[PATCH] device-assignment: Register as un-migratable

Alex Williamson
2010-11-15T19:41:47Z

Use register_device_unmigratable() to declare ourselves as
non-migratable.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
---

hw/device-assignment.c | 15 +++++++++++++++
1 files changed, 15 insertions(+), 0 deletions(-)

diff --git a/hw/device-assignment.c b/hw/device-assignment.c
index bde231d..cd93941 100644
--- a/hw/device-assignment.c
+++ b/hw/device-assignment.c
@@ -1434,6 +1434,13 @@ static void assigned_dev_unregister_msix_mmio(AssignedDevice *dev)
dev->msix_table_page = NULL;
}

+/* This should never get called, but we're required to create a save_state
+ * handler or else the no_migrate flag will never be checked. */
+static void assigned_save(QEMUFile* f, void *opaque)
+{
+ abort();
+}
+
static int assigned_initfn(struct PCIDevice *pci_dev)
{
AssignedDevice *dev = DO_UPCAST(AssignedDevice, dev, pci_dev);
@@ -1490,6 +1497,13 @@ static int assigned_initfn(struct PCIDevice *pci_dev)

assigned_dev_load_option_rom(dev);
QLIST_INSERT_HEAD(&devs, dev, next);
+
+ /* Assigned devices are not migratable, register a save
+ * state entry so that we can mark it unmigratable. */
+ register_savevm(&dev->dev.qdev, "pci-assign", 0, 0,
+ assigned_save, NULL, dev);
+ register_device_unmigratable(&dev->dev.qdev, "pci-assign", dev);
+
return 0;

assigned_out:
@@ -1503,6 +1517,7 @@ static int assigned_exitfn(struct PCIDevice *pci_dev)
{
AssignedDevice *dev = DO_UPCAST(AssignedDevice, dev, pci_dev);

+ unregister_savevm(&dev->dev.qdev, "pci-assign", dev);
QLIST_REMOVE(dev, next);
deassign_device(dev);
free_assigned_device(dev);