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qemu: Fix auto-adding PCI bridge when all slots are reserved
Commit 93c8ca tried to fix the issue with auto-adding of a PCI bridge controller, but didn't work properly in all scenarios. This patch provides a better fix of the issue when all slots on a PCI bus are reserved by devices with user specified addresses and no additional bridges need to be created. Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1132900
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@ -1910,6 +1910,8 @@ qemuDomainAssignPCIAddresses(virDomainDefPtr def,
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int nbuses = 0;
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size_t i;
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int rv;
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bool buses_reserved = true;
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virDomainPCIConnectFlags flags = VIR_PCI_CONNECT_TYPE_PCI;
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for (i = 0; i < def->ncontrollers; i++) {
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@ -1932,17 +1934,20 @@ qemuDomainAssignPCIAddresses(virDomainDefPtr def,
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if (qemuValidateDevicePCISlotsChipsets(def, qemuCaps, addrs) < 0)
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goto cleanup;
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if (qemuAssignDevicePCISlots(def, addrs) < 0)
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for (i = 0; i < addrs->nbuses; i++) {
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if (!qemuDomainPCIBusFullyReserved(&addrs->buses[i]))
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buses_reserved = false;
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}
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/* Reserve 1 extra slot for a (potential) bridge only if buses
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* are not fully reserved yet
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*/
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if (!buses_reserved &&
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virDomainPCIAddressReserveNextSlot(addrs, &info, flags) < 0)
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goto cleanup;
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for (i = 0; i < addrs->nbuses; i++) {
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if (!qemuDomainPCIBusFullyReserved(&addrs->buses[i])) {
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/* Reserve 1 extra slot for a (potential) bridge */
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if (virDomainPCIAddressReserveNextSlot(addrs, &info, flags) < 0)
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goto cleanup;
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}
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}
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if (qemuAssignDevicePCISlots(def, addrs) < 0)
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goto cleanup;
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for (i = 1; i < addrs->nbuses; i++) {
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virDomainPCIAddressBusPtr bus = &addrs->buses[i];
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