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f81b33b50c
Two reasons: 1.in none hotplug, we will pass it. We can see from libvirt function qemuBuildVhostuserCommandLine 2.qemu will use this vetcor num to init msix table. If we don't pass, qemu will use default value, this will cause VM can only use default value interrupts at most. Signed-off-by: gaohaifeng <gaohaifeng.gao@huawei.com>
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>