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Up until a while ago, libvirt would automatically add a legacy PCI controllers combo (dmi-to-pci-bridge + pci-bridge) to any PCIe machine type (x86_64/q35 and aarch64/virt). As a result, a number of input and output files in the test suite ended up containing the legacy PCI controllers, even though they are not needed or in any way relevant to the feature being tested. Get rid of most of the occurrences. Most of the time, this just means removing the controllers from the input file and regenerating the output files; in a few instances, some minor tweaking is performed on the input file, most notably removing the memory balloon: as memory balloon support was not the scope of the test being changed, there is no loss of test coverage from doing so. Several occurrences of the legacy PCI controllers remain in the test suite, both because removing their usage would have required even more tweaking, and because we still want to have coverage of this perfectly valid combination.
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>