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Guest CPU definitions with mode='custom' and missing <vendor> are expected to run on a host CPU from any vendor as long as the required CPU model can be used as a guest CPU on the host. But even though no CPU vendor was explicitly requested we would sometimes force it due to a bug in virCPUUpdate and virCPUTranslate. The bug would effectively forbid cross vendor migrations even if they were previously working just fine. Signed-off-by: Jiri Denemark <jdenemar@redhat.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>
Description
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.
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