qemu already almost supports PCI domains; that is, several entirely
independent PCI host bridges on the same machine. However, a bug in
pci_bus_new_inplace() means that every host bridge gets assigned domain
number zero and so can't be properly distinguished. This patch fixes the
bug, giving each new host bridge a new domain number.
Signed-off-by: David Gibson <da...@gibson.dropbear.id.au>
---
hw/pci.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/hw/pci.c b/hw/pci.c
index 36db58b..2b4aecb 100644
--- a/hw/pci.c
+++ b/hw/pci.c
@@ -262,6 +262,8 @@ int pci_find_domain(const PCIBus *bus)
return -1;
}
+static int pci_next_domain; /* = 0 */
+
void pci_bus_new_inplace(PCIBus *bus, DeviceState *parent,
const char *name,
MemoryRegion *address_space,
@@ -274,7 +276,8 @@ void pci_bus_new_inplace(PCIBus *bus, DeviceState *parent,
/* host bridge */
QLIST_INIT(&bus->child);
- pci_host_bus_register(0, bus); /* for now only pci domain 0 is supported */
+
+ pci_host_bus_register(pci_next_domain++, bus);
vmstate_register(NULL, -1, &vmstate_pcibus, bus);
}
--
1.7.5.4
