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8f578716c7
Prior to this, <address type='pci'/> wasn't allowed when parsing (domain+bus+slot+function needed to be a "valid" PCI address, meaning that at least one of domain/bus/slot had to be non-0), the RNG required bus to be specified, and if type was set to PCI when formatting, domain+bus+slot+function would always be output. This makes all the address attributes optional during parse and RNG validation, and suppresses domain+bus+slot+function if domain+bus+slot are all 0 (NB: if d+b+s are all 0, any value for function is nonsensical as that will never happen in the real world, and after the next patch we will always assign a real working address to any empty PCI address before it is ever output to anywhere). Note that explicitly setting all attributes to 0 is equivalent to setting none of them, which is okay, since 0000:00:00 is reserved in any PCI bus setup, and can't be used anyway.
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>