Patchwork [2/2] pci: Restore bus-master memory mapping state after migration

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Submitter Hans de Goede
Date Nov. 8, 2012, 11:54 a.m.
Message ID <1352375667-5077-2-git-send-email-hdegoede@redhat.com>
Download mbox | patch
Permalink /patch/197827/
State New
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Hans de Goede - Nov. 8, 2012, 11:54 a.m.
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(+)

Patch

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;
 }