At 08/22/2011 03:01 AM, Marc-André Lureau Write:
> ---
>  src/qemu/qemu_command.c |   10 +++++++++-
>  1 files changed, 9 insertions(+), 1 deletions(-)
> 
> diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
> index 9ea4b7c..d25f34f 100644
> --- a/src/qemu/qemu_command.c
> +++ b/src/qemu/qemu_command.c
> @@ -1093,6 +1093,7 @@ qemuAssignDevicePCISlots(virDomainDefPtr def, 
> qemuDomainPCIAddressSetPtr addrs)
>  {
>      int i;
>      bool reservedIDE = false;
> +    bool reservedUSB = false;
>      bool reservedVGA = false;
>  
>      /* Host bridge */
> @@ -1123,13 +1124,20 @@ qemuAssignDevicePCISlots(virDomainDefPtr def, 
> qemuDomainPCIAddressSetPtr addrs)
>                  def->controllers[i]->info.addr.pci.slot = 1;
>                  def->controllers[i]->info.addr.pci.function = 1;
>              }
> +        } else if (def->controllers[i]->type == 
> VIR_DOMAIN_CONTROLLER_TYPE_USB &&
> +                   def->controllers[i]->idx == 0 &&
> +                   def->controllers[i]->info.type == 
> VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI &&
> +                   def->controllers[i]->info.addr.pci.domain == 0 &&
> +                   def->controllers[i]->info.addr.pci.bus == 0 &&
> +                   def->controllers[i]->info.addr.pci.slot == 1) {
> +            reservedUSB = true;

The first use controller's address is 0:0:1:2, you don't check the function 
value here.
I think the code should be like IDE's code:
if the type is not VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI:
    init def->controllers[i]->info
else
    check the pci address, if the address is wrong, report a error

Thanks
Wen Congyang
>          }
>      }
>  
>      /* PIIX3 (ISA bridge, IDE controller, something else unknown, USB 
> controller)
>       * hardcoded slot=1, multifunction device
>       */
> -    if (!reservedIDE &&
> +    if (!reservedIDE && !reservedUSB &&
>          qemuDomainPCIAddressReserveSlot(addrs, 1) < 0)
>          goto error;
>  


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