在 2013-01-03四的 16:13 +0100，Ján Tomko写道：
> On 12/26/12 02:00, liguang wrote:
> > @@ -1801,10 +1803,13 @@ qemuBuildDeviceAddressStr(virBufferPtr buf,
> > * When QEMU grows support for > 1 PCI domain, then pci.0 change
> > * to pciNN.0 where NN is the domain number
> > */
> > - if (qemuCapsGet(caps, QEMU_CAPS_PCI_MULTIBUS))
> > + if (info->type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCIBRIDGE) {
> > + virBufferAsprintf(buf, ",bus=pci-bridge%d", info->addr.pci.bus);
> > + } else if (qemuCapsGet(caps, QEMU_CAPS_PCI_MULTIBUS)) {
> > virBufferAsprintf(buf, ",bus=pci.0");
>
> Is there any way (or plan) to use more pci buses with QEMU other than
> with the pci bridges? If not, we could just name the bridges pci.%d. (If
> we index the bridges from 1).
as far as I know, qemu can't use multi-pci-bus,
so only pci.0 accepted now.
>
> > - else
> > + } else {
> > virBufferAsprintf(buf, ",bus=pci");
> > + }
> > if (info->addr.pci.multi == VIR_DEVICE_ADDRESS_PCI_MULTI_ON)
> > virBufferAddLit(buf, ",multifunction=on");
> > else if (info->addr.pci.multi == VIR_DEVICE_ADDRESS_PCI_MULTI_OFF)
> > @@ -3455,6 +3460,32 @@ error:
> > return NULL;
> > }
>
>
> >
> > +char *
> > +qemuBuildPCIbridgeDevStr(virDomainPCIbridgeDefPtr dev,
> > + qemuCapsPtr caps, int idx)
> > +{
> > + virBuffer buf = VIR_BUFFER_INITIALIZER;
> > +
> > + virBufferAsprintf(&buf, "pci-bridge,chassis_nr=1");
>
> The chassis number has to be unique for each bridge.
chassis number is not so important,
here, I just set all bridges in same chassis.
>
> > +
> > + if ((dev->type != VIR_DOMAIN_PCIBRIDGE_TYPE_ROOT) &&
> > + (qemuBuildDeviceAddressStr(&buf, &dev->info, caps) < 0))
> > + goto error;
> > + else
> > + virBufferAsprintf(&buf, ",id=pci-bridge%d" , idx);
> > +
> > + if (virBufferError(&buf)) {
> > + virReportOOMError();
> > + goto error;
> > + }
> > +
> > + return virBufferContentAndReset(&buf);
> > +
> > +error:
> > + virBufferFreeAndReset(&buf);
> > + return NULL;
> > +
> > +}
>
--
regards!
li guang
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