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[Qemu-devel] [RFC v8.1 07/13] vfio: add check for vfio devices which ena


From: Chen Fan
Subject: [Qemu-devel] [RFC v8.1 07/13] vfio: add check for vfio devices which enable aer should support bus reset
Date: Wed, 27 May 2015 10:46:28 +0800

Signed-off-by: Chen Fan <address@hidden>
---
 hw/vfio/pci.c | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index 5934fd7..91ad9ad 100644
--- a/hw/vfio/pci.c
+++ b/hw/vfio/pci.c
@@ -3801,6 +3801,33 @@ out:
     g_free(info);
 }
 
+static void vfio_pci_machine_done_notify(Notifier *notifier, void *unused)
+{
+    VFIOGroup *group;
+    VFIODevice *vbasedev;
+    VFIOPCIDevice *vdev;
+
+    /* Check All support AER devices if has bus reset capability */
+    QLIST_FOREACH(group, &vfio_group_list, next) {
+        QLIST_FOREACH(vbasedev, &group->device_list, next) {
+            vdev = container_of(vbasedev, VFIOPCIDevice, vbasedev);
+            if (vdev->features & VFIO_FEATURE_ENABLE_AER) {
+                vfio_check_host_bus_reset(vdev);
+                if (!vdev->has_bus_reset) {
+                    error_report("vfio: Cannot enable AER for device %s, "
+                                 "which is not support host bus reset.",
+                                 vdev->vbasedev.name);
+                    exit(1);
+                }
+            }
+        }
+    }
+}
+
+static Notifier machine_notifier = {
+    .notify = vfio_pci_machine_done_notify,
+};
+
 static int vfio_initfn(PCIDevice *pdev)
 {
     VFIOPCIDevice *vdev = DO_UPCAST(VFIOPCIDevice, pdev, pdev);
@@ -4086,6 +4113,11 @@ static const TypeInfo vfio_pci_dev_info = {
 static void register_vfio_pci_dev_type(void)
 {
     type_register_static(&vfio_pci_dev_info);
+    /*
+     * Register notifier when machine init is done, since we need
+     * check the configration manner after all vfio devices are inited.
+     */
+    qemu_add_machine_init_done_notifier(&machine_notifier);
 }
 
 type_init(register_vfio_pci_dev_type)
-- 
1.9.3




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