From: Marcelo Tosatti <[EMAIL PROTECTED]>
Otherwise the PCI size for such regions will be calculated erroneously.
Signed-off-by: Marcelo Tosatti <[EMAIL PROTECTED]>
Cc: Anthony Liguori <[EMAIL PROTECTED]>
Signed-off-by: Avi Kivity <[EMAIL PROTECTED]>
diff --git a/qemu/hw/virtio.c b/qemu/hw/virtio.c
index 634f869..9100bb1 100644
--- a/qemu/hw/virtio.c
+++ b/qemu/hw/virtio.c
@@ -404,6 +404,7 @@ VirtIODevice *virtio_init_pci(PCIBus *bus, const char *name,
VirtIODevice *vdev;
PCIDevice *pci_dev;
uint8_t *config;
+ uint32_t size;
pci_dev = pci_register_device(bus, name, struct_size,
-1, NULL, NULL);
@@ -441,7 +442,11 @@ VirtIODevice *virtio_init_pci(PCIBus *bus, const char
*name,
else
vdev->config = NULL;
- pci_register_io_region(pci_dev, 0, 20 + config_size, PCI_ADDRESS_SPACE_IO,
+ size = 20 + config_size;
+ if (size & (size-1))
+ size = 1 << fls(size);
+
+ pci_register_io_region(pci_dev, 0, size, PCI_ADDRESS_SPACE_IO,
virtio_map);
qemu_register_reset(virtio_reset, vdev);
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