[Qemu-devel] [PATCH 2/2] pci: Restore bus-master memory mapping state after migration

[Hans de Goede <hdegoede@redhat.com>]

This fixes dma reads / writes from pci-devices no longer working after
migration.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 hw/pci.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/hw/pci.c b/hw/pci.c
index dceda0b..6666651 100644
--- a/hw/pci.c
+++ b/hw/pci.c
@@ -367,6 +367,10 @@ static int get_pci_config_device(QEMUFile *f, void *pv, size_t size)
 
     pci_update_mappings(s);
 
+    memory_region_set_enabled(&s->bus_master_enable_region,
+                              pci_get_word(s->config + PCI_COMMAND)
+                                & PCI_COMMAND_MASTER);
+
     g_free(config);
     return 0;
 }
-- 
1.7.12.1