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由 Laine Stump 提交于
There is an existing virDomainPCIAddressReserveNextSlot() which will reserve all functions of the next available PCI slot. One place in the qemu PCI address assignment code requires reserving a *single* function of the next available PCI slot. This patch modifies and renames virDomainPCIAddressReserveNextSlot() so that it can fulfill both the original purpose and the need to reserve a single function. (This is being done so that the abovementioned code in qemu can have its "kind of open coded" solution replaced with a call to this new function).
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