitfn;
+    pdc->is_valid_func = vfio_pci_is_valid;
     pdc->config_read = vfio_pci_read_config;
     pdc->config_write = vfio_pci_write_config;
     pdc->is_express = 1; /* We might be */
-- 
1.8.3.1