Merge remote-tracking branch 'mst/for_anthony' into staging

1 files changed, 9 insertions, 9 deletions

diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c
index 316bf92db0..f3b3293db0 100644
--- a/hw/virtio-pci.c
+++ b/hw/virtio-pci.c
@@ -27,6 +27,7 @@
 #include "kvm.h"
 #include "blockdev.h"
 #include "virtio-pci.h"
+#include "range.h"
 
 /* from Linux's linux/virtio_pci.h */
 
@@ -516,17 +517,16 @@ static void virtio_write_config(PCIDevice *pci_dev, uint32_t address,
 {
     VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
 
-    if (PCI_COMMAND == address) {
-        if (!(val & PCI_COMMAND_MASTER)) {
-            if (!(proxy->flags & VIRTIO_PCI_FLAG_BUS_MASTER_BUG)) {
-                virtio_pci_stop_ioeventfd(proxy);
-                virtio_set_status(proxy->vdev,
-                                  proxy->vdev->status & ~VIRTIO_CONFIG_S_DRIVER_OK);
-            }
-        }
+    pci_default_write_config(pci_dev, address, val, len);
+
+    if (range_covers_byte(address, len, PCI_COMMAND) &&
+        !(pci_dev->config[PCI_COMMAND] & PCI_COMMAND_MASTER) &&
+        !(proxy->flags & VIRTIO_PCI_FLAG_BUS_MASTER_BUG)) {
+        virtio_pci_stop_ioeventfd(proxy);
+        virtio_set_status(proxy->vdev,
+                          proxy->vdev->status & ~VIRTIO_CONFIG_S_DRIVER_OK);
     }
 
-    pci_default_write_config(pci_dev, address, val, len);
     msix_write_config(pci_dev, address, val, len);
 }