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If 'last_processed_hostdev_vf != -1' is false then, since the loop counter 'i' starts at 0, 'i <= last_processed_hostdev_vf' can't possibly be true and the loop body will never be executed. However, since 'i' is unsigned and 'last_processed_hostdev_vf' is signed, we can't just get rid of the check completely; what we can do is move it outside of the loop to avoid checking its value on every iteration and cluttering the actual loop condition.
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>