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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).
LibVirt : simple API for virtualization
Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). It is free software
available under the GNU Lesser General Public License. Virtualization of
the Linux Operating System means the ability to run multiple instances of
Operating Systems concurrently on a single hardware system where the basic
resources are driven by a Linux instance. The library aim at providing
long term stable C API initially for the Xen paravirtualization but
should be able to integrate other virtualization mechanisms if needed.
Daniel Veillard <veillard@redhat.com>