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Libvirt provides a portable, long term stable C API for managing the
virtualization technologies provided by many operating systems. It
includes support for QEMU, KVM, Xen, LXC, bhyve, Virtuozzo, VMware
vCenter and ESX, VMware Desktop, Hyper-V, VirtualBox and the POWER
Hypervisor.
f310b25341
We already use the '-nodefaults' command line arg with QEMU to stop it adding any default devices to guests. Unfortunately, QEMU will load global config files from /etc/qemu that may also add default devices. These aren't blocked by '-nodefaults', so we need to also add the '-nodefconfig' arg to prevent that. Unfortunately these global config files are also used to define custom CPU models. So in blocking global hardware device addition we also block definitions of new CPU models. Libvirt doesn't know about these custom CPU models though, so it would never make use of them anyway. Thus blocking them via -nodefconfig isn't a show stopping problem. We would need to expand libvirt's own CPU model XML database to support these instead. * src/qemu/qemu_conf.c: Add '-nodefconfig' if available * tests/qemuxml2argvdata/: Add '-nodefconfig' to all data files which have '-nodefaults' present |
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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>