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pci_bridge: use parent bus's address space

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The switch to the new memory API caused the following problem:

The pci device may call pci_register_bar() to use PCI bus's address
space.  But we don't init PCI bus's address space if it is not bus
0.  A crash was reported:
http://lists.gnu.org/archive/html/qemu-devel/2011-08/msg02243.html

More work will be needed to make bridge filtering work correctly
with the memory API.

Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Wen Congyang 2011-08-26 13:00:33 +03:00 committed by Michael S. Tsirkin
parent a92eb87a44
commit 778d179939
1 changed files with 3 additions and 0 deletions
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3
hw/pci_bridge.c
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@ -246,6 +246,9 @@ int pci_bridge_initfn(PCIDevice *dev)
br->bus_name); br->bus_name);
sec_bus->parent_dev = dev; sec_bus->parent_dev = dev;
sec_bus->map_irq = br->map_irq; sec_bus->map_irq = br->map_irq;
/* TODO: use memory API to perform memory filtering. */
sec_bus->address_space_mem = parent->address_space_mem;
sec_bus->address_space_io = parent->address_space_io;
QLIST_INIT(&sec_bus->child); QLIST_INIT(&sec_bus->child);
QLIST_INSERT_HEAD(&parent->child, sec_bus, sibling); QLIST_INSERT_HEAD(&parent->child, sec_bus, sibling);